KalshiCheck availabilityKYC requiredVerified resolution dataWell calibratedSelected book midpoint
50° or below · —
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Stored price
50° or below 85.5%Leader of 6 outcomes
50° or below 85.5%Market quality
69 / 100
Medium quality24h Volume
$2.9K
Open interest
$3.4K
Medium open interestBid / Ask
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50° or belowSpread
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Market data
Updated 30 minutes ago
Oct 29, 26, 2:00 PM UTCOct 31, 26, 8:00 AM UTC
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Kalshi
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Early close:
- Yes
- Settlement timer:
- 5m (informational)
Market depth · 50° or below
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
Highest temperature in Seattle on Oct 31, 2026?
KalshiLowest temperature in Seattle on Oct 30, 2026?
KalshiLowest temperature in Seattle on Oct 31, 2026?
KalshiRain in Seattle in Oct 2026?
KalshiHighest temperature in Seattle on October 31?
PolymarketLowest temperature in Seattle on October 31?
PolymarketRules
If the maximum temperature recorded at Seattle (CLISEA) for Oct 30, 2026, is less than 51° 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
- 50° or below
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 30, 2026, is less than 51° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 51° to 52°
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 30, 2026, is between 51-52° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 53° to 54°
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 30, 2026, is between 53-54° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 57° to 58°
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 30, 2026, is between 57-58° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 55° to 56°
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 30, 2026, is between 55-56° fahrenheit according to The Weather Company, then the market resolves to Yes.
- 59° or above
- If the maximum temperature recorded at Seattle (CLISEA) for Oct 30, 2026, is greater than 58° fahrenheit according to The Weather Company, then the market resolves to Yes.
Prediction Source Comparison
- Also available on Gemini — Highest temperature in Seattle on October 30, 2026? · 50°F or below 85%