National Weather Service forecasts project Chicago's high temperature at O'Hare International Airport, the official measuring site, reaching 77-78°F this afternoon under partly sunny skies with southerly winds aloft, propelling market-implied odds to full consensus on 74°F or higher. Current observations show midday readings climbing into the low 60s°F amid light showers clearing, aligning with model consensus from NOAA's High-Resolution Rapid Refresh runs that favor rapid warming well above the April 13 normal of 58°F. This positioning reflects strong scientific agreement on persistent warm air advection, though realistic challenges include intensified scattered thunderstorms capping insolation or an unexpected cold front surge, with final hourly data releases determining resolution by midnight.
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 April 13?
Highest temperature in Chicago on April 13?
74°F or higher 100.0%
55°F or below <1%
56-57°F <1%
58-59°F <1%
$184,092 Vol.
$184,092 Vol.
55°F or below
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
No
70-71°F
No
72-73°F
No
74°F or higher
Yes
74°F or higher 100.0%
55°F or below <1%
56-57°F <1%
58-59°F <1%
$184,092 Vol.
$184,092 Vol.
55°F or below
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
No
70-71°F
No
72-73°F
No
74°F or higher
Yes
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Apr 9, 2026, 12:09 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
National Weather Service forecasts project Chicago's high temperature at O'Hare International Airport, the official measuring site, reaching 77-78°F this afternoon under partly sunny skies with southerly winds aloft, propelling market-implied odds to full consensus on 74°F or higher. Current observations show midday readings climbing into the low 60s°F amid light showers clearing, aligning with model consensus from NOAA's High-Resolution Rapid Refresh runs that favor rapid warming well above the April 13 normal of 58°F. This positioning reflects strong scientific agreement on persistent warm air advection, though realistic challenges include intensified scattered thunderstorms capping insolation or an unexpected cold front surge, with final hourly data releases determining resolution by midnight.
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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