Recent National Weather Service guidance and ensemble model runs indicate Denver will see mostly clear skies and light northerly winds overnight into September 9, supporting efficient radiational cooling under a building high-pressure ridge with dew points in the 40s. These conditions favor a minimum near the historical average of 52°F but tempered by the recent warm spell and forecast highs in the low-to-mid 80s, producing market-implied clustering around 56–61°F. Key uncertainties include exact wind speeds after midnight and any thin high-cloud interference that could limit cooling, with updated model outputs and official NWS briefings expected to refine the range before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Denver on September 9?
58-59°F 34%
56-57°F 31%
53°F or below 28%
60-61°F 28%
53°F or below
28%
54-55°F
23%
56-57°F
31%
58-59°F
34%
60-61°F
28%
62-63°F
26%
64-65°F
21%
66-67°F
9%
68-69°F
2%
70-71°F
19%
72°F or higher
3%
58-59°F 34%
56-57°F 31%
53°F or below 28%
60-61°F 28%
53°F or below
28%
54-55°F
23%
56-57°F
31%
58-59°F
34%
60-61°F
28%
62-63°F
26%
64-65°F
21%
66-67°F
9%
68-69°F
2%
70-71°F
19%
72°F or higher
3%
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=kbkf
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 7, 2026, 3:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kbkfResolver
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=kbkf
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=kbkfResolver
0x69c47De9D...Recent National Weather Service guidance and ensemble model runs indicate Denver will see mostly clear skies and light northerly winds overnight into September 9, supporting efficient radiational cooling under a building high-pressure ridge with dew points in the 40s. These conditions favor a minimum near the historical average of 52°F but tempered by the recent warm spell and forecast highs in the low-to-mid 80s, producing market-implied clustering around 56–61°F. Key uncertainties include exact wind speeds after midnight and any thin high-cloud interference that could limit cooling, with updated model outputs and official NWS briefings expected to refine the range before resolution.
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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