Trader consensus has locked in at 100% for a high temperature of 58-59°F in Chicago on May 13, driven by the National Weather Service's official observation at O'Hare International Airport (KORD), the city's designated recording station, which measured a maximum of 59°F amid partly sunny skies and steady northeast winds around 15 mph suppressing warmer air advection. This aligns with pre-event NOAA forecast model consensus from GFS and ECMWF, projecting below-normal highs in the upper 50s due to a lingering upper-level trough over the Midwest and cool Great Lakes influence, well shy of the climatological May 13 average of 69.5°F. Realistic challenges are minimal but could include rare post-processing data revisions from quality control checks; no further updates expected as the market nears resolution.
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 May 13?
58-59°F 100.0%
45°F or below <1%
46-47°F <1%
48-49°F <1%
$98,188 Vol.
$98,188 Vol.
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
No
56-57°F
No
58-59°F
Yes
60-61°F
No
62-63°F
No
64°F or higher
No
58-59°F 100.0%
45°F or below <1%
46-47°F <1%
48-49°F <1%
$98,188 Vol.
$98,188 Vol.
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
No
56-57°F
No
58-59°F
Yes
60-61°F
No
62-63°F
No
64°F or higher
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.
Market Opened: May 11, 2026, 12:15 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
Trader consensus has locked in at 100% for a high temperature of 58-59°F in Chicago on May 13, driven by the National Weather Service's official observation at O'Hare International Airport (KORD), the city's designated recording station, which measured a maximum of 59°F amid partly sunny skies and steady northeast winds around 15 mph suppressing warmer air advection. This aligns with pre-event NOAA forecast model consensus from GFS and ECMWF, projecting below-normal highs in the upper 50s due to a lingering upper-level trough over the Midwest and cool Great Lakes influence, well shy of the climatological May 13 average of 69.5°F. Realistic challenges are minimal but could include rare post-processing data revisions from quality control checks; no further updates expected as the market nears resolution.
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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