KalshiCheck availabilityKYC requiredVerified resolution dataFairly calibratedCurrent implied probability
52° to 53° 42%Leader of 6 outcomes
52° to 53° 42%Market quality
30 / 100
Low quality24h Volume
$677.9
Open interest
$676.9
Low open interestMarket data
Updated 6 minutes ago
Sep 28, 26, 2:00 PM UTCSep 30, 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.
Lowest temperature in Chicago on Sep 28, 2026?
KalshiHighest temperature in Chicago on Sep 28, 2026?
KalshiHighest temperature in Chicago on Sep 29, 2026?
KalshiRain in Chicago in Sep 2026?
KalshiHighest temperature in Chicago on September 29?
PolymarketWill the highest temperature in Chicago (CHI)(MDW)(KMDW) exceed 71 F on September 28, 2026? (maximum) (max) (hottest)?
ForecastExRules
If the minimum temperature recorded at Chicago (CLIMDW) for Sep 29, 2026, is less than 50° 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.