Short Answer

The highest temperature in New York City on October 5, 2026, is likely to be 68° to 69°F, aligning with the Central Park climatological normal and a convergence of weather forecasts, priced at 98.0% by the market.

1. Market Behavior & Drivers

The market for New York City's October 5, 2026 high temperature moved sharply based on converging weather forecasts. The largest price shift occurred on the day of resolution, when the probability of a high temperature between 68°F and 69°F spiked 47.0 percentage points. The driver was the consolidation of forecasts predicting a high near 69°F. This forecast-driven move was later validated by official observations from LaGuardia Airport, which recorded a maximum temperature of approximately 68°F.
Price action began the prior day, October 4, as traders reacted to initial weather models. Consistent forecasts for a high around 69°F on October 5 drove a 15.0 percentage point drop in the contract for temperatures of 67°F or below. This repricing reflected growing consensus that cooler outcomes were becoming less likely, shifting probability toward the upper 60s.
  • The 68-69°F outcome is favored, aligning with the 69°F climatological normal.
  • Preliminary LaGuardia observations of about 68°F reinforce the 68-69°F range.
  • Earlier forecasts predicting 71-72°F appear unconfirmed by current observations.

Current Context

Observations for October 5, 2026, indicated maximum temperatures in the upper 60s Fahrenheit. Official data for the day showed a maximum of approximately 68°F at LaGuardia Airport (KLGA) [1]. An NWS Central Park climate report available early that morning listed a prior-day maximum of 62°F, but a citywide value depends on the specific station definition [2]. The weather setup featured clearing, mostly sunny conditions with northwest winds at 10–20 mph and gusts near 30–35 mph [3]. City-focused forecasts anticipated a high between 70°F and 72°F for October 5, with Tuesday expected to be cooler, near 65–66°F [3]. Local broadcast coverage on October 5 described the day as sunny with fall-like temperatures and provided updated forecasts [4]; however, search results did not expose a final verified Central Park climate maximum.
Prediction markets reflected expectations for temperatures in the upper 60s to low 70s. The Central Park normal high for October 5 is 69°F, with a normal low of 55°F [5]. The date's record high is 94°F, set in 1941, and the record low is 35°F from 1881 [6]. Polymarket reporting showed the 68–69°F and 70–71°F ranges each clustered near 44–46% [7]. A Kalshi-linked Preduck page priced 68–69°F at 88¢, while another Polymarket-linked page showed 70–71°F at 62¢ [8]. These prices were time-sensitive and exhibited inconsistencies across venues [7]. One market specifies resolution based on the highest whole-degree Fahrenheit reading from NOAA hourly observations at LaGuardia Airport (KLGA) for October 5, with Weather Underground observations as a fallback [9].
Sources (9)
  1. 1https://tgftp.nws.noaa.gov/weather/current/KLGA.htmltgftp.nws.noaa.gov
  2. 2https://tgftp.nws.noaa.gov/data/raw/cd/cdus41.kokx.cli.nyc.txttgftp.nws.noaa.gov
  3. 3NWS Forecast Office New York, NYweather.gov
  4. 4NYC Weather Forecast: October 5, 2026 | FOX 5 New Yorkfox5ny.com
  5. 5New York (United States of America) weatherweather.metoffice.gov.uk
  6. 6Forecast Office New York, NYweather.gov
  7. 7Highest temperature in NYC on October 5?polymarket.com
  8. 8Will the maximum temperature be 68-69° on Oct 5, 2026? · 48.0¢ — Preduckpreduck.com
  9. 9Highest temperature in NYC on October 5?predict.fun

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: 68° to 69°

📈 October 05, 2026: 47.0pp spike

Price increased from 50.0% to 97.0%

What happened: The primary driver for the 47.0 percentage point spike in the "68° to 69°" outcome was likely the convergence of weather forecasts for October 5, 2026, which predicted the high temperature in New York City to be approximately 69°F [1][2]. These forecasts, available on October 5, directly supported the specified outcome. This immediate information was reinforced by the Central Park climatological normal high for the date also being 69°F [3]. Social media activity was not identified as a discernible driver based on the available information.

Outcome: 67° or below

📉 October 04, 2026: 15.0pp drop

Price decreased from 24.0% to 9.0%

What happened: The primary driver of the 15.0 percentage point drop for the "67° or below" outcome in the "Highest temperature in New York City on Oct 5, 2026?" market was the consistent weather forecasts available on October 4, 2026. Multiple forecasts predicted high temperatures for October 5, 2026, to be around 70-72°F, which was further supported by the October 5 prediction market itself showing near-even probabilities for 68-71°F, clearly above the 67°F threshold [4]. This traditional news (weather forecasts) activity appears to have led the price move by indicating a lower probability for the "67° or below" outcome. There is no evidence of social media activity contributing to this movement, thus it appears irrelevant.
Sources (4)
  1. 1Central Park, NY Weather Forecast & Local Records | 65° High Tomorrowweatherforyou.com
  2. 2New York, NY (11229) Weather Forecast for Monday October 5th and the Week Ahead | N.Y. Insightsnyinsights.town.news
  3. 3https://tgftp.nws.noaa.gov/data/raw/cd/cdus41.kokx.cli.nyc.txttgftp.nws.noaa.gov
  4. 4NYC Weather: Gusty Monday, Cooler Tuesday, Dry Conditions Later Thishoodline.com

4. Market Data

Contract Snapshot

This market resolves YES for a specific temperature range if the highest temperature in New York City today falls within that range, and NO otherwise. Resolution can be delayed due to material errors in the initial non-preliminary data publication, awaiting a corrected revision or the market's Expiration Date. If no data is available by this time, all markets resolve to the last fair price determined by the Exchange.

Market Discussion

Current forecasts for October 5, 2026, in New York City estimate the high temperature to be around 70°F, with a plausible range of 68–72°F, driven by a post-frontal, mostly sunny setup with cooler air and winds [1][2][3][4][5][6]. Prediction market traders appear to center their expectations around 69–70°F, with Polymarket showing a near-even split between 68–69°F and 70–71°F, which is consistent with the typical October 5 high of 68°F for Central Park [1][2].

Sources (6)
  1. 1Highest temperature in NYC on October 5?polymarket.com
  2. 2Central Park, NY Weather Forecast & Local Records | 69° High Tomorrowweatherforyou.com
  3. 3New York City, NY Hourly Weather Forecast | Weather Undergroundwunderground.com
  4. 4NYC Weather: Gusty Monday, Cooler Tuesday, Dry Conditions Later Thishoodline.com
  5. 5Monday, October 5, 2026. New York, NY - Weather Forecastweathershogun.com
  6. 6New York Weather Monday 5 October 2026 - Hour by Houruscityweather.com

5. Trust Index

This scorecard was computed Oct 5, 2026 and may not reflect current market conditions.

Octagon Trust Index Kalshi 65 Caution

Integrity risk· Resolution quality

How it adds up
Integrity80% of score73Good

Resolution quality is low (30), 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 score32High Risk

Includes the cost to trade: a $1,000 order can't be filled here because the order book is too thin.

Trust score65Caution

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 · 5 don't apply · 1 awaiting data

6. How do maximum temperature readings from New York's Central Park and LaGuardia Airport typically differ in early October?

Temp Difference LaGuardia vs. Central Park1–3°F warmer at LaGuardia [1]
Central Park Oct Mean Temp58°F [2]
Oct 5, 2026 Predicted High (Market)68–69°F (54.6%) [3]
LaGuardia Airport typically records slightly warmer maximum temperatures than Central Park in early October. The maximum temperature readings from LaGuardia generally run about 1–3°F warmer than those from Central Park, though this difference is not constant and can reverse on specific days. This slight temperature elevation at LaGuardia is attributed to its greater exposure to the warmer coastal/urban fringe, while Central Park is situated inland within Manhattan. Both Central Park and LaGuardia are designated as separate official observing stations by NOAA/NWS, each maintaining distinct historical records and providing station-specific daily climatological data [1][4][5][6].
Central Park's historical climatology influences overall New York City temperature reporting. Central Park's long-term mean temperature for October is approximately 58°F, with early-October high temperatures historically falling in the upper 60s to low 70s [2][7]. The importance of station-specific data is evident, as NOAA lists Central Park and LaGuardia as distinct stations. Consequently, New York City's "highest temperature" for a given day might be whichever official station records the higher daily maximum [8][4][5]. For example, as of October 5, 2026, a prediction market listing for New York City's highest temperature on that date priced the 68–69°F range most heavily at 54.6%, followed by 70–71°F at 34.3% [3].
Sources (8)
  1. 1Climate of New York City - Wikipediaen.wikipedia.org
  2. 2[PDF] Average Monthly & Annual Temperatures at Central Parkweather.gov
  3. 3Will the number of Tornado reports exceed 50 in the US during October 2026? - ForecastEx Odds | CoinRithmcoinrithm.com
  4. 4La Guardia Airport, NY Historical Dataweather.gov
  5. 5Central Park, NY Historical Dataweather.gov
  6. 6Local Climatological Dataweather.gov
  7. 7Graphical Climatology of Central Park, New York Cityclimatestations.com
  8. 8Past Weather | National Centers for Environmental Information...ncei.noaa.gov

7. What large-scale weather patterns in early October 2026 would cause the high temperature to reach 76°F or above in New York City?

October mean high temperatureAbout 64.5–65°F [1][2][3][4]
76°F compared to October normalRoughly 11°F above October normal [1][2][3][4]
October 5, 2026 forecast highUpper 60s to around 70°F [1][5]
For New York City to reach 76°F or above in early October 2026, two primary large-scale weather patterns are most plausible. One scenario involves a persistent or rebuilding ridge of high pressure over the East, which would promote clear skies, strong daytime solar heating, and light winds [1][2][3][4]. This pattern facilitates a warm south-to-southwest flow of mild air into the city. The alternative is a warm-sector day preceding an approaching cold front, where a deep trough or surface low to the west or northwest would induce a southerly flow, bringing warm, humid air [1][5][3]. Temperatures could reach 76°F or higher if associated clouds, showers, or the front itself arrive late before frontal passage [1][5][3].
While a 76°F+ outcome is meteorologically plausible, it would be an upside-tail result. Early October can occasionally experience highs in the mid-70s, but the monthly average high for October in New York City is approximately 65°F [1][2][6]. This means a temperature of 76°F would be roughly 11°F above the typical October normal [1][2][6]. Despite this, published October 2026 outlooks do encompass daily highs reaching into the mid-to-upper 70s [2][7][6].
Current evidence for October 5, 2026, favors a cooler post-frontal regime. Available market and weather evidence suggests highs in the upper 60s to around 70°F for that specific date [1][5]. This cooler outlook is attributed to northwest flow and increased atmospheric mixing, even with sunshine present [1][5]. While large-scale climate trends, such as regional warming, modestly elevate the baseline risk of warmer temperatures, the immediate timing of ridges, air flow, and cloud cover remains more critical for a single day's temperature outcome [8][9].
Sources (9)
  1. 1Highest temperature in NYC on October 5?polymarket.com
  2. 2New York, NY Monthly Weatheraccuweather.com
  3. 3New York City Climate, Weather By Month, Average...weatherspark.com
  4. 4Climate of New York Cityen.wikipedia.org
  5. 5October 2026 - New York City Metro - American Weatheramericanwx.com
  6. 6Weather in New York in Octobertuiholidays.ie
  7. 7October 2026 Daily Weather Forecast for Manhattan, New...weathertab.com
  8. 8New York State Climate Impacts Assessment Chapter 02nyaspubs.onlinelibrary.wiley.com
  9. 9Monthly Climate Reports | October 2021ncei.noaa.gov

8. According to the 1991-2020 climate normals from NOAA, what is the statistical distribution of high temperatures for October 5th in NYC?

Normal High Temperature69°F (NOAA 1991–2020 climate normals, Central Park) [1][2]
Observed Temperature Range53°F to 84°F (1991–2020 observations) [3]
Frequency for 65-69°F30% (9/30 observations, 1991–2020) [3]
New York City's October 5th normal high is 69°F. According to the 1991–2020 climate normals from NOAA, the normal high temperature for October 5th at New York City's Central Park station is 69°F [1][2]. These 1991–2020 daily normals are official 30-year daily statistics, which were released in 2021 [4][5][6][7][8][9]. For the same 1991–2020 period, observed high temperatures on October 5th ranged from 53°F to 84°F, with an approximate mean of 67.5°F and a median of 67°F [3].
Observed high temperatures exhibit a specific historical distribution. The empirical distribution of these 30 observations from 1991–2020 indicates empirical quartiles around 61°F and 73°F [3]. Historical frequencies for October 5th show that temperatures in the 65–69°F range occurred 30% of the time [3]. Additionally, temperatures at or below 59°F and temperatures in the 75–79°F range each occurred 13% of the time [3]. These figures represent descriptive historical frequencies and are not NOAA-issued probabilities [3].
Sources (9)
  1. 1Normals and Extremes Central Park, NY (1869 to Present)weather.gov
  2. 2CENTRAL PARK NY OCTOBER ALMANAC Period of Record: 1869 to present All normals are from 1991-2020. Data seen are considered preliminary. For official data please, contact the National Centers for Environmental Information (NCEI). Last updated: May 29th, 2023weather.gov
  3. 3New York City October 5 Weather Recordsextremeweatherwatch.com
  4. 4I. Description - Daily Normalsncei.noaa.gov
  5. 5Readme_By-Variable_By-Station_Normals_Files.txtncei.noaa.gov
  6. 6Normals Calculation Methodology 2020ncei.noaa.gov
  7. 7U.S. Climate Normalsncei.noaa.gov
  8. 8NOAA Delivers New U.S. Climate Normals | Newsncei.noaa.gov
  9. 9U.S. Climate Normals 2020: U.S. Daily Climate Normals (1991-2020)ncei.noaa.gov

9. Which specific NOAA or NWS dataset will be used for official resolution, and what are the fallback sources if that data is unavailable on October 5, 2026?

Official Resolution DatasetNWS Daily Climate Report (CLI) for Central Park, NY [1][2]
Fallback Data SourceFirst official non-preliminary report [3][4]
Resolution for No DataLast fair price at the Exchange's sole discretion [3][4]
The National Weather Service (NWS) Daily Climate Report is the official NYC temperature source. Specifically, the Maximum/Observed Value in 0F from the National Weather Service (NWS) Daily Climate Report (CLI) for Central Park, New York (station NYC/KNYC) on October 5, 2026, will be used for official resolution [1][2]. This report is typically accessed via the NWS New York/Upton (OKX) climate portal or through the NWS CLI product [5][6][2]. It is important to note that the overnight CLI represents the final 24-hour daily report, whereas the late-afternoon CLI is considered preliminary [5][6][2].
Fallback protocols prioritize official, non-preliminary NWS reports exclusively. The contractual framework specifies that if the official data is unavailable, resolution does not involve alternative commercial weather services or forecast datasets [3][4]. Instead, resolution relies solely on the first official non-preliminary report that contains the relevant data [3][4]. For temporary unavailability of the CLI page, operational backup evidence includes the NWS Central Park/KNYC observation stream and the NWS Preliminary Local Climatological Data (CF6) report [7][8][9][1]. Additionally, NOAA/NCEI finalized climate records may be useful for later verification [7][8][9][1].
Backup sources provide corroboration, not independent settlement, with a final discretionary resolution. Backup sources like the NWS observation stream and CF6 report are considered corroborating or archival evidence [7][8][9][1]. They do not independently determine settlement unless explicitly stated otherwise by market rules [7][8][9][1]. In the event that no data are available by the specified deadline, all strikes will resolve to the last fair price, at the Exchange's sole discretion [3][4].
Sources (9)
  1. 1Weather Markets | Kalshi Help Centerhelp.kalshi.com
  2. 2SUBMITTED VIA CFTC PORTAL Secretary of the Commission Office of the Secretariat U.S. Commodity Futures Trading Commission Three Lafayette Center 1155 21st Street, N.W. Washington, D.C. 20581cftc.gov
  3. 3GLOBALTEMPERATUREassets.kalshi.com
  4. 4<maximum/minimum/average> <area> <above/below/exactly/at least/between> <count> <measurement units> <time period> <maximum/minimum/avearage>assets.kalshi.com
  5. 5Central Park, NY Historical Data - National Weather Serviceweather.gov
  6. 6Climate - National Weather Serviceweather.gov
  7. 7clinyc - National Weather Serviceforecast.weather.gov
  8. 8WFO Monthly/Daily Climate Data - National Weather Serviceforecast.weather.gov
  9. 9tgftp.nws.noaa.gov

10. How do the GFS and European (ECMWF) weather models compare in their 5-day forecast accuracy for New York City's October high temperatures?

Market-implied temperature range68–69°F (October 5, 2026) [1][2][3]
Prediction market probability for 68–69°F54.6% (October 5, 2026) [2]
Prediction market probability for 70–71°F34.3% (October 5, 2026) [2]
Evidence does not definitively favor GFS or ECMWF models for New York City. For October 5, 2026, at the 5-day lead, available sources do not establish that either the GFS or the European (ECMWF) weather model is more accurate for New York City's October high temperatures [1][2][3]. A complete historical 5-day GFS-versus-ECMWF verification for this specific event cannot be reconstructed from public archives, as the ECMWF archive retains only approximately the most recent 2–3 days of runs [1][3].
Specific forecast error comparisons for New York City remain unavailable from public sources. While NOAA/NWS resources identify GFS and statistical post-processing products, they do not provide a matched, station-specific 5-day temperature error comparison for New York City [4][5]. Furthermore, a New York climate-monitor source reports October daily maximum temperatures but lacks the corresponding GFS and ECMWF forecasts needed for model error calculations [6]. Given these limitations in establishing a definitive model accuracy, the defensible market-oriented estimate for October 5, 2026, is the observed target range implied by the market, 68–69°F [1][2][3]. As of October 5, 2026, the prediction-market listing showed New York City's highest temperature for October 5 concentrated in 68–69°F (54.6%), followed by 70–71°F (34.3%); 67°F or below accounted for 6.5% [2].
Sources (6)
  1. 1ENS Meteogramscharts.ecmwf.int
  2. 2Will the number of Tornado reports exceed 50 in the US during October 2026? - ForecastEx Odds | CoinRithmcoinrithm.com
  3. 3Open dataecmwf.int
  4. 4Weather Prediction Center (WPC) Home Pagenoaa.gov
  5. 5Weather Maps and Computer Modelsweather.gov
  6. 6Weather in New York - Climate monitor on September 2026weatherandclimate.info

11. What Could Change the Odds

Key Catalysts

NYC forecasts for Monday, October 5, 2026, centered on a daytime high of about 71–72°F (21.7–22.2°C) [1][2][3][4]. Weather Underground showed 71°F, while a local forecast reported about 72°F for the same day [3][4]. This forecast around 71–72°F would be modestly bullish versus the 69°F October 5 climatological normal high for Central Park [5][6]. However, it remains far below the 94°F daily record set in 1941 [5][7]. The evidence supports a warm-above-normal outcome, not a record-challenge scenario [5][7][6].
Bullish weather catalysts for a high-temperature market included afternoon clearing, sunshine, and a forecast near 71–72°F [2][8][4]. The timeline indicated that overnight/early morning October 5 began cloudy and in the mid-50s, but afternoon warming and clearing supported the daily maximum near 71–72°F [2][8][4].
Conversely, bearish catalysts involved morning cloud cover, strong northwest winds/gusts, and a cooler air mass arriving overnight and Tuesday [2][8][4]. Evening temperatures on October 5 were expected to fall toward about 50°F, with Tuesday, October 6, forecast near 65°F/17°C [2][8][4][6]. Official climate verification would come from the Central Park daily climate observation [6].

Key Dates & Catalysts

  • Strike Date: October 06, 2026
  • Expiration: October 12, 2026
  • Closes: October 06, 2026
Sources (8)
  1. 1NWS Forecast Office New York, NYweather.gov
  2. 2NYC Weather: Gusty Monday, Cooler Tuesday, Dry Conditions Later Thishoodline.com
  3. 3NYC Weather Forecast: October 5, 2026 | FOX 5 New Yorkfox5ny.com
  4. 4New York City, NY Hourly Weather Forecast | Weather Undergroundwunderground.com
  5. 5CENTRAL PARK NY OCTOBER ALMANAC Period of Record: 1869 to present All normals are from 1991-2020. Data seen are considered preliminary. For official data please, contact the National Centers for Environmental Information (NCEI). Last updated: May 29th, 2023weather.gov
  6. 6https://tgftp.nws.noaa.gov/data/raw/cd/cdus41.kokx.cli.nyc.txttgftp.nws.noaa.gov
  7. 7New York City October 5 Weather Recordsextremeweatherwatch.com
  8. 8New York (United States of America) weatherweather.metoffice.gov.uk

13. Historical Resolutions

Historical Resolutions: 20 markets in this series

Outcomes: 3 resolved YES, 17 resolved NO

Recent resolutions:

  • KXHIGHNY-26OCT04-T70: NO (Oct 05, 2026)
  • KXHIGHNY-26OCT04-T63: YES (Oct 05, 2026)
  • KXHIGHNY-26OCT04-B69.5: NO (Oct 05, 2026)
  • KXHIGHNY-26OCT04-B67.5: NO (Oct 05, 2026)
  • KXHIGHNY-26OCT04-B65.5: NO (Oct 05, 2026)