National Weather Service forecasts for Chicago O'Hare International Airport indicate a high temperature near 50°F on April 12, driven by persistent high-pressure ridging aloft and east-northeasterly surface winds limiting cold advection, aligning with trader consensus at 99.8% implied probability for 44°F or higher. Ensemble model guidance from NOAA's Global Forecast System and European Centre for Medium-Range Weather Forecasts shows tight agreement on mild conditions, above climatological normals of 57.6°F, following a warm early spring pattern with multiple 70°F+ days already recorded. Realistic challenges include unexpected thickening cloud cover or a faster-moving weak cold front, potentially capping highs below 44°F, though current soundings and satellite imagery suggest low likelihood ahead of final afternoon observations.
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 12?
Highest temperature in Chicago on April 12?
44°F or higher 99.8%
42-43°F <1%
38-39°F <1%
25°F or below <1%
$66,371 Vol.
$66,371 Vol.
25°F or below
<1%
26-27°F
<1%
28-29°F
<1%
30-31°F
<1%
32-33°F
<1%
34-35°F
<1%
36-37°F
<1%
38-39°F
<1%
40-41°F
<1%
42-43°F
<1%
44°F or higher
100%
44°F or higher 99.8%
42-43°F <1%
38-39°F <1%
25°F or below <1%
$66,371 Vol.
$66,371 Vol.
25°F or below
<1%
26-27°F
<1%
28-29°F
<1%
30-31°F
<1%
32-33°F
<1%
34-35°F
<1%
36-37°F
<1%
38-39°F
<1%
40-41°F
<1%
42-43°F
<1%
44°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 8, 2026, 12:08 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...National Weather Service forecasts for Chicago O'Hare International Airport indicate a high temperature near 50°F on April 12, driven by persistent high-pressure ridging aloft and east-northeasterly surface winds limiting cold advection, aligning with trader consensus at 99.8% implied probability for 44°F or higher. Ensemble model guidance from NOAA's Global Forecast System and European Centre for Medium-Range Weather Forecasts shows tight agreement on mild conditions, above climatological normals of 57.6°F, following a warm early spring pattern with multiple 70°F+ days already recorded. Realistic challenges include unexpected thickening cloud cover or a faster-moving weak cold front, potentially capping highs below 44°F, though current soundings and satellite imagery suggest low likelihood ahead of final afternoon observations.
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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