Official NOAA observations at Chicago O'Hare International Airport recorded a minimum temperature of 58–59°F on August 24, 2026, reflecting strong radiative cooling under mostly clear skies and light winds after daytime highs near 75°F. This outcome aligns with local climatology for late-August nights when dew points drop and calm conditions enhance surface heat loss, exceeding the long-term average low of 64°F. Trader consensus at 98% on this range reflects verified station data and limited forecast uncertainty once the period closed. Minor revisions in preliminary reports or station-specific microclimate effects remain the only plausible factors that could shift resolution, though such changes are rare given established verification protocols.
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 24?
58-59°F 98%
56-57°F <1%
47°F or below <1%
48-49°F <1%
$4,030 Vol.
$4,030 Vol.
47°F or below
<1%
48-49°F
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58-59°F
98%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66°F or higher
<1%
58-59°F 98%
56-57°F <1%
47°F or below <1%
48-49°F <1%
$4,030 Vol.
$4,030 Vol.
47°F or below
<1%
48-49°F
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58-59°F
98%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66°F or higher
<1%
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.
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, 9:29 PM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...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.
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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...Official NOAA observations at Chicago O'Hare International Airport recorded a minimum temperature of 58–59°F on August 24, 2026, reflecting strong radiative cooling under mostly clear skies and light winds after daytime highs near 75°F. This outcome aligns with local climatology for late-August nights when dew points drop and calm conditions enhance surface heat loss, exceeding the long-term average low of 64°F. Trader consensus at 98% on this range reflects verified station data and limited forecast uncertainty once the period closed. Minor revisions in preliminary reports or station-specific microclimate effects remain the only plausible factors that could shift resolution, though such changes are rare given established verification protocols.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions