Recent forecasts from the National Weather Service indicate a shift to northeasterly flow bringing cooler, drier air into the Chicago region on September 6, 2026, after several days of highs near 90°F. This advection, combined with partly cloudy skies and light winds, supports radiative cooling overnight and a daily minimum likely in the mid-to-upper 60s°F. Model runs show limited disagreement on the exact low, with historical September averages near 63°F providing context for the clustered market-implied odds around 64–69°F. Official observations at O’Hare or Midway will resolve the market once the full 24-hour period ends, with any unexpected clearing or wind shift potentially pushing the minimum lower.
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 6?
Lowest temperature in Chicago on September 6?
80°F or higher 47%
74-75°F 45%
66-67°F 28%
64-65°F 27%
NEW
NEW
Sep 6, 2026
61°F or below
16%
62-63°F
26%
64-65°F
27%
66-67°F
28%
68-69°F
27%
70-71°F
27%
72-73°F
25%
74-75°F
45%
76-77°F
2%
78-79°F
9%
80°F or higher
47%
80°F or higher 47%
74-75°F 45%
66-67°F 28%
64-65°F 27%
NEW
NEW
Sep 6, 2026
61°F or below
$15 Vol.
16%
62-63°F
$0 Vol.
26%
64-65°F
$0 Vol.
27%
66-67°F
$0 Vol.
28%
68-69°F
$0 Vol.
27%
70-71°F
$0 Vol.
27%
72-73°F
$0 Vol.
25%
74-75°F
$30 Vol.
45%
76-77°F
$5 Vol.
2%
78-79°F
$5 Vol.
9%
80°F or higher
$5 Vol.
47%
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 6 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 forecasts from the National Weather Service indicate a shift to northeasterly flow bringing cooler, drier air into the Chicago region on September 6, 2026, after several days of highs near 90°F. This advection, combined with partly cloudy skies and light winds, supports radiative cooling overnight and a daily minimum likely in the mid-to-upper 60s°F. Model runs show limited disagreement on the exact low, with historical September averages near 63°F providing context for the clustered market-implied odds around 64–69°F. Official observations at O’Hare or Midway will resolve the market once the full 24-hour period ends, with any unexpected clearing or wind shift potentially pushing the minimum lower.
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 6 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 4, 2026, 3:29 AM ET
Volume
$60End Date
Sep 6, 2026Market Opened
Sep 4, 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 6 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 forecasts from the National Weather Service indicate a shift to northeasterly flow bringing cooler, drier air into the Chicago region on September 6, 2026, after several days of highs near 90°F. This advection, combined with partly cloudy skies and light winds, supports radiative cooling overnight and a daily minimum likely in the mid-to-upper 60s°F. Model runs show limited disagreement on the exact low, with historical September averages near 63°F providing context for the clustered market-implied odds around 64–69°F. Official observations at O’Hare or Midway will resolve the market once the full 24-hour period ends, with any unexpected clearing or wind shift potentially pushing the minimum lower.
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 6 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
$60End Date
Sep 6, 2026Market Opened
Sep 4, 2026, 3:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...Recent forecasts from the National Weather Service indicate a shift to northeasterly flow bringing cooler, drier air into the Chicago region on September 6, 2026, after several days of highs near 90°F. This advection, combined with partly cloudy skies and light winds, supports radiative cooling overnight and a daily minimum likely in the mid-to-upper 60s°F. Model runs show limited disagreement on the exact low, with historical September averages near 63°F providing context for the clustered market-implied odds around 64–69°F. Official observations at O’Hare or Midway will resolve the market once the full 24-hour period ends, with any unexpected clearing or wind shift potentially pushing the minimum lower.
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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