Official measurements from National Weather Service stations confirmed a maximum temperature in the 80-81°F range for San Francisco on September 7, driving the market's near-certain outcome. This reading reflects observed conditions at primary reporting sites, exceeding the early-September climatological average of roughly 72°F amid persistent warm air advection and reduced marine-layer influence. With the date concluded, no additional forecast runs or observational revisions remain possible, though minor variations between official stations could theoretically influence resolution thresholds in comparable markets. The strong consensus underscores how real-time data from authoritative monitoring networks anchors trader assessments once an event passes.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in San Francisco on September 7?
80-81°F 100.0%
69°F or below <1%
70-71°F <1%
72-73°F <1%
$44,450 Vol.
$44,450 Vol.
69°F or below
<1%
70-71°F
<1%
72-73°F
<1%
74-75°F
<1%
76-77°F
<1%
78-79°F
<1%
80-81°F
100%
82-83°F
<1%
84-85°F
<1%
86-87°F
<1%
88°F or higher
<1%
80-81°F 100.0%
69°F or below <1%
70-71°F <1%
72-73°F <1%
$44,450 Vol.
$44,450 Vol.
69°F or below
<1%
70-71°F
<1%
72-73°F
<1%
74-75°F
<1%
76-77°F
<1%
78-79°F
<1%
80-81°F
100%
82-83°F
<1%
84-85°F
<1%
86-87°F
<1%
88°F or higher
<1%
The resolution source for this market will be information from NOAA, specifically the highest 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 5, 2026, 7:56 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 highest 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 measurements from National Weather Service stations confirmed a maximum temperature in the 80-81°F range for San Francisco on September 7, driving the market's near-certain outcome. This reading reflects observed conditions at primary reporting sites, exceeding the early-September climatological average of roughly 72°F amid persistent warm air advection and reduced marine-layer influence. With the date concluded, no additional forecast runs or observational revisions remain possible, though minor variations between official stations could theoretically influence resolution thresholds in comparable markets. The strong consensus underscores how real-time data from authoritative monitoring networks anchors trader assessments once an event passes.
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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