Official observations at San Francisco International Airport (KSFO) confirm a maximum temperature of 62°F on April 24, 2026—the highest reached around noon—driving Polymarket's 100% implied probability for the 62-63°F outcome, as traders aligned with verified data from Weather Underground and National Weather Service records. Persistent marine layer stratus clouds suppressed solar heating, while moderate onshore winds advected cool Pacific air, matching NWS forecast model consensus for low-60s peaks amid typical April climatology (historical average high ~63°F). With measurements finalized to whole degrees Fahrenheit, realistic challenges are minimal, limited to rare post-processing revisions by NOAA observers.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in San Francisco on April 24?
62-63°F 100.0%
47°F or below <1%
48-49°F <1%
50-51°F <1%
$60,772 Vol.
$60,772 Vol.
47°F or below
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
Yes
64-65°F
No
66°F or higher
No
62-63°F 100.0%
47°F or below <1%
48-49°F <1%
50-51°F <1%
$60,772 Vol.
$60,772 Vol.
47°F or below
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
Yes
64-65°F
No
66°F or higher
No
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: Apr 22, 2026, 12:08 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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.
Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations at San Francisco International Airport (KSFO) confirm a maximum temperature of 62°F on April 24, 2026—the highest reached around noon—driving Polymarket's 100% implied probability for the 62-63°F outcome, as traders aligned with verified data from Weather Underground and National Weather Service records. Persistent marine layer stratus clouds suppressed solar heating, while moderate onshore winds advected cool Pacific air, matching NWS forecast model consensus for low-60s peaks amid typical April climatology (historical average high ~63°F). With measurements finalized to whole degrees Fahrenheit, realistic challenges are minimal, limited to rare post-processing revisions by NOAA observers.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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