Trader sentiment for San Francisco's March 25 high temperature hinges on the latest National Weather Service forecast projecting 64-67°F amid a weakening marine layer, with ensemble models like GFS and ECMWF showing a spread that elevates 70°F or higher odds to 30% on potential early fog burn-off from an offshore ridge. Closely bunched mid-60s probabilities (64-69°F totaling ~61%) reflect consensus on partial clearing after morning stratus from cool Pacific waters, typical for March's climatology where highs average 63°F with diurnal ranges of 10-15°F. Key differentiator: boundary layer mixing strength; stronger onshore flow caps at 62-63°F (18.5%), while high-pressure dominance pushes toward 68-69°F (19.5%). Evening NWS updates could shift odds as sea breeze timing clarifies.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in San Francisco on March 25?
Highest temperature in San Francisco on March 25?
70°F or higher 30%
64-65°F 21%
66-67°F 21%
68-69°F 20%
51°F or below
1%
52-53°F
3%
54-55°F
5%
56-57°F
8%
58-59°F
17%
60-61°F
18%
62-63°F
19%
64-65°F
21%
66-67°F
21%
68-69°F
20%
70°F or higher
30%
70°F or higher 30%
64-65°F 21%
66-67°F 21%
68-69°F 20%
51°F or below
1%
52-53°F
3%
54-55°F
5%
56-57°F
8%
58-59°F
17%
60-61°F
18%
62-63°F
19%
64-65°F
21%
66-67°F
21%
68-69°F
20%
70°F or higher
30%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the San Francisco International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFO.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Mar 21, 2026, 6:24 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Trader sentiment for San Francisco's March 25 high temperature hinges on the latest National Weather Service forecast projecting 64-67°F amid a weakening marine layer, with ensemble models like GFS and ECMWF showing a spread that elevates 70°F or higher odds to 30% on potential early fog burn-off from an offshore ridge. Closely bunched mid-60s probabilities (64-69°F totaling ~61%) reflect consensus on partial clearing after morning stratus from cool Pacific waters, typical for March's climatology where highs average 63°F with diurnal ranges of 10-15°F. Key differentiator: boundary layer mixing strength; stronger onshore flow caps at 62-63°F (18.5%), while high-pressure dominance pushes toward 68-69°F (19.5%). Evening NWS updates could shift odds as sea breeze timing clarifies.
Experimental AI-generated summary referencing Polymarket data · Updated
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