Recent National Weather Service guidance projects a Thursday high near 73°F at San Francisco International Airport under partly cloudy skies, with morning marine layer clouds giving way to afternoon sun. Onshore westerly flow at 5–15 mph and a compressed marine layer limit daytime heating, keeping values near or slightly below seasonal normals of 70–75°F. Model consensus shows minimal warming absent offshore flow or clearer conditions, while variable cloud timing introduces uncertainty in the precise peak. Traders assign roughly equal weight across 68–85°F bins because small shifts in fog clearance or wind strength could push the daily maximum across several resolution thresholds. Updated NWS briefings and afternoon model runs ahead of September 24 remain the key near-term catalysts.
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 September 24?
72-73°F 24%
70-71°F 23%
74-75°F 22%
68-69°F 19%
67°F or below
9%
68-69°F
19%
70-71°F
23%
72-73°F
24%
74-75°F
22%
76-77°F
10%
78-79°F
19%
80-81°F
11%
82-83°F
9%
84-85°F
7%
86°F or higher
5%
72-73°F 24%
70-71°F 23%
74-75°F 22%
68-69°F 19%
67°F or below
9%
68-69°F
19%
70-71°F
23%
72-73°F
24%
74-75°F
22%
76-77°F
10%
78-79°F
19%
80-81°F
11%
82-83°F
9%
84-85°F
7%
86°F or higher
5%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Sep 22, 2026, 7:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Recent National Weather Service guidance projects a Thursday high near 73°F at San Francisco International Airport under partly cloudy skies, with morning marine layer clouds giving way to afternoon sun. Onshore westerly flow at 5–15 mph and a compressed marine layer limit daytime heating, keeping values near or slightly below seasonal normals of 70–75°F. Model consensus shows minimal warming absent offshore flow or clearer conditions, while variable cloud timing introduces uncertainty in the precise peak. Traders assign roughly equal weight across 68–85°F bins because small shifts in fog clearance or wind strength could push the daily maximum across several resolution thresholds. Updated NWS briefings and afternoon model runs ahead of September 24 remain the key near-term catalysts.
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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Frequently Asked Questions