Recent National Weather Service forecasts and model consensus point to overnight lows in the mid-60s for Chicago on August 27, with the daily minimum expected near 66°F under mostly clear skies and light northeast winds around 5 mph. These conditions favor radiational cooling after a cold front passage earlier in the week, though modest humidity and any residual cloud cover could limit the drop. Historical averages for the date hover near 65°F, and recent observed lows have tracked in the mid-60s range. Market clustering around 62–67°F reflects tight forecast spreads among guidance, with small differences in dew point or wind speed the main variables that could shift the exact minimum by a degree or two before official observations finalize the outcome.
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 27?
Lowest temperature in Chicago on August 27?
64-65°F 31%
62-63°F 29%
58-59°F 26%
60-61°F 26%
NEW
NEW
Aug 27, 2026
55°F or below
9%
56-57°F
17%
58-59°F
26%
60-61°F
26%
62-63°F
29%
64-65°F
31%
66-67°F
26%
68-69°F
26%
70-71°F
26%
72-73°F
2%
74°F or higher
9%
64-65°F 31%
62-63°F 29%
58-59°F 26%
60-61°F 26%
NEW
NEW
Aug 27, 2026
55°F or below
$32 Vol.
9%
56-57°F
$22 Vol.
17%
58-59°F
$0 Vol.
26%
60-61°F
$0 Vol.
26%
62-63°F
$0 Vol.
29%
64-65°F
$0 Vol.
31%
66-67°F
$0 Vol.
26%
68-69°F
$0 Vol.
26%
70-71°F
$0 Vol.
26%
72-73°F
$0 Vol.
2%
74°F or higher
$17 Vol.
9%
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 27 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
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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 National Weather Service forecasts and model consensus point to overnight lows in the mid-60s for Chicago on August 27, with the daily minimum expected near 66°F under mostly clear skies and light northeast winds around 5 mph. These conditions favor radiational cooling after a cold front passage earlier in the week, though modest humidity and any residual cloud cover could limit the drop. Historical averages for the date hover near 65°F, and recent observed lows have tracked in the mid-60s range. Market clustering around 62–67°F reflects tight forecast spreads among guidance, with small differences in dew point or wind speed the main variables that could shift the exact minimum by a degree or two before official observations finalize the outcome.
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 27 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
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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 25, 2026, 9:29 PM ET
Volume
$70End Date
Aug 27, 2026Market Opened
Aug 25, 2026, 9:29 PM 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 27 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
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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 National Weather Service forecasts and model consensus point to overnight lows in the mid-60s for Chicago on August 27, with the daily minimum expected near 66°F under mostly clear skies and light northeast winds around 5 mph. These conditions favor radiational cooling after a cold front passage earlier in the week, though modest humidity and any residual cloud cover could limit the drop. Historical averages for the date hover near 65°F, and recent observed lows have tracked in the mid-60s range. Market clustering around 62–67°F reflects tight forecast spreads among guidance, with small differences in dew point or wind speed the main variables that could shift the exact minimum by a degree or two before official observations finalize the outcome.
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 27 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
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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
$70End Date
Aug 27, 2026Market Opened
Aug 25, 2026, 9:29 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...Recent National Weather Service forecasts and model consensus point to overnight lows in the mid-60s for Chicago on August 27, with the daily minimum expected near 66°F under mostly clear skies and light northeast winds around 5 mph. These conditions favor radiational cooling after a cold front passage earlier in the week, though modest humidity and any residual cloud cover could limit the drop. Historical averages for the date hover near 65°F, and recent observed lows have tracked in the mid-60s range. Market clustering around 62–67°F reflects tight forecast spreads among guidance, with small differences in dew point or wind speed the main variables that could shift the exact minimum by a degree or two before official observations finalize the outcome.
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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