Trader consensus on Polymarket prices an 82.5% implied probability for San Francisco's highest temperature at San Francisco International Airport (SFO) reaching 66°F or higher today, driven by the National Weather Service's latest forecast calling for sunny skies and a high near 69°F amid light west-northwest winds of 10-15 mph. Clear conditions maximize solar insolation on this May date, when climatological averages hover around 67°F, with minimal marine layer persistence due to a stable high-pressure ridge promoting subsidence warming and adiabatic compression aloft. Recent overnight lows near 53°F set up favorable diurnal heating, while model ensembles from NOAA show tight agreement on afternoon peaks in the upper 60s. Breezier winds or unexpected stratus could cap highs at 64-65°F (13.5% odds), with hourly observations through evening providing final clarity as the market nears resolution.
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 15?
Highest temperature in San Francisco on May 15?
66°F or higher 82%
64-65°F 16%
62-63°F 2.1%
60-61°F <1%
$18,849 Vol.
$18,849 Vol.
54-55°F
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
1%
62-63°F
2%
64-65°F
16%
66°F or higher
82%
66°F or higher 82%
64-65°F 16%
62-63°F 2.1%
60-61°F <1%
$18,849 Vol.
$18,849 Vol.
54-55°F
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
1%
62-63°F
2%
64-65°F
16%
66°F or higher
82%
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 13, 2026, 1:03 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 an 82.5% implied probability for San Francisco's highest temperature at San Francisco International Airport (SFO) reaching 66°F or higher today, driven by the National Weather Service's latest forecast calling for sunny skies and a high near 69°F amid light west-northwest winds of 10-15 mph. Clear conditions maximize solar insolation on this May date, when climatological averages hover around 67°F, with minimal marine layer persistence due to a stable high-pressure ridge promoting subsidence warming and adiabatic compression aloft. Recent overnight lows near 53°F set up favorable diurnal heating, while model ensembles from NOAA show tight agreement on afternoon peaks in the upper 60s. Breezier winds or unexpected stratus could cap highs at 64-65°F (13.5% odds), with hourly observations through evening providing final clarity as the market nears resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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