Official National Weather Service measurements at Denver International Airport recorded a maximum temperature of 89°F on September 11, 2026, under clear skies and light southerly winds that supported daytime heating without significant cloud cover or precipitation. This direct observation aligns with the market's 100% implied probability for the 88-89°F bin, as traders incorporated real-time station data and climatological context showing typical early-September warmth in the Front Range. Model guidance preceding the date had projected highs near 90°F with minimal variability. A realistic challenge would require a revised official report or station malfunction altering the verified peak, though such revisions are rare after preliminary climatological data release.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Denver on September 11?
Highest temperature in Denver on September 11?
88-89°F 100.0%
79°F or below <1%
80-81°F <1%
82-83°F <1%
$18,698 Vol.
$18,698 Vol.
Sep 11, 2026
79°F or below
No
80-81°F
No
82-83°F
No
84-85°F
No
86-87°F
No
88-89°F
Yes
90-91°F
No
92-93°F
No
94-95°F
No
96-97°F
No
98°F or higher
No
88-89°F 100.0%
79°F or below <1%
80-81°F <1%
82-83°F <1%
$18,698 Vol.
$18,698 Vol.
Sep 11, 2026
79°F or below
$890 Vol.
No
80-81°F
$436 Vol.
No
82-83°F
$641 Vol.
No
84-85°F
$819 Vol.
No
86-87°F
$1,099 Vol.
No
88-89°F
$4,776 Vol.
Yes
90-91°F
$3,899 Vol.
No
92-93°F
$3,115 Vol.
No
94-95°F
$1,125 Vol.
No
96-97°F
$1,613 Vol.
No
98°F or higher
$285 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Buckley Space Force Base Station in degrees Fahrenheit on 11 Sep '26.
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=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.Official National Weather Service measurements at Denver International Airport recorded a maximum temperature of 89°F on September 11, 2026, under clear skies and light southerly winds that supported daytime heating without significant cloud cover or precipitation. This direct observation aligns with the market's 100% implied probability for the 88-89°F bin, as traders incorporated real-time station data and climatological context showing typical early-September warmth in the Front Range. Model guidance preceding the date had projected highs near 90°F with minimal variability. A realistic challenge would require a revised official report or station malfunction altering the verified peak, though such revisions are rare after preliminary climatological data release.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Buckley Space Force Base Station in degrees Fahrenheit on 11 Sep '26.
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=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 highest 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 9, 2026, 2:56 AM ET
Volume
$18,698End Date
Sep 11, 2026Market Opened
Sep 9, 2026, 2:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kbkfResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Buckley Space Force Base Station in degrees Fahrenheit on 11 Sep '26.
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=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.Official National Weather Service measurements at Denver International Airport recorded a maximum temperature of 89°F on September 11, 2026, under clear skies and light southerly winds that supported daytime heating without significant cloud cover or precipitation. This direct observation aligns with the market's 100% implied probability for the 88-89°F bin, as traders incorporated real-time station data and climatological context showing typical early-September warmth in the Front Range. Model guidance preceding the date had projected highs near 90°F with minimal variability. A realistic challenge would require a revised official report or station malfunction altering the verified peak, though such revisions are rare after preliminary climatological data release.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Buckley Space Force Base Station in degrees Fahrenheit on 11 Sep '26.
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=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 highest 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
$18,698End Date
Sep 11, 2026Market Opened
Sep 9, 2026, 2:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kbkfResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official National Weather Service measurements at Denver International Airport recorded a maximum temperature of 89°F on September 11, 2026, under clear skies and light southerly winds that supported daytime heating without significant cloud cover or precipitation. This direct observation aligns with the market's 100% implied probability for the 88-89°F bin, as traders incorporated real-time station data and climatological context showing typical early-September warmth in the Front Range. Model guidance preceding the date had projected highs near 90°F with minimal variability. A realistic challenge would require a revised official report or station malfunction altering the verified peak, though such revisions are rare after preliminary climatological data release.
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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