National Weather Service forecasts for the San Francisco Bay Area projected daytime highs of 67–71°F on May 22 under mostly sunny conditions and light westerly winds, well above the month’s typical 64°F average. These conditions aligned with trader consensus reflected in the 100% implied probability for a high of 66°F or higher. Official observations from stations such as San Francisco International Airport ultimately determine resolution, with minimal scope for downward revision once data are finalized. A rapid marine layer intrusion or unforecast cloud cover could have tempered readings, though model consensus and real-time conditions made such outcomes improbable.
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 May 22?
66°F or higher 100.0%
47°F or below <1%
48-49°F <1%
50-51°F <1%
$17,355 Vol.
$17,355 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
No
64-65°F
No
66°F or higher
Yes
66°F or higher 100.0%
47°F or below <1%
48-49°F <1%
50-51°F <1%
$17,355 Vol.
$17,355 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
No
64-65°F
No
66°F or higher
Yes
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: May 20, 2026, 12:41 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
National Weather Service forecasts for the San Francisco Bay Area projected daytime highs of 67–71°F on May 22 under mostly sunny conditions and light westerly winds, well above the month’s typical 64°F average. These conditions aligned with trader consensus reflected in the 100% implied probability for a high of 66°F or higher. Official observations from stations such as San Francisco International Airport ultimately determine resolution, with minimal scope for downward revision once data are finalized. A rapid marine layer intrusion or unforecast cloud cover could have tempered readings, though model consensus and real-time conditions made such outcomes improbable.
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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