Forecast models and recent observations point to overnight lows near the long-term September average of 56°F for San Francisco, with trader odds clustered tightly between 56–59°F amid uncertainty over marine layer evolution. Persistent onshore flow from the Pacific maintains cool, moist air near the surface, while a relatively shallow inversion and variable cloud cover influence the rate of radiational cooling after sunset. Clearer intervals could allow temperatures to dip toward 56–57°F, whereas a thicker stratus deck or delayed clearing would support readings closer to 58–59°F. Official National Weather Service minimums from the downtown station, which resolve these markets, will reflect any late adjustments in boundary-layer winds or fog timing through early morning.
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 September 6?
Lowest temperature in San Francisco on September 6?
58-59°F 59%
56-57°F 51%
62-63°F 50%
49°F or below 43%
NEW
NEW
Sep 6, 2026
49°F or below
43%
50-51°F
7%
52-53°F
10%
54-55°F
16%
56-57°F
42%
58-59°F
44%
60-61°F
24%
62-63°F
50%
64-65°F
8%
66-67°F
10%
68°F or higher
<1%
58-59°F 59%
56-57°F 51%
62-63°F 50%
49°F or below 43%
NEW
NEW
Sep 6, 2026
49°F or below
$7 Vol.
43%
50-51°F
$28 Vol.
7%
52-53°F
$23 Vol.
10%
54-55°F
$0 Vol.
16%
56-57°F
$28 Vol.
42%
58-59°F
$53 Vol.
44%
60-61°F
$8 Vol.
24%
62-63°F
$15 Vol.
50%
64-65°F
$5 Vol.
8%
66-67°F
$5 Vol.
10%
68°F or higher
$9 Vol.
<1%
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 6 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.Forecast models and recent observations point to overnight lows near the long-term September average of 56°F for San Francisco, with trader odds clustered tightly between 56–59°F amid uncertainty over marine layer evolution. Persistent onshore flow from the Pacific maintains cool, moist air near the surface, while a relatively shallow inversion and variable cloud cover influence the rate of radiational cooling after sunset. Clearer intervals could allow temperatures to dip toward 56–57°F, whereas a thicker stratus deck or delayed clearing would support readings closer to 58–59°F. Official National Weather Service minimums from the downtown station, which resolve these markets, will reflect any late adjustments in boundary-layer winds or fog timing through early morning.
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 6 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 4, 2026, 7:29 AM ET
Volume
$181End Date
Sep 6, 2026Market Opened
Sep 4, 2026, 7:29 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 6 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.Forecast models and recent observations point to overnight lows near the long-term September average of 56°F for San Francisco, with trader odds clustered tightly between 56–59°F amid uncertainty over marine layer evolution. Persistent onshore flow from the Pacific maintains cool, moist air near the surface, while a relatively shallow inversion and variable cloud cover influence the rate of radiational cooling after sunset. Clearer intervals could allow temperatures to dip toward 56–57°F, whereas a thicker stratus deck or delayed clearing would support readings closer to 58–59°F. Official National Weather Service minimums from the downtown station, which resolve these markets, will reflect any late adjustments in boundary-layer winds or fog timing through early morning.
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 6 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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
$181End Date
Sep 6, 2026Market Opened
Sep 4, 2026, 7:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...Forecast models and recent observations point to overnight lows near the long-term September average of 56°F for San Francisco, with trader odds clustered tightly between 56–59°F amid uncertainty over marine layer evolution. Persistent onshore flow from the Pacific maintains cool, moist air near the surface, while a relatively shallow inversion and variable cloud cover influence the rate of radiational cooling after sunset. Clearer intervals could allow temperatures to dip toward 56–57°F, whereas a thicker stratus deck or delayed clearing would support readings closer to 58–59°F. Official National Weather Service minimums from the downtown station, which resolve these markets, will reflect any late adjustments in boundary-layer winds or fog timing through early morning.
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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