**National Weather Service forecasts indicate Chicago's high temperature at O'Hare International Airport will reach near 67°F today under partly sunny skies and breezy southerly winds of 15-20 mph, driving trader consensus to 100% implied probability for 50°F or higher.** This positioning aligns with NOAA model consensus showing a warming trend from recent cold snaps, with surface observations already climbing into the mid-50s by mid-morning and no frontal boundaries expected to interrupt flow. April 8 climatological normals sit at 56°F, providing ample buffer above the threshold. Realistic challenges—a sudden increase in cloud cover, stalled low-pressure system, or erroneous model outlier—remain low probability given synchronized short-range guidance from ECMWF and GFS ensembles, with hourly updates available through evening.
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 8?
Highest temperature in Chicago on April 8?
50°F or higher 100.0%
31°F or below <1%
32-33°F <1%
34-35°F <1%
$88,235 Vol.
$88,235 Vol.
31°F or below
No
32-33°F
No
34-35°F
No
36-37°F
No
38-39°F
No
40-41°F
No
42-43°F
No
44-45°F
No
46-47°F
No
48-49°F
No
50°F or higher
Yes
50°F or higher 100.0%
31°F or below <1%
32-33°F <1%
34-35°F <1%
$88,235 Vol.
$88,235 Vol.
31°F or below
No
32-33°F
No
34-35°F
No
36-37°F
No
38-39°F
No
40-41°F
No
42-43°F
No
44-45°F
No
46-47°F
No
48-49°F
No
50°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 4, 2026, 12:11 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 indicate Chicago's high temperature at O'Hare International Airport will reach near 67°F today under partly sunny skies and breezy southerly winds of 15-20 mph, driving trader consensus to 100% implied probability for 50°F or higher.** This positioning aligns with NOAA model consensus showing a warming trend from recent cold snaps, with surface observations already climbing into the mid-50s by mid-morning and no frontal boundaries expected to interrupt flow. April 8 climatological normals sit at 56°F, providing ample buffer above the threshold. Realistic challenges—a sudden increase in cloud cover, stalled low-pressure system, or erroneous model outlier—remain low probability given synchronized short-range guidance from ECMWF and GFS ensembles, with hourly updates available through evening.
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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