Recent National Weather Service and local forecast models indicate scattered thunderstorms for Denver on September 18, producing a range of overnight low temperatures centered in the mid- to upper-50s°F. Cloud cover and precipitation associated with these storms limit radiational cooling by trapping longwave radiation, while variable wind speeds and moisture levels further modulate the minimum. Historical September averages near 49°F provide context, yet current atmospheric conditions—including a weak frontal boundary and lingering humidity—support the market’s tight clustering around 54–61°F outcomes. Traders are weighting the latest model runs showing slight disagreements in storm timing and intensity, with resolution hinging on the precise overnight minimum recorded at official stations. Updated guidance from the National Weather Service Denver/Boulder office over the next 48 hours will likely refine these probabilities.
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 18?
Lowest temperature in Denver on September 18?
58-59°F 40%
60-61°F 40%
54-55°F 39%
56-57°F 39%
NEW
NEW
Sep 18, 2026
51°F or below
6%
52-53°F
11%
54-55°F
39%
56-57°F
39%
58-59°F
40%
60-61°F
40%
62-63°F
19%
64-65°F
11%
66-67°F
7%
68-69°F
4%
70°F or higher
4%
58-59°F 40%
60-61°F 40%
54-55°F 39%
56-57°F 39%
NEW
NEW
Sep 18, 2026
51°F or below
$0 Vol.
6%
52-53°F
$0 Vol.
11%
54-55°F
$0 Vol.
39%
56-57°F
$0 Vol.
39%
58-59°F
$0 Vol.
40%
60-61°F
$0 Vol.
40%
62-63°F
$0 Vol.
19%
64-65°F
$0 Vol.
11%
66-67°F
$0 Vol.
7%
68-69°F
$0 Vol.
4%
70°F or higher
$0 Vol.
4%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Buckley Space Force Base Station in degrees Fahrenheit on 18 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=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.Recent National Weather Service and local forecast models indicate scattered thunderstorms for Denver on September 18, producing a range of overnight low temperatures centered in the mid- to upper-50s°F. Cloud cover and precipitation associated with these storms limit radiational cooling by trapping longwave radiation, while variable wind speeds and moisture levels further modulate the minimum. Historical September averages near 49°F provide context, yet current atmospheric conditions—including a weak frontal boundary and lingering humidity—support the market’s tight clustering around 54–61°F outcomes. Traders are weighting the latest model runs showing slight disagreements in storm timing and intensity, with resolution hinging on the precise overnight minimum recorded at official stations. Updated guidance from the National Weather Service Denver/Boulder office over the next 48 hours will likely refine these probabilities.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Buckley Space Force Base Station in degrees Fahrenheit on 18 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=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.
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 16, 2026, 3:30 AM ET
Volume
$0End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 3:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kbkfResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Buckley Space Force Base Station in degrees Fahrenheit on 18 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=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.Recent National Weather Service and local forecast models indicate scattered thunderstorms for Denver on September 18, producing a range of overnight low temperatures centered in the mid- to upper-50s°F. Cloud cover and precipitation associated with these storms limit radiational cooling by trapping longwave radiation, while variable wind speeds and moisture levels further modulate the minimum. Historical September averages near 49°F provide context, yet current atmospheric conditions—including a weak frontal boundary and lingering humidity—support the market’s tight clustering around 54–61°F outcomes. Traders are weighting the latest model runs showing slight disagreements in storm timing and intensity, with resolution hinging on the precise overnight minimum recorded at official stations. Updated guidance from the National Weather Service Denver/Boulder office over the next 48 hours will likely refine these probabilities.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Buckley Space Force Base Station in degrees Fahrenheit on 18 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=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.
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.
Volume
$0End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 3:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kbkfResolver
0x69c47De9D...Recent National Weather Service and local forecast models indicate scattered thunderstorms for Denver on September 18, producing a range of overnight low temperatures centered in the mid- to upper-50s°F. Cloud cover and precipitation associated with these storms limit radiational cooling by trapping longwave radiation, while variable wind speeds and moisture levels further modulate the minimum. Historical September averages near 49°F provide context, yet current atmospheric conditions—including a weak frontal boundary and lingering humidity—support the market’s tight clustering around 54–61°F outcomes. Traders are weighting the latest model runs showing slight disagreements in storm timing and intensity, with resolution hinging on the precise overnight minimum recorded at official stations. Updated guidance from the National Weather Service Denver/Boulder office over the next 48 hours will likely refine these probabilities.
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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