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Temperatures

What will the lowest temperature in San Francisco (SF)(SFO)(KSFO) be?

San Francisco Daily Temperature Low 2026 · Oct 31, 2026 · Trading open

$19 vol.
Show all 11 outcomes
  • Below 53
    No trades yet
    YesNo
  • Below 56
    No trades yet
    YesNo
  • Below 58
    No trades yet
    YesNo

About this market

Traders price Below 57 at 83%, ahead of Below 55 at 61%.

The market has $19 in volume across 3 trades; the most recent was on Oct 30, 2026.

Trading closes on Nov 1, 2026, 1:59 AM ET. The result is confirmed by Weather Underground.

The daily temperature low in San Francisco, CA as reported by the Weather Underground for the San Francisco Intl Airport Station (KSFO).Disregard the large red and blue numbers at the top of the new Weather Underground website above the Observations table, as they are not the daily high and low temperatures used by Forecastex. Instead, click the green banner to access the old Weather Underground site and use the original summary table. Alternatively, use the Daily Observations table to identify the highest and lowest temperatures recorded that day. For more research and information on these markets, visit the Weather, Climate & Energy Analysis and Decision Support Website: https://weather.weatherclimatehumansystems.org/san-francisco-ksfo.html

Rules and timeline

Each outcome is its own contract. A Yes contract pays $1 if its outcome happens and $0 if not; a No contract pays the reverse. Because the contracts trade separately, their chances don't have to add up to 100%.

  • Below 57Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 57 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 55Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 55 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 54Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 54 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 48Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 48 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 49Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 49 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 50Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 50 F on October 31, 2026? (minimum) (min) (coldest).
Show rules for all 11 outcomes
  • Below 51Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 51 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 52Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 52 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 53Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 53 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 56Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 56 F on October 31, 2026? (minimum) (min) (coldest).
  • Below 58Resolves Yes if the lowest temperature in San Francisco (SF)(SFO)(KSFO) is below 58 F on October 31, 2026? (minimum) (min) (coldest).

Result confirmed by Weather Underground.

Trading opened
Oct 30, 2026
Trading closes
Nov 1, 2026, 1:59 AM ET
Expected result
Nov 1, 2026
Expected payout
Nov 1, 2026

Prices are the last trades on the ForecastEx exchange and can be delayed by about ten minutes. A chance is the price of a Yes contract, not a forecast by Aries. Event contracts involve risk, including the loss of the full amount paid. Information on this page is for informational purposes only and is not investment advice.