Recent NWS guidance and model consensus indicate a minimum temperature near 62–63 °F under partly to mostly clear skies with light northeast winds, allowing moderate radiative cooling after a daytime high in the mid-70s. Trader odds cluster tightly around both the normal range (68–69 °F at 44 %) and cooler thresholds (51 °F or below at 44 %) because small differences in cloud timing or boundary-layer mixing can shift the low by several degrees. Clear, calm conditions promote stronger surface cooling via longwave radiation loss, while any residual cloud deck or increased wind would limit the drop and favor readings closer to 70 °F. Historical August climatology places the average low near 64 °F, underscoring how current atmospheric variability keeps multiple bins competitive until final observations are recorded.
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?
68-69°F 95%
70°F or higher 95%
51°F or below 91%
54-55°F 33%
NEW
NEW
Aug 23, 2026
51°F or below
91%
52-53°F
22%
54-55°F
33%
56-57°F
33%
58-59°F
25%
60-61°F
33%
62-63°F
34%
64-65°F
33%
66-67°F
33%
68-69°F
95%
70°F or higher
95%
68-69°F 95%
70°F or higher 95%
51°F or below 91%
54-55°F 33%
NEW
NEW
Aug 23, 2026
51°F or below
$17 Vol.
91%
52-53°F
$6 Vol.
22%
54-55°F
$0 Vol.
33%
56-57°F
$0 Vol.
33%
58-59°F
$5 Vol.
25%
60-61°F
$5 Vol.
33%
62-63°F
$20 Vol.
34%
64-65°F
$0 Vol.
33%
66-67°F
$0 Vol.
33%
68-69°F
$25 Vol.
95%
70°F or higher
$50 Vol.
95%
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.Recent NWS guidance and model consensus indicate a minimum temperature near 62–63 °F under partly to mostly clear skies with light northeast winds, allowing moderate radiative cooling after a daytime high in the mid-70s. Trader odds cluster tightly around both the normal range (68–69 °F at 44 %) and cooler thresholds (51 °F or below at 44 %) because small differences in cloud timing or boundary-layer mixing can shift the low by several degrees. Clear, calm conditions promote stronger surface cooling via longwave radiation loss, while any residual cloud deck or increased wind would limit the drop and favor readings closer to 70 °F. Historical August climatology places the average low near 64 °F, underscoring how current atmospheric variability keeps multiple bins competitive until final observations are recorded.
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
$128End 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.Recent NWS guidance and model consensus indicate a minimum temperature near 62–63 °F under partly to mostly clear skies with light northeast winds, allowing moderate radiative cooling after a daytime high in the mid-70s. Trader odds cluster tightly around both the normal range (68–69 °F at 44 %) and cooler thresholds (51 °F or below at 44 %) because small differences in cloud timing or boundary-layer mixing can shift the low by several degrees. Clear, calm conditions promote stronger surface cooling via longwave radiation loss, while any residual cloud deck or increased wind would limit the drop and favor readings closer to 70 °F. Historical August climatology places the average low near 64 °F, underscoring how current atmospheric variability keeps multiple bins competitive until final observations are recorded.
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
$128End Date
Aug 23, 2026Market Opened
Aug 22, 2026, 12:28 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...Recent NWS guidance and model consensus indicate a minimum temperature near 62–63 °F under partly to mostly clear skies with light northeast winds, allowing moderate radiative cooling after a daytime high in the mid-70s. Trader odds cluster tightly around both the normal range (68–69 °F at 44 %) and cooler thresholds (51 °F or below at 44 %) because small differences in cloud timing or boundary-layer mixing can shift the low by several degrees. Clear, calm conditions promote stronger surface cooling via longwave radiation loss, while any residual cloud deck or increased wind would limit the drop and favor readings closer to 70 °F. Historical August climatology places the average low near 64 °F, underscoring how current atmospheric variability keeps multiple bins competitive until final observations are recorded.
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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