KalshiCheck availabilityKYC requiredVerified resolution dataWell calibratedCurrent implied probability
77° or above 42.1%Leader of 6 outcomesVig-adjusted: raw venue quotes summed above 100% and were normalized.
77° or above 42.1%Market quality
67 / 100
Medium quality24h Volume
$8.2K
Open interest
$6.2K
Medium open interestSpread
2.0 pt
Moderate spreadMarket data
Updated 6 minutes ago
Sep 30, 26, 2:00 PM UTCOct 2, 26, 6:00 AM UTC
Trends
Venue terms
Source: Kalshi
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Early close:
- Yes
- Settlement timer:
- 5m (informational)
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Highest temperature in Chicago on Sep 30, 2026?
KalshiHighest temperature in Chicago on October 1?
PolymarketLowest temperature in Chicago on Sep 30, 2026?
KalshiHighest temperature in Chicago on October 2?
PolymarketWill the highest temperature in Chicago (CHI)(MDW)(KMDW) exceed 70 F on September 30, 2026? (maximum) (max) (hottest)?
ForecastExWill the highest temperature in Chicago (CHI)(MDW)(KMDW) exceed 69 F on September 30, 2026? (maximum) (max) (hottest)?
ForecastExRules
If the maximum temperature recorded at Chicago (CLIMDW) for Oct 1, 2026, is greater than 76° fahrenheit according to The Weather Company, then the market resolves to Yes.
Settles via:The Weather Company
- Not all weather data is the same. While checking a source like AccuWeather or Google Weather may help guide your decision, the official and final value used to determine this market is the maximum/minimum temperature as reported by the Weather Company. Reading weather data Preliminary Weather Company data may be subject to rounding and conversion differences from the final reported value. Use caution when interpreting preliminary Weather Company readings. If it is determined in the sole discretion of the Exchange that there is a material error in the initial non-preliminary publication, Expiration may be held until the publication of a non-materially-erroneous data revision or until the Expiration Date, whichever comes first. If no data is available at the end of this period, all markets will resolve to the last fair price determined by Kalshi. Please note, a status of "Final" on weather.com/kalshi is provided for convenience only, and does not guarantee data to be error-free and thus exempt from the above.
Rules for each outcome
- 77° or above
- If the maximum temperature recorded at Chicago (CLIMDW) for Oct 1, 2026, is greater than 76° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 73° to 74°
- If the maximum temperature recorded at Chicago (CLIMDW) for Oct 1, 2026, is between 73-74° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 75° to 76°
- If the maximum temperature recorded at Chicago (CLIMDW) for Oct 1, 2026, is between 75-76° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 71° to 72°
- If the maximum temperature recorded at Chicago (CLIMDW) for Oct 1, 2026, is between 71-72° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 69° to 70°
- If the maximum temperature recorded at Chicago (CLIMDW) for Oct 1, 2026, is between 69-70° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 68° or below
- If the maximum temperature recorded at Chicago (CLIMDW) for Oct 1, 2026, is less than 69° fahrenheit according to The Weather Company, then the market resolves to Yes.