**Official forecasts from the National Weather Service and regional models point to a minimum temperature in San Francisco on September 6 centered in the mid-to-upper 50s°F, driven by moderate westerly onshore flow and partly clear skies that limit radiational cooling.** Persistent marine influence from the Pacific keeps surface temperatures anchored near the seasonal average low of 56.1°F, while winds of 10–20 mph mix warmer air and suppress deeper overnight drops. Recent model runs show little disagreement, with no incoming trough or high-pressure buildup to alter the pattern before resolution. Traders’ tight clustering around 56–59°F reflects this stable meteorological setup and the narrow range of plausible outcomes given current conditions and climatological baselines.
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?
58-59°F 59%
56-57°F 51%
60-61°F 38%
49°F or below 32%
49°F or below
32%
50-51°F
14%
52-53°F
21%
54-55°F
22%
56-57°F
42%
58-59°F
42%
60-61°F
20%
62-63°F
17%
64-65°F
14%
66-67°F
14%
68°F or higher
30%
58-59°F 59%
56-57°F 51%
60-61°F 38%
49°F or below 32%
49°F or below
32%
50-51°F
14%
52-53°F
21%
54-55°F
22%
56-57°F
42%
58-59°F
42%
60-61°F
20%
62-63°F
17%
64-65°F
14%
66-67°F
14%
68°F or higher
30%
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
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.
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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=ksfoResolver
0x69c47De9D...**Official forecasts from the National Weather Service and regional models point to a minimum temperature in San Francisco on September 6 centered in the mid-to-upper 50s°F, driven by moderate westerly onshore flow and partly clear skies that limit radiational cooling.** Persistent marine influence from the Pacific keeps surface temperatures anchored near the seasonal average low of 56.1°F, while winds of 10–20 mph mix warmer air and suppress deeper overnight drops. Recent model runs show little disagreement, with no incoming trough or high-pressure buildup to alter the pattern before resolution. Traders’ tight clustering around 56–59°F reflects this stable meteorological setup and the narrow range of plausible outcomes given current conditions and climatological baselines.
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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Frequently Asked Questions