Persistent marine layer influence and onshore westerly winds maintained moderate overnight temperatures across San Francisco on August 24, 2026, with official observations at SFO recording a daily low near 57°F under partly cloudy skies and haze. This aligned closely with the 1991–2020 climatological average low of 56°F for the date, though slightly elevated readings reflected limited radiational cooling amid the shallow marine layer (around 1,000 feet) and consistent 10–20 mph winds. Trader consensus heavily favored the 58–59°F bin, reflecting model consensus from NWS and GFS runs showing minimal deviation from seasonal norms without inland heat or offshore flow to suppress the minimum further. No major forecast shifts occurred in the 48 hours prior, supporting the market-implied odds for near-normal conditions.
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 24?
58-59°F 94%
56-57°F 1%
52-53°F <1%
54-55°F <1%
$2,901 Vol.
$2,901 Vol.
49°F or below
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
19%
58-59°F
94%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66-67°F
<1%
68°F or higher
<1%
58-59°F 94%
56-57°F 1%
52-53°F <1%
54-55°F <1%
$2,901 Vol.
$2,901 Vol.
49°F or below
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
19%
58-59°F
94%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66-67°F
<1%
68°F or higher
<1%
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.
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 22, 2026, 9:30 PM 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 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.
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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Persistent marine layer influence and onshore westerly winds maintained moderate overnight temperatures across San Francisco on August 24, 2026, with official observations at SFO recording a daily low near 57°F under partly cloudy skies and haze. This aligned closely with the 1991–2020 climatological average low of 56°F for the date, though slightly elevated readings reflected limited radiational cooling amid the shallow marine layer (around 1,000 feet) and consistent 10–20 mph winds. Trader consensus heavily favored the 58–59°F bin, reflecting model consensus from NWS and GFS runs showing minimal deviation from seasonal norms without inland heat or offshore flow to suppress the minimum further. No major forecast shifts occurred in the 48 hours prior, supporting the market-implied odds for near-normal conditions.
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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