Trader consensus on Polymarket implies an 80.5% probability for San Francisco's highest temperature at KSFO reaching 76°F or higher on March 29, diverging from National Weather Service guidance near 71°F amid sunny skies and light onshore flow. This positioning stems from the tail end of an unprecedented March 2026 heat wave that shattered records—including a 90°F downtown high on March 20—fueled by a persistent high-pressure ridge now departing after a midweek trough exit. Recent GFS ensemble runs trend toward low 70s with potential delayed marine layer clearing boosting afternoon highs above climatological March norms of 62°F, while ECMWF holds cooler in mid-60s; traders favor the warmer signals. Watch 12Z model updates and afternoon soundings for shifts ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in San Francisco on March 29?
Highest temperature in San Francisco on March 29?
76°F or higher 76%
74-75°F 10%
72-73°F 4.5%
70-71°F 3.9%
$34,381 Vol.
$34,381 Vol.
57°F or below
<1%
58-59°F
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
1%
66-67°F
1%
68-69°F
<1%
70-71°F
4%
72-73°F
5%
74-75°F
10%
76°F or higher
76%
76°F or higher 76%
74-75°F 10%
72-73°F 4.5%
70-71°F 3.9%
$34,381 Vol.
$34,381 Vol.
57°F or below
<1%
58-59°F
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
1%
66-67°F
1%
68-69°F
<1%
70-71°F
4%
72-73°F
5%
74-75°F
10%
76°F or higher
76%
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 25, 2026, 6:25 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...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...Trader consensus on Polymarket implies an 80.5% probability for San Francisco's highest temperature at KSFO reaching 76°F or higher on March 29, diverging from National Weather Service guidance near 71°F amid sunny skies and light onshore flow. This positioning stems from the tail end of an unprecedented March 2026 heat wave that shattered records—including a 90°F downtown high on March 20—fueled by a persistent high-pressure ridge now departing after a midweek trough exit. Recent GFS ensemble runs trend toward low 70s with potential delayed marine layer clearing boosting afternoon highs above climatological March norms of 62°F, while ECMWF holds cooler in mid-60s; traders favor the warmer signals. Watch 12Z model updates and afternoon soundings for shifts ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · Updated


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