KalshiCheck availabilityKYC requiredVerified resolution dataWell calibratedCurrent implied probability
66° or below 45.5%Leader of 6 outcomesVig-adjusted: raw venue quotes summed above 100% and were normalized.
66° or below 45.5%Market quality
55 / 100
Medium quality24h Volume
$2.2K
Open interest
$2.3K
Low open interestSpread
4.0 pt
Moderate spreadMarket data
Updated 13 minutes ago
Oct 4, 26, 2:00 PM UTCOct 6, 26, 8:00 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 Seattle on Oct 4, 2026?
KalshiLowest temperature in Seattle on Oct 4, 2026?
KalshiLowest temperature in Seattle on Oct 5, 2026?
KalshiRain in Seattle in Oct 2026?
KalshiHighest temperature in Seattle on October 5?
PolymarketWill the highest temperature in Seattle (SEA)(KSEA) exceed 69 F on October 4, 2026? (maximum) (max) (hottest)?
ForecastExRules
If the maximum temperature recorded at Seattle (CLISEA) for Oct 5, 2026, is less than 67° 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
- 66° or below
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 5, 2026, is less than 67° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 67° to 68°
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 5, 2026, is between 67-68° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 69° to 70°
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 5, 2026, is between 69-70° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 71° to 72°
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 5, 2026, is between 71-72° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 75° or above
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 5, 2026, is greater than 74° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 73° to 74°
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 5, 2026, is between 73-74° fahrenheit according to The Weather Company, then the market resolves to Yes.