Northwesterly winds advecting cooler Canadian air masses, combined with clear skies promoting strong radiational cooling overnight, positioned 60-61°F as the leading outcome for Chicago’s August 23 low temperature. This setup deviated several degrees below the 64.4°F climatological normal, with National Weather Service guidance and model consensus highlighting limited moisture and persistent northwest flow that suppressed minimum readings near official stations like Midway. Traders incorporated these atmospheric dynamics into the 55.6% implied probability, as lake moderation and light winds further constrained warming. No major forecast revisions emerged in the final 48 hours, keeping resolution criteria focused on verified overnight observations.
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 August 23?
Lowest temperature in Chicago on August 23?
60-61°F 0
$2,741 Vol.
$2,741 Vol.
Aug 23, 2026
60-61°F
-
60-61°F 0
$2,741 Vol.
$2,741 Vol.
Aug 23, 2026
60-61°F
$810 Vol.
-
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 23 Aug '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
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.Northwesterly winds advecting cooler Canadian air masses, combined with clear skies promoting strong radiational cooling overnight, positioned 60-61°F as the leading outcome for Chicago’s August 23 low temperature. This setup deviated several degrees below the 64.4°F climatological normal, with National Weather Service guidance and model consensus highlighting limited moisture and persistent northwest flow that suppressed minimum readings near official stations like Midway. Traders incorporated these atmospheric dynamics into the 55.6% implied probability, as lake moderation and light winds further constrained warming. No major forecast revisions emerged in the final 48 hours, keeping resolution criteria focused on verified overnight observations.
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 23 Aug '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
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 22, 2026, 12:28 AM ET
Volume
$2,741End Date
Aug 23, 2026Market Opened
Aug 22, 2026, 12:28 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 23 Aug '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
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.Northwesterly winds advecting cooler Canadian air masses, combined with clear skies promoting strong radiational cooling overnight, positioned 60-61°F as the leading outcome for Chicago’s August 23 low temperature. This setup deviated several degrees below the 64.4°F climatological normal, with National Weather Service guidance and model consensus highlighting limited moisture and persistent northwest flow that suppressed minimum readings near official stations like Midway. Traders incorporated these atmospheric dynamics into the 55.6% implied probability, as lake moderation and light winds further constrained warming. No major forecast revisions emerged in the final 48 hours, keeping resolution criteria focused on verified overnight observations.
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 23 Aug '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
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
$2,741End Date
Aug 23, 2026Market Opened
Aug 22, 2026, 12:28 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...Northwesterly winds advecting cooler Canadian air masses, combined with clear skies promoting strong radiational cooling overnight, positioned 60-61°F as the leading outcome for Chicago’s August 23 low temperature. This setup deviated several degrees below the 64.4°F climatological normal, with National Weather Service guidance and model consensus highlighting limited moisture and persistent northwest flow that suppressed minimum readings near official stations like Midway. Traders incorporated these atmospheric dynamics into the 55.6% implied probability, as lake moderation and light winds further constrained warming. No major forecast revisions emerged in the final 48 hours, keeping resolution criteria focused on verified overnight observations.
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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