Official observations from the National Weather Service at San Francisco International Airport (KSFO) confirm a maximum temperature of 77°F on March 27, 2026, driving near-unanimous trader consensus (99.7% implied probability) for the 76-77°F outcome. This aligns with NOAA forecast model consensus from the prior 24-48 hours, which predicted mid-70s highs amid a moderating marine layer and light onshore winds following the early-March heat wave that shattered records near 90°F downtown. Mostly cloudy skies and dew points in the 40-56°F range limited further warming. Realistic challenges are minimal—only a rare post hoc data revision by NWS quality control could shift it, with final climatological reports expected soon.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in San Francisco on March 27?
Highest temperature in San Francisco on March 27?
76-77°F 100.0%
78-79°F <1%
80-81°F <1%
82°F or higher <1%
$109,879 Vol.
$109,879 Vol.
76-77°F
100%
78-79°F
<1%
80-81°F
<1%
82°F or higher
<1%
76-77°F 100.0%
78-79°F <1%
80-81°F <1%
82°F or higher <1%
$109,879 Vol.
$109,879 Vol.
76-77°F
100%
78-79°F
<1%
80-81°F
<1%
82°F or higher
<1%
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 23, 2026, 6:17 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 from the National Weather Service at San Francisco International Airport (KSFO) confirm a maximum temperature of 77°F on March 27, 2026, driving near-unanimous trader consensus (99.7% implied probability) for the 76-77°F outcome. This aligns with NOAA forecast model consensus from the prior 24-48 hours, which predicted mid-70s highs amid a moderating marine layer and light onshore winds following the early-March heat wave that shattered records near 90°F downtown. Mostly cloudy skies and dew points in the 40-56°F range limited further warming. Realistic challenges are minimal—only a rare post hoc data revision by NWS quality control could shift it, with final climatological reports expected soon.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions