Latest National Weather Service guidance and ensemble output from GFS and ECMWF point to modest overnight cooling on August 30, keeping the daily minimum clustered near 56–59 °F amid variable marine-layer depth and light onshore flow. San Francisco’s Pacific-driven climate, shaped by coastal upwelling and frequent stratus, normally anchors late-summer lows in the mid-50s, while thinner clouds or lighter winds can permit extra radiational cooling and slightly lower readings. Model spreads remain tight on boundary-layer moisture and wind speed through the 48-hour window, producing the closely bunched market probabilities across the 50–60 °F range as traders weigh these subtle differences ahead of final observations at San Francisco International Airport.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in San Francisco on August 30?
Lowest temperature in San Francisco on August 30?
58-59°F 35%
56-57°F 34%
50-51°F 26%
54-55°F 26%
NEW
NEW
Aug 30, 2026
47°F or below
2%
48-49°F
2%
50-51°F
26%
52-53°F
25%
54-55°F
26%
56-57°F
34%
58-59°F
35%
60-61°F
26%
62-63°F
25%
64-65°F
10%
66°F or higher
9%
58-59°F 35%
56-57°F 34%
50-51°F 26%
54-55°F 26%
NEW
NEW
Aug 30, 2026
47°F or below
$263 Vol.
2%
48-49°F
$11 Vol.
2%
50-51°F
$0 Vol.
26%
52-53°F
$0 Vol.
25%
54-55°F
$0 Vol.
26%
56-57°F
$0 Vol.
34%
58-59°F
$0 Vol.
35%
60-61°F
$0 Vol.
26%
62-63°F
$0 Vol.
25%
64-65°F
$5 Vol.
10%
66°F or higher
$5 Vol.
9%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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.
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.Latest National Weather Service guidance and ensemble output from GFS and ECMWF point to modest overnight cooling on August 30, keeping the daily minimum clustered near 56–59 °F amid variable marine-layer depth and light onshore flow. San Francisco’s Pacific-driven climate, shaped by coastal upwelling and frequent stratus, normally anchors late-summer lows in the mid-50s, while thinner clouds or lighter winds can permit extra radiational cooling and slightly lower readings. Model spreads remain tight on boundary-layer moisture and wind speed through the 48-hour window, producing the closely bunched market probabilities across the 50–60 °F range as traders weigh these subtle differences ahead of final observations at San Francisco International Airport.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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.
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 lowest 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.
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 28, 2026, 10:30 AM ET
Volume
$284End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 10:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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.
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.Latest National Weather Service guidance and ensemble output from GFS and ECMWF point to modest overnight cooling on August 30, keeping the daily minimum clustered near 56–59 °F amid variable marine-layer depth and light onshore flow. San Francisco’s Pacific-driven climate, shaped by coastal upwelling and frequent stratus, normally anchors late-summer lows in the mid-50s, while thinner clouds or lighter winds can permit extra radiational cooling and slightly lower readings. Model spreads remain tight on boundary-layer moisture and wind speed through the 48-hour window, producing the closely bunched market probabilities across the 50–60 °F range as traders weigh these subtle differences ahead of final observations at San Francisco International Airport.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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.
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 lowest 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.
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
$284End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 10:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Latest National Weather Service guidance and ensemble output from GFS and ECMWF point to modest overnight cooling on August 30, keeping the daily minimum clustered near 56–59 °F amid variable marine-layer depth and light onshore flow. San Francisco’s Pacific-driven climate, shaped by coastal upwelling and frequent stratus, normally anchors late-summer lows in the mid-50s, while thinner clouds or lighter winds can permit extra radiational cooling and slightly lower readings. Model spreads remain tight on boundary-layer moisture and wind speed through the 48-hour window, producing the closely bunched market probabilities across the 50–60 °F range as traders weigh these subtle differences ahead of final observations at San Francisco International Airport.
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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