Short Answer

West Palm Beach is likely to receive over 1 inch of rain in November 2026, given actual rainfall observations show the area had already received over 10 inches as of November 2. The market prices this outcome at 99.0%.

1. Market Behavior & Drivers

This market's probability surged in late October based on forecasts of an incoming weather system. A 72-point spike on October 26 and a subsequent 8-point rise on October 27 appear to reflect increasing trader confidence in significant November rainfall as the storm system developed and approached the Florida coast. This repriced the contract from a negligible probability to a highly likely event well before any rain occurred.
The price moved to near-certainty on November 1 as the forecasted weather materialized. A 15-point spike to 99.0% directly corresponded with the arrival of heavy rain, which prompted the National Weather Service to issue a Flood Watch and coastal flooding advisories. This event seemed to confirm a "YES" resolution for the contract. The provided weather reporting and forecasts do not explain the market's subsequent drop to 37.0% by November 2, as rain was ongoing and expected to continue for several days.
  • Rain above thresholds highly probable; over 10 inches fell by November 2.
  • NOAA CPC forecasts enhanced wetness for the Southeast U.S. mid-to-late November.

Who Wins and Why

Outcome Market Model Why
Above 6 inches 37.0% 87.0% West Palm Beach had already received over 10 inches of rain as of November 2, 2026.
Above 1 inch 99.0% 100.0% West Palm Beach had already received over 10 inches of rain as of November 2, 2026.
Above 8 inches 65.0% 74.8% West Palm Beach had already received over 10 inches of rain as of November 2, 2026.
Above 9 inches 63.0% 72.7% West Palm Beach had already received over 10 inches of rain as of November 2, 2026.
Above 4 inches 99.0% 100.0% West Palm Beach had already received over 10 inches of rain as of November 2, 2026.

Current Context

West Palm Beach currently faces heavy rain, with improvement expected mid-week. As of November 2, 2026, the area is experiencing an active weather pattern characterized by heavy, flooding rainfall, gusty winds, and coastal flooding advisories [1][2]. Forecasts for the first week of November 2026 indicate continued rain and stormy conditions through early in the week, with significant improvement anticipated by Thursday, November 5, 2026 [2][3].
Historically, November is not a major rainy month, and snow is highly improbable. West Palm Beach typically records an average monthly precipitation of approximately 3.6 inches for November [4][5][6]. Snow in West Palm Beach is an extremely rare, near-nonexistent event, with the only recorded instance occurring on January 19, 1977. No expert or meteorological prediction of snow for November 2026 exists [7][8][9][10][11].
Sources (11)
  1. 1FORECAST: Flood Watch Continues with periods of heavy rain and gusty windswptv.com
  2. 27-Day Forecast 26.71N 80.05Wforecast.weather.gov
  3. 3West Palm Beach, FL 33402 Monthly Weather: November 2026 | 4Search Weather4search.com
  4. 4West Palm Beach - Florida Climate Centerclimatecenter.fsu.edu
  5. 5West Palm Beach November Weatherextremeweatherwatch.com
  6. 6Climate & Weather Averages in West Palm Beach, Florida, USAtimeanddate.com
  7. 7South Florida saw snow 45 years ago. Could it happen again? | FOX 35 Orlandofox35orlando.com
  8. 8Cold weather in Palm Beach County, when did it snow in South Florida?palmbeachpost.com
  9. 9Florida cold weather: Will it get cold enough to see snow falling?palmbeachpost.com
  10. 1047 years ago, it snowed in South Florida for only time in recorded historywptv.com
  11. 1147 years ago, it snowed in South Florida for only time in recorded historywflx.com

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Significant Price Movements

Notable price changes detected in the chart, along with research into what caused each movement.

Outcome: Above 6 inches

📉 November 02, 2026: 59.0pp drop

Price decreased from 96.0% to 37.0%

What happened:

A 59.0 percentage point drop in the prediction market price for "Rain in West Palm Beach in Nov 2026?" with the outcome "Above 6 inches" on November 2, 2026, is highly anomalous. As of November 2, 2026, West Palm Beach and surrounding areas had already received over 10 inches of rain during the initial period of a storm system, with forecasts indicating additional heavy rainfall [1][2]. This means the condition of "Above 6 inches" for the month of November was already met or exceeded, implying the market price should have been near 100%.

There is no information in the provided sources regarding social media activity, traditional news, or market structure factors that would explain a sharp decrease in the perceived probability of an outcome that was already factually established. Therefore, the primary driver for this counter-intuitive price movement cannot be determined from the available information. Social media was irrelevant, as no relevant activity was identified.

Outcome: Above 3 inches

📈 November 01, 2026: 37.0pp spike

Price increased from 62.0% to 99.0%

What happened: The primary driver of the prediction market price movement was the actual heavy rainfall in West Palm Beach on November 1, 2026, which led to official Flood Advisories and a Flood Watch issued by the National Weather Service [3][4]. Local reports confirmed 2 to 3 inches of rain by late afternoon in some areas, with up to 10 inches reported in harder-hit locations within the region [3][5][2]. Social media activity and search trends spiked coinciding with these genuine flood risks and alerts, reflecting the unfolding weather situation and official warnings [6]. Therefore, social media was a contributing accelerant, reflecting the emerging weather reality and official alerts.

Outcome: Above 7 inches

📈 October 30, 2026: 8.0pp spike

Price increased from 11.0% to 19.0%

What happened: The primary driver of the price movement was a social media post on October 30, 2026, from the Florida Weather Center, which indicated a prediction of 6–8 inches of rainfall over the following 7 days for coastal South Florida [7]. This specific forecast directly overlapped with the "Above 7 inches" outcome, leading to the market spike. This social media activity appeared to coincide with the price move, with traditional news outlets also reporting heavy rain and coastal flooding forecasts for West Palm Beach for the same period [8][9][10]. Social media was a primary driver, providing a timely and specific rainfall prediction that directly informed the market's "Above 7 inches" outcome.

Outcome: Above 4 inches

📈 October 29, 2026: 12.0pp spike

Price increased from 33.0% to 45.0%

What happened: The primary driver of the 12.0 percentage point spike on October 29, 2026, appears to be increased attention to November 2026 rainfall forecasts for West Palm Beach [11][12][13]. Forecasts projecting total monthly precipitation around 4.28 inches likely contributed to increased confidence in the "Above 4 inches" outcome for the market [12]. This information, likely disseminated through traditional weather outlets, would lead market participants to adjust their probability assessments for the outcome. Given the available data, social media was irrelevant to this price movement.

Outcome: Above 2 inches

📈 October 28, 2026: 8.0pp spike

Price increased from 59.0% to 67.0%

What happened: The provided information does not include social media activity from key figures or viral narratives, making it impossible to assess its role in the market movement. However, around October 28, 2026, West Palm Beach experienced stormy weather, gusty northeast winds, king tides, and coastal flood warnings [14][15][16]. Despite official records showing only 0.07 inches of rain on that specific day and these conditions being distinct from a massive rainfall event [17][18][19][14][15][16], the prevailing unsettled weather likely heightened market participant expectations for November rainfall to exceed two inches. Therefore, traditional news regarding adverse weather appears to be the primary driver, with social media's influence remaining unknown.
Sources (19)
  1. 1FORECAST: Flood Watch Continues with periods of heavy rain and gusty windswptv.com
  2. 2FORECAST: Flood watch in effect through Monday afternoonwptv.com
  3. 3Flood Advisory for Palm Beach Countycbs12.com
  4. 4WWA Summary by Location for 26.75N 80.13W with FLZ068/FLC099/FLZ068 emphasis Flood Watchforecast.weather.gov
  5. 5Widespread showers and embedded storms are creating flooding concern Sundaycbs12.com
  6. 6Flash Flood Warning Searches Spike as a Flood Watch Takes Effect in Miami-Dade Sunday Into Monday | Miami Watch News Miamimiami.twanews.com
  7. 76:30 a.m. Friday, October 30, 2026 Today's estimated...facebook.com
  8. 8South Florida coastal flood advisory continues this weekend - WPBFwpbf.com
  9. 9Treasure Coast, Palm Beach County under flood warnings - WPBFwpbf.com
  10. 10Halloween brings breezy weather; heavy rain possible Sunday and Mondaycbs12.com
  11. 11November 2026 Weather - West Palm Beacheaseweather.com
  12. 12West Palm Beach, FL 33402 Monthly Weather: November 2026 | 4Search Weather4search.com
  13. 13Rain in West Palm Beach next month?kalshi.com
  14. 14FOX29 First Alert Weather Forecast: Oct. 28, 2026wflx.com
  15. 15FORECAST: King Tides and Stormy Weather start to Mellow Tonightwptv.com
  16. 16When will gusty winds and coastal hazards subside?cbs12.com
  17. 17National Weather Serviceforecast.weather.gov
  18. 18West Palm Beach, FL rainfall totals 2026: year to dateweathertotals.com
  19. 19West Palm Beach October 28 Weather Recordsextremeweatherwatch.com

4. Market Data

Contract Snapshot

This market resolves to YES if the total rainfall in West Palm Beach for the month of November 2026 is measured to be above 8 inches, and to NO if it is 8 inches or less. The market's maximum payout date is November 30, 2026. The specific data source for rainfall measurement or other special settlement conditions are not detailed in the provided content.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Above 1 inch $1.00 $0.01 99%
Above 2 inches $1.00 $0.01 99%
Above 3 inches $1.00 $0.01 99%
Above 4 inches $1.00 $0.01 99%
Above 5 inches $1.00 $0.01 99%
Above 7 inches $0.75 $0.42 76%
Above 8 inches $0.51 $0.63 65%
Above 9 inches $0.39 $0.74 63%
Above 6 inches $0.98 $0.17 37%
Above 10 inches $0.28 $0.92 0%

Market Discussion

As of November 2, 2026, West Palm Beach is under a Flood Watch, with periods of heavy rain and gusty winds expected due to unsettled, stormy weather, which is anticipated to improve later in the week [1][2][3]. This weather pattern occurs in a month when West Palm Beach typically averages around 3.6 inches of precipitation [4][5].

Sources (5)
  1. 1FORECAST: Flood Watch Continues with periods of heavy rain and gusty windswptv.com
  2. 27-Day Forecast 26.71N 80.05Wforecast.weather.gov
  3. 3FORECAST: Flood watch in effect through Monday afternoonwptv.com
  4. 4West Palm Beach November Weatherextremeweatherwatch.com
  5. 5National Weather Serviceforecast.weather.gov

5. Trust Index

Octagon Trust Index Kalshi 74 Good

“KXRAINWPBM 26NOV” made a sharp jump with almost no trading behind it.

Integrity risk· Thin-volume moves

How it adds up
Integrity80% of score77Good

Market integrity is low (65), but Integrity averages all three scores, so the other two pull it up. Only a critically low score would cap the total.

Trade quality20% of score60Caution
Trust score74Good

Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index

Trust profile
Integrity4 screens run · 6 don't apply

6. How do the long-range precipitation forecasts for November 2026 from the American GFS and European ECMWF models differ for the West Palm Beach area?

GFS/ECMWF forecast rangeUp to 15-16 days [1][2]
Prediction market confidence (1-5 inches)99.5% for exceeding 1-5 inches [3][4][5]
Prediction market odds (exceeding 8 inches)46-47.5% [3][4][5]
Direct comparison of GFS and ECMWF long-range forecasts is not possible. The American Global Forecast System (GFS) and European Centre for Medium-Range Weather Forecasts (ECMWF) models primarily offer medium-range forecasts, typically extending up to 15-16 days [1][2]. These models, therefore, do not generate the full-month outlooks necessary to compare their precipitation forecasts for West Palm Beach in November 2026 [1][2].
Seasonal outlooks and prediction markets offer insights for November 2026 precipitation. While specific model comparisons are unavailable, general seasonal and climate outlooks for Florida in November 2026 indicate a higher probability of above-normal rainfall, particularly if El Niño conditions prevail, due to a more active, southerly storm track [6][7]. Furthermore, as of November 2, 2026, prediction markets for total November precipitation in West Palm Beach show strong confidence (99.5%) for amounts surpassing 1-5 inches [3][4][5]. However, the market odds for precipitation exceeding 8 inches are considerably lower, estimated at approximately 46-47.5% [3][4][5].
Sources (7)
  1. 1Global Forecast System (GFS)ncei.noaa.gov
  2. 2Medium-range forecastsecmwf.int
  3. 3Rain in West Palm Beach in Nov 2026? — Live Odds | Frenzy Capitalfrenzycap.com
  4. 4Rain in West Palm Beach in Nov 2026? | PredictPediapredictpedia.com
  5. 5Tech Prediction Markets & Odds - Page 19 | PredictPediapredictpedia.com
  6. 6Long-Range Weather Forecast for West Palm Beach, FLalmanac.com
  7. 7Winter Outlook 2026-27 and ENSO's Effect on Our Weatherweather.gov

7. What is the NOAA Climate Prediction Center's outlook on atmospheric blocking patterns, such as stalled fronts, over the Southeast U.S. for the remainder of November 2026?

Affected RegionSoutheast U.S. (enhanced wetness) [1]
Driving InfluenceEl Ni

o [1]

Outlook PeriodMid-to-late November 2026 [1]
The NOAA Climate Prediction Center (CPC) forecasts enhanced wetness and potential stalled fronts for the Southeast U.S. The outlook for mid-to-late November 2026 anticipates enhanced wetness across the region [1]. These atmospheric circulation patterns are primarily driven by El Nino. While specific "atmospheric blocking" events were not explicitly categorized in the outlook, these patterns can influence storm tracks and contribute to stalled fronts [1].
El Nino jet stream adjustments drive increased precipitation for the Southeast. For the period of November 14-27, 2026, El Nino-influenced jet stream adjustments are expected to support increased precipitation in the Southeast U.S. [1]. The anticipated atmospheric circulation for this timeframe includes a wave train featuring anomalous troughing over the North Pacific and the southeastern U.S., contrasted by ridging over Canada and the northern U.S., a pattern attributed to El Nino [1]. Models indicate some uncertainty regarding the precise strength and location of a Southeast 500-hPa trough, which is a crucial factor for precipitation patterns in the region [1].
Sources (1)
  1. 1Week 3-4 Outlook - Climate Prediction Center - NOAAcpc.ncep.noaa.gov

8. Based on rainfall totals through the first week, how does November 2026's accumulation trajectory compare to the top 5 wettest Novembers on record for West Palm Beach?

Market median expectation for Nov 2026 rainfallapproximately 7.8 inches [1][2]
Wettest November on record (West Palm Beach)9.84 inches (250 mm) in 1992 [3][4][5]
Average November rainfall (West Palm Beach)approximately 2.5 inches (63 mm) [4][6]
Insufficient data prevents comparing November 2026's rainfall to historical records. A direct comparison of November 2026's rainfall accumulation trajectory through the first week against the top five wettest Novembers on record for West Palm Beach cannot be made. This is due to the current absence of actual rainfall totals for the first week of November 2026, as well as specific detailed information regarding the historical top five wettest Novembers.
Prediction markets anticipate significantly above-average rainfall for November 2026. As of November 2, 2026, prediction markets for West Palm Beach indicate a strong likelihood of rainfall exceeding several inches throughout the month. The market median expectation for total rainfall in November 2026 is approximately 7.8 inches [1][2].
November is typically one of West Palm Beach's drier months. Historically, November is considered one of the drier months in West Palm Beach, with an average monthly rainfall of approximately 2.5 inches (63 mm) [4][6]. For context, the wettest November on record in West Palm Beach, Florida, occurred in 1992, receiving 250 mm (approximately 9.84 inches) of rainfall [3][4][5].
Sources (6)
  1. 1Rain in West Palm Beach in Nov 2026? — Live Odds | Frenzy Capitalfrenzycap.com
  2. 2Rain in West Palm Beach in Nov 2026? | PredictPediapredictpedia.com
  3. 3West Palm Beach Weather in November (1981–2025)weatherblaze.com
  4. 4West Palm Beach (FL) Rainfall by Month – Average Precipitationweather-and-climate.com
  5. 5West Palm Beach weather in Novembertravelscoop.co.uk
  6. 6West Palm Beach Climate, Weather By Month, Average...weatherspark.com

9. What does historical daily rainfall data from 1991-2020 indicate about the probability of a dry spell following a period of heavy rain in the first week of November in South Florida?

Wet Season EndLate October or early November [1][2][3]
Dry Season PeriodNovember through April [1][2][3]
West Palm Beach Nov Avg Precipitation (1991-2020)4.75 inches [4]
Historical daily rainfall data from 1991-2020 do not provide specific indications about the probability of a dry spell following a period of heavy rain in the first week of November in South Florida. The available information describes a general climate transition during this period, rather than offering specific event probabilities for such a scenario [1][2][3].
South Florida transitions to a drier season in early November. The region's wet season typically concludes by late October or early November, ushering in the dry season which lasts from November through April [1][2][3]. This seasonal shift is characterized by a move towards more predictable, less storm-prone weather, with reduced humidity and overall precipitation [1][5][2]. For example, the 1991-2020 monthly climate normal for November precipitation in West Palm Beach is 4.75 inches, which represents a significant decrease from earlier months [4]. While these trends indicate a general reduction in precipitation, the provided facts lack the specific daily rainfall data and detailed probability analysis from 1991-2020 required to determine the likelihood of a dry spell occurring after an initial period of heavy rain in early November.
Sources (5)
  1. 1The Most Common Florida Weather Mythsvisitflorida.com
  2. 2Four things to watch as we head into November. Heavy...facebook.com
  3. 3When will south Florida rainy season be over?: r/Miamireddit.com
  4. 4Weather averages West Palm Beach, Floridausclimatedata.com
  5. 5Florida Thunderstorm Seasonweather.gov

10. Historically, what specific weather events, besides named tropical cyclones, have caused November rainfall in West Palm Beach to exceed the 3.6-inch monthly average?

Average November Rainfall (West Palm Beach)3.6 inches [1]
Notable Non-Cyclonic EventMid-November 2023 flooding in South Florida [2]
Contributing Weather SystemsLow-pressure systems, cold fronts, and stalled boundaries with tropical moisture [2][3]
Non-cyclonic weather systems significantly contribute to November rainfall. Historically, events distinct from named tropical cyclones, such as low-pressure systems, cold fronts, and stalled boundaries, have significantly contributed to November rainfall in South Florida. These systems interact with tropical moisture, with their intensity often increased by El Niño conditions [2][3]. West Palm Beach typically experiences an average monthly precipitation of 3.6 inches in November [1].
A recent event in November 2023 caused widespread flooding in South Florida. In mid-November 2023, South Florida experienced widespread flooding due to a combination of surface lows and tropical moisture, which led to record-breaking rainfall across the region [2]. While the specific impact on West Palm Beach's average is not detailed, this occurrence illustrates how non-cyclonic systems can generate extreme rainfall in the broader South Florida area [2].
Sources (3)
  1. 1West Palm Beach November Weatherextremeweatherwatch.com
  2. 2High winds, flooding rain leave thousands without power in...foxweather.com
  3. 3Severe Weather Outbreak in South Florida: February 2, 1998weather.gov

11. What Could Change the Odds

Key Catalysts

Weather prediction markets have grown rapidly, reaching a $1.1 billion market valuation [1][2][3]. This expansion is driven by increasing retail interest and new partnerships, such as the collaboration between Kalshi and The Weather Company, which facilitates real-time verification of weather outcomes [1][2][3].
Further catalysts include the influx of speculative retail capital and the development of brokerage services designed to help businesses hedge climate risk [1][4]. The increasing availability of granular, city-level, and longer-dated contracts for monthly and seasonal periods also contributes to market dynamism [1][3].
Market participants in late 2026 are trading on expectations of a mild US winter, though a powerful El Niño event introduces uncertainty into these long-term climate bets [5]. Locally, West Palm Beach is under a Flood Watch as of November 2, 2026, experiencing unsettled, stormy weather with significant rainfall and gusty winds, expected to improve by midweek [6][7]. Historically, November is drier in West Palm Beach, averaging 3.6 inches of precipitation (1991–2020 normals), but rainfall has varied widely, from a low of 0.13 inches (2024) to a high of 14.63 inches (1982) [8][9].

Key Dates & Catalysts

  • Expiration: December 15, 2026
  • Closes: December 01, 2026
Sources (9)
  1. 1Weathering The Storm: Hedging Climate Risk | Kalshi Researchkalshi.com
  2. 2Temperature check: alarm as prediction markets lean into weather and climate bets | US news | The Guardiantheguardian.com
  3. 3Weather Prediction Markets: Kalshi, ForecastEx, Polymarketnewsletter.predicted.co
  4. 4Brokerage Turns to Prediction Markets to Price Hurricane...bloomberg.com
  5. 5Super El Niño Spurs Early Winter Trades But Comes With Paradox - Bloombergbloomberg.com
  6. 6FORECAST: Flood Watch Continues with periods of heavy rain and gusty windswptv.com
  7. 77-Day Forecast 26.71N 80.05Wforecast.weather.gov
  8. 8West Palm Beach November Precipitation Totalsextremeweatherwatch.com
  9. 9West Palm Beach November Weatherextremeweatherwatch.com