Recent National Weather Service forecasts and ensemble guidance for Chicago O’Hare indicate an overnight low in the mid-60s on September 7, with 64–67 °F ranges capturing the bulk of market-implied probability. Light easterly winds off Lake Michigan, combined with partly cloudy skies and modest radiative cooling under a building high-pressure ridge, limit further temperature drops below the seasonal average of roughly 62 °F. Model consensus shows little spread in boundary-layer temperatures, though any increase in cloud cover or a slight wind shift could trim the minimum by a degree or two. The next updated forecast discussion and real-time mesonet observations overnight will provide the final inputs before market 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 Chicago on September 7?
Lowest temperature in Chicago on September 7?
58-59°F 42%
60-61°F 42%
62-63°F 42%
70-71°F 42%
NEW
NEW
Sep 7, 2026
57°F or below
1%
58-59°F
42%
60-61°F
42%
62-63°F
42%
64-65°F
33%
66-67°F
34%
68-69°F
41%
70-71°F
42%
72-73°F
3%
74-75°F
1%
76°F or higher
<1%
58-59°F 42%
60-61°F 42%
62-63°F 42%
70-71°F 42%
NEW
NEW
Sep 7, 2026
57°F or below
$0 Vol.
1%
58-59°F
$0 Vol.
42%
60-61°F
$0 Vol.
42%
62-63°F
$0 Vol.
42%
64-65°F
$0 Vol.
33%
66-67°F
$0 Vol.
34%
68-69°F
$0 Vol.
41%
70-71°F
$0 Vol.
42%
72-73°F
$0 Vol.
3%
74-75°F
$0 Vol.
1%
76°F or higher
$0 Vol.
<1%
This market will resolve to the temperature range that contains the lowest 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 lowest 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.Recent National Weather Service forecasts and ensemble guidance for Chicago O’Hare indicate an overnight low in the mid-60s on September 7, with 64–67 °F ranges capturing the bulk of market-implied probability. Light easterly winds off Lake Michigan, combined with partly cloudy skies and modest radiative cooling under a building high-pressure ridge, limit further temperature drops below the seasonal average of roughly 62 °F. Model consensus shows little spread in boundary-layer temperatures, though any increase in cloud cover or a slight wind shift could trim the minimum by a degree or two. The next updated forecast discussion and real-time mesonet observations overnight will provide the final inputs before market resolution.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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, 3:29 AM ET
Volume
$0End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 3:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest 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 lowest 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.Recent National Weather Service forecasts and ensemble guidance for Chicago O’Hare indicate an overnight low in the mid-60s on September 7, with 64–67 °F ranges capturing the bulk of market-implied probability. Light easterly winds off Lake Michigan, combined with partly cloudy skies and modest radiative cooling under a building high-pressure ridge, limit further temperature drops below the seasonal average of roughly 62 °F. Model consensus shows little spread in boundary-layer temperatures, though any increase in cloud cover or a slight wind shift could trim the minimum by a degree or two. The next updated forecast discussion and real-time mesonet observations overnight will provide the final inputs before market resolution.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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
$0End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 3:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...Recent National Weather Service forecasts and ensemble guidance for Chicago O’Hare indicate an overnight low in the mid-60s on September 7, with 64–67 °F ranges capturing the bulk of market-implied probability. Light easterly winds off Lake Michigan, combined with partly cloudy skies and modest radiative cooling under a building high-pressure ridge, limit further temperature drops below the seasonal average of roughly 62 °F. Model consensus shows little spread in boundary-layer temperatures, though any increase in cloud cover or a slight wind shift could trim the minimum by a degree or two. The next updated forecast discussion and real-time mesonet observations overnight will provide the final inputs before market 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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