National Weather Service observations at San Francisco International Airport and downtown stations recorded a daily maximum of 68–69 °F on May 21, locking in the market-implied outcome. Persistent marine-layer stratus and a moderate onshore flow suppressed solar heating despite mostly sunny skies, keeping temperatures near the seasonal average of 65–67 °F. Light west-southwest winds and the typical afternoon sea breeze further capped any inland warming, consistent with long-term climatology for late-May coastal conditions. Only a significant delay in the marine layer or an anomalous offshore flow could have pushed readings into the low 70s, scenarios not supported by the day’s official data or model guidance.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateHighest temperature in San Francisco on May 21?
68-69°F 100.0%
57°F or below <1%
58-59°F <1%
60-61°F <1%
$53,238 Vol.
$53,238 Vol.
57°F or below
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
Yes
70-71°F
No
72-73°F
No
74-75°F
No
76°F or higher
No
68-69°F 100.0%
57°F or below <1%
58-59°F <1%
60-61°F <1%
$53,238 Vol.
$53,238 Vol.
57°F or below
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
Yes
70-71°F
No
72-73°F
No
74-75°F
No
76°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.
Binuksan ang Market: May 19, 2026, 12:07 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Na-propose ang outcome: No
Walang dispute
Pinal na 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...Na-propose ang outcome: No
Walang dispute
Pinal na outcome: No
National Weather Service observations at San Francisco International Airport and downtown stations recorded a daily maximum of 68–69 °F on May 21, locking in the market-implied outcome. Persistent marine-layer stratus and a moderate onshore flow suppressed solar heating despite mostly sunny skies, keeping temperatures near the seasonal average of 65–67 °F. Light west-southwest winds and the typical afternoon sea breeze further capped any inland warming, consistent with long-term climatology for late-May coastal conditions. Only a significant delay in the marine layer or an anomalous offshore flow could have pushed readings into the low 70s, scenarios not supported by the day’s official data or model guidance.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update


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