**Official National Weather Service observations recorded a maximum of 77°F at San Francisco International Airport on August 26, 2026, at 1:15 PM local time—exactly 3°F above the 1991–2020 normal.** This placed the high squarely in the 76–77°F bin, aligning with late-summer conditions featuring mostly clear skies, haze, and light southwest winds that allowed modest warming before marine influence returned. Pre-event forecasts from the NWS and local outlets consistently projected afternoon highs near 75°F under similar patterns, giving traders high-confidence resolution data shortly after the period ended. The 100% market-implied probability on 76–77°F reflects this verified measurement rather than speculation. Only an unexpected revision to the official climatological summary or a shift to a different reference station would realistically alter the outcome.
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 August 26?
Highest temperature in San Francisco on August 26?
76-77°F 100.0%
69°F or below <1%
70-71°F <1%
72-73°F <1%
$77,263 Vol.
$77,263 Vol.
Aug 26, 2026
69°F or below
No
70-71°F
No
72-73°F
No
74-75°F
No
76-77°F
Yes
78-79°F
No
80-81°F
No
82-83°F
No
84-85°F
No
86-87°F
No
88°F or higher
No
76-77°F 100.0%
69°F or below <1%
70-71°F <1%
72-73°F <1%
$77,263 Vol.
$77,263 Vol.
Aug 26, 2026
69°F or below
$4,216 Vol.
No
70-71°F
$3,991 Vol.
No
72-73°F
$5,508 Vol.
No
74-75°F
$7,674 Vol.
No
76-77°F
$5,963 Vol.
Yes
78-79°F
$29,770 Vol.
No
80-81°F
$2,816 Vol.
No
82-83°F
$4,510 Vol.
No
84-85°F
$4,360 Vol.
No
86-87°F
$5,083 Vol.
No
88°F or higher
$3,372 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 26 Aug '26.
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.**Official National Weather Service observations recorded a maximum of 77°F at San Francisco International Airport on August 26, 2026, at 1:15 PM local time—exactly 3°F above the 1991–2020 normal.** This placed the high squarely in the 76–77°F bin, aligning with late-summer conditions featuring mostly clear skies, haze, and light southwest winds that allowed modest warming before marine influence returned. Pre-event forecasts from the NWS and local outlets consistently projected afternoon highs near 75°F under similar patterns, giving traders high-confidence resolution data shortly after the period ended.
The 100% market-implied probability on 76–77°F reflects this verified measurement rather than speculation. Only an unexpected revision to the official climatological summary or a shift to a different reference station would realistically alter the outcome.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 26 Aug '26.
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 24, 2026, 8:57 PM ET
Volume
$77,263End Date
Aug 26, 2026Market Opened
Aug 24, 2026, 8:57 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 26 Aug '26.
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.**Official National Weather Service observations recorded a maximum of 77°F at San Francisco International Airport on August 26, 2026, at 1:15 PM local time—exactly 3°F above the 1991–2020 normal.** This placed the high squarely in the 76–77°F bin, aligning with late-summer conditions featuring mostly clear skies, haze, and light southwest winds that allowed modest warming before marine influence returned. Pre-event forecasts from the NWS and local outlets consistently projected afternoon highs near 75°F under similar patterns, giving traders high-confidence resolution data shortly after the period ended.
The 100% market-implied probability on 76–77°F reflects this verified measurement rather than speculation. Only an unexpected revision to the official climatological summary or a shift to a different reference station would realistically alter the outcome.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 26 Aug '26.
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Volume
$77,263End Date
Aug 26, 2026Market Opened
Aug 24, 2026, 8:57 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Official National Weather Service observations recorded a maximum of 77°F at San Francisco International Airport on August 26, 2026, at 1:15 PM local time—exactly 3°F above the 1991–2020 normal.** This placed the high squarely in the 76–77°F bin, aligning with late-summer conditions featuring mostly clear skies, haze, and light southwest winds that allowed modest warming before marine influence returned. Pre-event forecasts from the NWS and local outlets consistently projected afternoon highs near 75°F under similar patterns, giving traders high-confidence resolution data shortly after the period ended. The 100% market-implied probability on 76–77°F reflects this verified measurement rather than speculation. Only an unexpected revision to the official climatological summary or a shift to a different reference station would realistically alter the outcome.
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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