Trader consensus on Polymarket prices a 48.5% implied probability for San Francisco's highest temperature reaching 76°F or higher on March 29, surpassing the National Weather Service's conservative guidance of near 71°F under sunny skies and light onshore winds that typically moderate coastal highs via the marine layer. This positioning stems from the lingering effects of a historic March heat wave—smashing records with downtown San Francisco hitting 90°F on March 20 and San Francisco International Airport at 89°F—fueled by a persistent upper-level ridge promoting subsidence and dry adiabatic warming. Ensemble models like GFS and ECMWF reveal upside potential for hotter outcomes if winds slacken further, enabling early boundary layer mixing; watch the NWS Bay Area evening forecast discussion for updates amid climatological March averages around 62°F.
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 49%
74-75°F 23%
72-73°F 13%
70-71°F 10%
$20,043 Vol.
$20,043 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
3%
68-69°F
5%
70-71°F
10%
72-73°F
13%
74-75°F
23%
76°F or higher
49%
76°F or higher 49%
74-75°F 23%
72-73°F 13%
70-71°F 10%
$20,043 Vol.
$20,043 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
3%
68-69°F
5%
70-71°F
10%
72-73°F
13%
74-75°F
23%
76°F or higher
49%
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 prices a 48.5% implied probability for San Francisco's highest temperature reaching 76°F or higher on March 29, surpassing the National Weather Service's conservative guidance of near 71°F under sunny skies and light onshore winds that typically moderate coastal highs via the marine layer. This positioning stems from the lingering effects of a historic March heat wave—smashing records with downtown San Francisco hitting 90°F on March 20 and San Francisco International Airport at 89°F—fueled by a persistent upper-level ridge promoting subsidence and dry adiabatic warming. Ensemble models like GFS and ECMWF reveal upside potential for hotter outcomes if winds slacken further, enabling early boundary layer mixing; watch the NWS Bay Area evening forecast discussion for updates amid climatological March averages around 62°F.
Experimental AI-generated summary referencing Polymarket data · Updated
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