Recent National Weather Service forecasts and model consensus point to a shallow marine layer and moderate onshore westerly flow moderating overnight cooling in San Francisco for August 28, supporting trader emphasis on the 56–59°F range. Persistent stratus and fog potential overnight, combined with west winds of 5–15 mph, limit radiative cooling compared to clearer interior conditions, while a trough approaching from the Pacific Northwest introduces slightly cooler air and possible high clouds. This aligns with typical late-August climatology where coastal upwelling and the marine inversion keep lows near 55–60°F. Key variables for finer resolution include marine layer depth and exact cloud timing, with new model runs and NWS updates expected to clarify overnight minima before market close.
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 28?
Lowest temperature in San Francisco on August 28?
68°F or higher 57%
60-61°F 50%
49°F or below 49%
62-63°F 49%
NEW
NEW
Aug 28, 2026
49°F or below
49%
50-51°F
20%
52-53°F
19%
54-55°F
25%
56-57°F
27%
58-59°F
38%
60-61°F
50%
62-63°F
49%
64-65°F
2%
66-67°F
43%
68°F or higher
57%
68°F or higher 57%
60-61°F 50%
49°F or below 49%
62-63°F 49%
NEW
NEW
Aug 28, 2026
49°F or below
$0 Vol.
49%
50-51°F
$0 Vol.
20%
52-53°F
$0 Vol.
19%
54-55°F
$0 Vol.
25%
56-57°F
$0 Vol.
27%
58-59°F
$0 Vol.
38%
60-61°F
$0 Vol.
50%
62-63°F
$0 Vol.
49%
64-65°F
$0 Vol.
2%
66-67°F
$0 Vol.
43%
68°F or higher
$0 Vol.
57%
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 28 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 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.Recent National Weather Service forecasts and model consensus point to a shallow marine layer and moderate onshore westerly flow moderating overnight cooling in San Francisco for August 28, supporting trader emphasis on the 56–59°F range. Persistent stratus and fog potential overnight, combined with west winds of 5–15 mph, limit radiative cooling compared to clearer interior conditions, while a trough approaching from the Pacific Northwest introduces slightly cooler air and possible high clouds. This aligns with typical late-August climatology where coastal upwelling and the marine inversion keep lows near 55–60°F. Key variables for finer resolution include marine layer depth and exact cloud timing, with new model runs and NWS updates expected to clarify overnight minima before market close.
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 28 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 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 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 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, 9:30 PM ET
Volume
$0End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 9:30 PM 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 28 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 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.Recent National Weather Service forecasts and model consensus point to a shallow marine layer and moderate onshore westerly flow moderating overnight cooling in San Francisco for August 28, supporting trader emphasis on the 56–59°F range. Persistent stratus and fog potential overnight, combined with west winds of 5–15 mph, limit radiative cooling compared to clearer interior conditions, while a trough approaching from the Pacific Northwest introduces slightly cooler air and possible high clouds. This aligns with typical late-August climatology where coastal upwelling and the marine inversion keep lows near 55–60°F. Key variables for finer resolution include marine layer depth and exact cloud timing, with new model runs and NWS updates expected to clarify overnight minima before market close.
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 28 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 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 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 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
$0End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 9:30 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Recent National Weather Service forecasts and model consensus point to a shallow marine layer and moderate onshore westerly flow moderating overnight cooling in San Francisco for August 28, supporting trader emphasis on the 56–59°F range. Persistent stratus and fog potential overnight, combined with west winds of 5–15 mph, limit radiative cooling compared to clearer interior conditions, while a trough approaching from the Pacific Northwest introduces slightly cooler air and possible high clouds. This aligns with typical late-August climatology where coastal upwelling and the marine inversion keep lows near 55–60°F. Key variables for finer resolution include marine layer depth and exact cloud timing, with new model runs and NWS updates expected to clarify overnight minima before market close.
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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