National Weather Service forecasts and consensus from GFS and ECMWF models project a high temperature near 58°F at Chicago O'Hare International Airport on April 3, fueling the market's 83.5% implied probability for 58°F or higher—well above the 54°F climatological normal. This positioning stems from the latest 00z model runs on April 1, which depict a departing low-pressure system allowing southwesterly flow aloft to advect warmer air into the region following current showers and a chilly start around 38°F. Partial cloud cover and lingering precipitation pose minor risks of capping highs in the mid-50s, explaining thin support for 56-57°F (6.3%), but trader consensus reflects high confidence in the mild upper-air pattern. Watch midday NWS updates and 12z model refreshes for potential refinements ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Chicago on April 3?
Highest temperature in Chicago on April 3?
58°F or higher 84%
56-57°F 6.3%
54-55°F 4.2%
52-53°F 2.0%
$14,580 Vol.
$14,580 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
2%
54-55°F
4%
56-57°F
6%
58°F or higher
84%
58°F or higher 84%
56-57°F 6.3%
54-55°F 4.2%
52-53°F 2.0%
$14,580 Vol.
$14,580 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
2%
54-55°F
4%
56-57°F
6%
58°F or higher
84%
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, 3:03 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 forecasts and consensus from GFS and ECMWF models project a high temperature near 58°F at Chicago O'Hare International Airport on April 3, fueling the market's 83.5% implied probability for 58°F or higher—well above the 54°F climatological normal. This positioning stems from the latest 00z model runs on April 1, which depict a departing low-pressure system allowing southwesterly flow aloft to advect warmer air into the region following current showers and a chilly start around 38°F. Partial cloud cover and lingering precipitation pose minor risks of capping highs in the mid-50s, explaining thin support for 56-57°F (6.3%), but trader consensus reflects high confidence in the mild upper-air pattern. Watch midday NWS updates and 12z model refreshes for potential refinements ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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