National Weather Service forecasts for Chicago on August 26, 2026, currently indicate a high near 84°F under southwest flow ahead of a frontal system, with afternoon showers and thunderstorms likely after 4 p.m. and a 60% precipitation chance that could moderate peak readings if convection develops earlier. Model consensus and recent NWS point forecasts place the daily maximum in the low-to-mid 80s, consistent with climatological normals near 82°F and the observed pattern of warm advection tempered by lake influences and storm timing. These conditions explain the strong market concentration on 84-85°F and 82-83°F outcomes, as traders weigh the latest official guidance and any last-minute model shifts before resolution at the designated reporting station.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Chicago on August 26?
Highest temperature in Chicago on August 26?
84-85°F 45%
82-83°F 29%
88-89°F 14%
80-81°F 13%
NEW
NEW
Aug 26, 2026
75°F or below
1%
76-77°F
5%
78-79°F
5%
80-81°F
13%
82-83°F
29%
84-85°F
45%
86-87°F
8%
88-89°F
14%
90-91°F
<1%
92-93°F
<1%
94°F or higher
<1%
84-85°F 45%
82-83°F 29%
88-89°F 14%
80-81°F 13%
NEW
NEW
Aug 26, 2026
75°F or below
$15 Vol.
1%
76-77°F
$5 Vol.
5%
78-79°F
$15 Vol.
5%
80-81°F
$17 Vol.
13%
82-83°F
$133 Vol.
29%
84-85°F
$103 Vol.
45%
86-87°F
$24 Vol.
8%
88-89°F
$62 Vol.
14%
90-91°F
$15 Vol.
<1%
92-93°F
$15 Vol.
<1%
94°F or higher
$15 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 26 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest 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.National Weather Service forecasts for Chicago on August 26, 2026, currently indicate a high near 84°F under southwest flow ahead of a frontal system, with afternoon showers and thunderstorms likely after 4 p.m. and a 60% precipitation chance that could moderate peak readings if convection develops earlier. Model consensus and recent NWS point forecasts place the daily maximum in the low-to-mid 80s, consistent with climatological normals near 82°F and the observed pattern of warm advection tempered by lake influences and storm timing. These conditions explain the strong market concentration on 84-85°F and 82-83°F outcomes, as traders weigh the latest official guidance and any last-minute model shifts before resolution at the designated reporting station.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 26 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest 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 highest 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 24, 2026, 8:56 PM ET
Volume
$418End Date
Aug 26, 2026Market Opened
Aug 24, 2026, 8:56 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 26 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest 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.National Weather Service forecasts for Chicago on August 26, 2026, currently indicate a high near 84°F under southwest flow ahead of a frontal system, with afternoon showers and thunderstorms likely after 4 p.m. and a 60% precipitation chance that could moderate peak readings if convection develops earlier. Model consensus and recent NWS point forecasts place the daily maximum in the low-to-mid 80s, consistent with climatological normals near 82°F and the observed pattern of warm advection tempered by lake influences and storm timing. These conditions explain the strong market concentration on 84-85°F and 82-83°F outcomes, as traders weigh the latest official guidance and any last-minute model shifts before resolution at the designated reporting station.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 26 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest 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 highest 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
$418End Date
Aug 26, 2026Market Opened
Aug 24, 2026, 8:56 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...National Weather Service forecasts for Chicago on August 26, 2026, currently indicate a high near 84°F under southwest flow ahead of a frontal system, with afternoon showers and thunderstorms likely after 4 p.m. and a 60% precipitation chance that could moderate peak readings if convection develops earlier. Model consensus and recent NWS point forecasts place the daily maximum in the low-to-mid 80s, consistent with climatological normals near 82°F and the observed pattern of warm advection tempered by lake influences and storm timing. These conditions explain the strong market concentration on 84-85°F and 82-83°F outcomes, as traders weigh the latest official guidance and any last-minute model shifts before resolution at the designated reporting station.
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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