Trader consensus on Polymarket tilts toward mid-70s highs for San Francisco on March 27, driven by the latest NOAA and ECMWF model ensembles forecasting a strengthening high-pressure ridge over California, suppressing the persistent marine layer and allowing greater solar insolation and adiabatic warming aloft. Official NWS point forecasts cluster around 75°F at SFO airport, with GFS runs peaking at 76°F during afternoon hours, while historical March averages hover near 62°F—elevating implied probabilities for warmer bins. Differentiating the razor-thin 74-75°F (27%) and 76-77°F (26.5%) leads are model spread in boundary-layer mixing and coastal upwelling persistence; 72-73°F odds reflect cooler ECMWF outliers. Key watch: 18z model updates and morning fog burn-off observations, as temps hinge on sustained clear skies past noon.
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 27%
74-75°F 24%
72-73°F 20%
70-71°F 19%
63°F or below
3%
64-65°F
5%
66-67°F
2%
68-69°F
6%
70-71°F
19%
72-73°F
22%
74-75°F
27%
76-77°F
27%
78-79°F
14%
80-81°F
7%
82°F or higher
4%
76-77°F 27%
74-75°F 24%
72-73°F 20%
70-71°F 19%
63°F or below
3%
64-65°F
5%
66-67°F
2%
68-69°F
6%
70-71°F
19%
72-73°F
22%
74-75°F
27%
76-77°F
27%
78-79°F
14%
80-81°F
7%
82°F or higher
4%
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...Resolution Source
https://www.wunderground.com/history/daily/us/ca/san-francisco/KSFOResolver
0x69c47De9D...Trader consensus on Polymarket tilts toward mid-70s highs for San Francisco on March 27, driven by the latest NOAA and ECMWF model ensembles forecasting a strengthening high-pressure ridge over California, suppressing the persistent marine layer and allowing greater solar insolation and adiabatic warming aloft. Official NWS point forecasts cluster around 75°F at SFO airport, with GFS runs peaking at 76°F during afternoon hours, while historical March averages hover near 62°F—elevating implied probabilities for warmer bins. Differentiating the razor-thin 74-75°F (27%) and 76-77°F (26.5%) leads are model spread in boundary-layer mixing and coastal upwelling persistence; 72-73°F odds reflect cooler ECMWF outliers. Key watch: 18z model updates and morning fog burn-off observations, as temps hinge on sustained clear skies past noon.
Experimental AI-generated summary referencing Polymarket data · Updated
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