National Weather Service guidance and ensemble model consensus from NOAA's GFS and ECMWF project Chicago O'Hare's high temperature on April 2 exceeding 48°F—aligning with the 98.3% market-implied probability for this outcome amid a mild spring pattern featuring high-pressure ridging and southerly winds. Recent overnight forecast updates reinforce this, showing mean highs around 52-55°F across model members, consistent with early April climatological normals of 54°F and recent days' warming trend. Trader sentiment reflects the high accuracy of 24-hour temperature forecasts, backed by real-money positions. Realistic challenges include unexpected cold air advection from a fast-moving front or marine-layer clouds, though steering patterns currently favor persistence. Watch NWS advisories for any 12Z model shifts.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Chicago on April 2?
Highest temperature in Chicago on April 2?
48°F or higher 98.3%
46-47°F <1%
42-43°F <1%
44-45°F <1%
$72,777 Vol.
$72,777 Vol.
29°F or below
<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%
44-45°F
<1%
46-47°F
1%
48°F or higher
98%
48°F or higher 98.3%
46-47°F <1%
42-43°F <1%
44-45°F <1%
$72,777 Vol.
$72,777 Vol.
29°F or below
<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%
44-45°F
<1%
46-47°F
1%
48°F or higher
98%
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: Mar 29, 2026, 2:22 PM 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 guidance and ensemble model consensus from NOAA's GFS and ECMWF project Chicago O'Hare's high temperature on April 2 exceeding 48°F—aligning with the 98.3% market-implied probability for this outcome amid a mild spring pattern featuring high-pressure ridging and southerly winds. Recent overnight forecast updates reinforce this, showing mean highs around 52-55°F across model members, consistent with early April climatological normals of 54°F and recent days' warming trend. Trader sentiment reflects the high accuracy of 24-hour temperature forecasts, backed by real-money positions. Realistic challenges include unexpected cold air advection from a fast-moving front or marine-layer clouds, though steering patterns currently favor persistence. Watch NWS advisories for any 12Z model shifts.
Experimental AI-generated summary referencing Polymarket data · Updated
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