The National Weather Service climatological report for San Francisco International Airport recorded a maximum temperature of 65°F on August 28, 2026, at 2:09 PM local time under overcast skies with light rain, fog, and haze. This official observation from the primary reporting station aligns precisely with the 64-65°F outcome, which commands 94.8% market-implied probability. Persistent marine layer influence and westerly winds near 15 mph kept values well below the 74°F seasonal normal, consistent with cool, stable conditions observed across METAR data throughout the day. Realistic challenges to resolution remain limited to any post-event data revision or alternative station weighting, though historical patterns indicate such adjustments are rare for this threshold.
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 28?
Highest temperature in San Francisco on August 28?
64-65°F 100.0%
57°F or below <1%
58-59°F <1%
60-61°F <1%
$40,508 Vol.
$40,508 Vol.
Aug 28, 2026
57°F or below
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
Yes
66-67°F
No
68-69°F
No
70-71°F
No
72-73°F
No
74-75°F
No
76°F or higher
No
64-65°F 100.0%
57°F or below <1%
58-59°F <1%
60-61°F <1%
$40,508 Vol.
$40,508 Vol.
Aug 28, 2026
57°F or below
$375 Vol.
No
58-59°F
$293 Vol.
No
60-61°F
$667 Vol.
No
62-63°F
$3,555 Vol.
No
64-65°F
$9,688 Vol.
Yes
66-67°F
$6,190 Vol.
No
68-69°F
$6,497 Vol.
No
70-71°F
$6,099 Vol.
No
72-73°F
$3,725 Vol.
No
74-75°F
$2,081 Vol.
No
76°F or higher
$1,338 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 28 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 National Weather Service climatological report for San Francisco International Airport recorded a maximum temperature of 65°F on August 28, 2026, at 2:09 PM local time under overcast skies with light rain, fog, and haze. This official observation from the primary reporting station aligns precisely with the 64-65°F outcome, which commands 94.8% market-implied probability. Persistent marine layer influence and westerly winds near 15 mph kept values well below the 74°F seasonal normal, consistent with cool, stable conditions observed across METAR data throughout the day. Realistic challenges to resolution remain limited to any post-event data revision or alternative station weighting, though historical patterns indicate such adjustments are rare for this threshold.
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 28 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 26, 2026, 8:57 PM ET
Volume
$40,508End Date
Aug 28, 2026Market Opened
Aug 26, 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 28 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 National Weather Service climatological report for San Francisco International Airport recorded a maximum temperature of 65°F on August 28, 2026, at 2:09 PM local time under overcast skies with light rain, fog, and haze. This official observation from the primary reporting station aligns precisely with the 64-65°F outcome, which commands 94.8% market-implied probability. Persistent marine layer influence and westerly winds near 15 mph kept values well below the 74°F seasonal normal, consistent with cool, stable conditions observed across METAR data throughout the day. Realistic challenges to resolution remain limited to any post-event data revision or alternative station weighting, though historical patterns indicate such adjustments are rare for this threshold.
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 28 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
$40,508End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 8:57 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The National Weather Service climatological report for San Francisco International Airport recorded a maximum temperature of 65°F on August 28, 2026, at 2:09 PM local time under overcast skies with light rain, fog, and haze. This official observation from the primary reporting station aligns precisely with the 64-65°F outcome, which commands 94.8% market-implied probability. Persistent marine layer influence and westerly winds near 15 mph kept values well below the 74°F seasonal normal, consistent with cool, stable conditions observed across METAR data throughout the day. Realistic challenges to resolution remain limited to any post-event data revision or alternative station weighting, though historical patterns indicate such adjustments are rare for this threshold.
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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