Official observations from the San Francisco International Airport station (KSFO), the authoritative source for such metrics, recorded a maximum temperature of 61°F on April 1, 2026, solidifying trader consensus at full implied probability for the 60-61°F outcome. Persistent marine layer stratus clouds, mostly overcast skies, and light rainfall totaling 0.05 inches inhibited solar heating, capping highs below the early April climatological average of 63°F despite a record-warm March preceding it. This aligns with National Weather Service pre-event forecasts emphasizing cool, moist onshore flow. Realistic challenges would require rare data quality revisions from Weather Underground or NOAA audits, but validated records render resolution firm.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in San Francisco on April 1?
Highest temperature in San Francisco on April 1?
60-61°F 100.0%
53°F or below <1%
54-55°F <1%
56-57°F <1%
$65,118 Vol.
$65,118 Vol.
53°F or below
No
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
Yes
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
No
70-71°F
No
72°F or higher
No
60-61°F 100.0%
53°F or below <1%
54-55°F <1%
56-57°F <1%
$65,118 Vol.
$65,118 Vol.
53°F or below
No
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
Yes
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
No
70-71°F
No
72°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: Mar 29, 2026, 4:12 PM 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 from the San Francisco International Airport station (KSFO), the authoritative source for such metrics, recorded a maximum temperature of 61°F on April 1, 2026, solidifying trader consensus at full implied probability for the 60-61°F outcome. Persistent marine layer stratus clouds, mostly overcast skies, and light rainfall totaling 0.05 inches inhibited solar heating, capping highs below the early April climatological average of 63°F despite a record-warm March preceding it. This aligns with National Weather Service pre-event forecasts emphasizing cool, moist onshore flow. Realistic challenges would require rare data quality revisions from Weather Underground or NOAA audits, but validated records render resolution firm.
Experimental AI-generated summary referencing Polymarket data · Updated
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