The National Weather Service's latest forecast, issued early April 13, projects a high temperature of 77°F at Chicago O'Hare International Airport on April 14, driving trader consensus to 99.6% implied probability for 58°F or higher—well above the mid-April climatological normal of 58.4°F. This reflects a persistent upper-level ridge fostering summer-like warmth across the Midwest, corroborated by model consensus from GFS and ECMWF runs showing highs in the mid-70s despite scattered thunderstorms and 50-60% precipitation chances. Recent observations confirm building heat, with today's highs nearing 75°F. Realistic challenges include an unexpected influx of cooler air from Great Lakes influences or prolonged heavy cloud cover/storms capping daytime heating below 58°F, though low-level confidence remains high ahead of tomorrow's hourly updates.
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 14?
Highest temperature in Chicago on April 14?
58°F or higher 99.6%
39°F or below <1%
56-57°F <1%
46-47°F <1%
$169,273 Vol.
$169,273 Vol.
39°F or below
<1%
40-41°F
<1%
42-43°F
<1%
44-45°F
<1%
46-47°F
<1%
48-49°F
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58°F or higher
100%
58°F or higher 99.6%
39°F or below <1%
56-57°F <1%
46-47°F <1%
$169,273 Vol.
$169,273 Vol.
39°F or below
<1%
40-41°F
<1%
42-43°F
<1%
44-45°F
<1%
46-47°F
<1%
48-49°F
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58°F or higher
100%
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 12, 2026, 12:21 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...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...The National Weather Service's latest forecast, issued early April 13, projects a high temperature of 77°F at Chicago O'Hare International Airport on April 14, driving trader consensus to 99.6% implied probability for 58°F or higher—well above the mid-April climatological normal of 58.4°F. This reflects a persistent upper-level ridge fostering summer-like warmth across the Midwest, corroborated by model consensus from GFS and ECMWF runs showing highs in the mid-70s despite scattered thunderstorms and 50-60% precipitation chances. Recent observations confirm building heat, with today's highs nearing 75°F. Realistic challenges include an unexpected influx of cooler air from Great Lakes influences or prolonged heavy cloud cover/storms capping daytime heating below 58°F, though low-level confidence remains high ahead of tomorrow's hourly updates.
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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