Official National Weather Service observations from San Francisco International Airport's Automated Surface Observing System confirm the highest temperature on May 6, 2026, reached 67°F around 12:45–12:56 p.m. local time, aligning precisely with trader consensus at 100% implied probability for 66-67°F. This outcome reflects typical early May conditions under a persistent marine layer and cool northerly breezes from high pressure over the eastern Pacific, keeping peaks near climatological normals of 67°F. Persistent low clouds and wind limited daytime heating, as captured in hourly METAR reports. While final daily climate summaries rarely revise ASOS data, a rare sensor calibration adjustment or supplemental observation could theoretically challenge resolution, though historical precedents show such changes affect under 1% of records.
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 6?
66-67°F 100.0%
55°F or below <1%
56-57°F <1%
58-59°F <1%
$51,165 Vol.
$51,165 Vol.
55°F or below
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
Yes
68-69°F
No
70-71°F
No
72-73°F
No
74°F or higher
No
66-67°F 100.0%
55°F or below <1%
56-57°F <1%
58-59°F <1%
$51,165 Vol.
$51,165 Vol.
55°F or below
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
Yes
68-69°F
No
70-71°F
No
72-73°F
No
74°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: May 4, 2026, 1:09 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 National Weather Service observations from San Francisco International Airport's Automated Surface Observing System confirm the highest temperature on May 6, 2026, reached 67°F around 12:45–12:56 p.m. local time, aligning precisely with trader consensus at 100% implied probability for 66-67°F. This outcome reflects typical early May conditions under a persistent marine layer and cool northerly breezes from high pressure over the eastern Pacific, keeping peaks near climatological normals of 67°F. Persistent low clouds and wind limited daytime heating, as captured in hourly METAR reports. While final daily climate summaries rarely revise ASOS data, a rare sensor calibration adjustment or supplemental observation could theoretically challenge resolution, though historical precedents show such changes affect under 1% of records.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions