TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 21, 4:00 AM EST
Kalshi
This market tracks the highest daytime temperature recorded in San Francisco on July 20, 2026. The outcome will be determined by the official National Weather Service daily climatological report for that date, which provides the maximum temperature reading for the location.
Resolution is based on the maximum temperature recorded at San Francisco on July 20, 2026, according to the National Weather Service's Climatological Report (Daily), accessible via the NWS website for the San Francisco Bay Area office. The official data source is CLISFO from the NWS daily climate report for San Francisco Airport. Temperature readings are divided into six ranges: 68°F or below, 69-70°F, 71-72°F, 73-74°F, 75-76°F, and 77°F or above. Each range corresponds to a distinct market outcome. Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the final official NWS Climatological Report (Daily) serves as the authoritative source, superseding other weather services.