National Weather Service forecasts and supporting model consensus point to a high in the upper 70s for Chicago on September 7 under mostly sunny skies and light easterly flow, following several days of 90-plus readings earlier in the month. This setup favors 78-79°F as the most likely outcome while allowing limited upside potential into the low 80s if daytime heating exceeds expectations. Light winds and minimal cloud cover should limit mixing and support a standard diurnal rise from overnight lows in the mid-60s. The implied probabilities align with typical late-summer variability and climatological baselines near 76°F for early September, with resolution hinging on the official daily maximum at Chicago O’Hare.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Chicago on September 7?
Highest temperature in Chicago on September 7?
78-79°F 64%
80-81°F 27%
76-77°F 5%
82-83°F 3%
NEW
NEW
Sep 7, 2026
71°F or below
1%
72-73°F
2%
74-75°F
3%
76-77°F
5%
78-79°F
64%
80-81°F
27%
82-83°F
3%
84-85°F
2%
86-87°F
<1%
88-89°F
<1%
90°F or higher
<1%
78-79°F 64%
80-81°F 27%
76-77°F 5%
82-83°F 3%
NEW
NEW
Sep 7, 2026
71°F or below
$274 Vol.
1%
72-73°F
$363 Vol.
2%
74-75°F
$184 Vol.
3%
76-77°F
$477 Vol.
5%
78-79°F
$2,467 Vol.
64%
80-81°F
$671 Vol.
27%
82-83°F
$288 Vol.
3%
84-85°F
$310 Vol.
2%
86-87°F
$283 Vol.
<1%
88-89°F
$245 Vol.
<1%
90°F or higher
$295 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 7 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=kord
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.National Weather Service forecasts and supporting model consensus point to a high in the upper 70s for Chicago on September 7 under mostly sunny skies and light easterly flow, following several days of 90-plus readings earlier in the month. This setup favors 78-79°F as the most likely outcome while allowing limited upside potential into the low 80s if daytime heating exceeds expectations. Light winds and minimal cloud cover should limit mixing and support a standard diurnal rise from overnight lows in the mid-60s. The implied probabilities align with typical late-summer variability and climatological baselines near 76°F for early September, with resolution hinging on the official daily maximum at Chicago O’Hare.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 7 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=kord
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=kord
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, 2:56 AM ET
Volume
$5,857End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 2:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 7 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=kord
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.National Weather Service forecasts and supporting model consensus point to a high in the upper 70s for Chicago on September 7 under mostly sunny skies and light easterly flow, following several days of 90-plus readings earlier in the month. This setup favors 78-79°F as the most likely outcome while allowing limited upside potential into the low 80s if daytime heating exceeds expectations. Light winds and minimal cloud cover should limit mixing and support a standard diurnal rise from overnight lows in the mid-60s. The implied probabilities align with typical late-summer variability and climatological baselines near 76°F for early September, with resolution hinging on the official daily maximum at Chicago O’Hare.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 7 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=kord
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=kord
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
$5,857End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 2:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...National Weather Service forecasts and supporting model consensus point to a high in the upper 70s for Chicago on September 7 under mostly sunny skies and light easterly flow, following several days of 90-plus readings earlier in the month. This setup favors 78-79°F as the most likely outcome while allowing limited upside potential into the low 80s if daytime heating exceeds expectations. Light winds and minimal cloud cover should limit mixing and support a standard diurnal rise from overnight lows in the mid-60s. The implied probabilities align with typical late-summer variability and climatological baselines near 76°F for early September, with resolution hinging on the official daily maximum at Chicago O’Hare.
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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