Trader consensus on Polymarket reflects National Weather Service guidance and model ensembles projecting Chicago O'Hare's highest temperature on April 6 around 48-51°F, below the 55°F climatological normal, due to a lingering cool upper trough over the Midwest following recent severe thunderstorms and frontal passages through early April. The tight clustering among 48-53°F outcomes stems from modest spread in GFS and ECMWF runs, with shared forecasts of persistent cloud cover and light easterly winds fostering potential lake breeze cooling that could cap highs at 48-49°F, while partial clearing might permit 52-53°F. Inherent springtime uncertainty arises from timing of any diurnal mixing or shower bands; watch for NOAA's 12z model updates and NWS forecast refinements over the next 48 hours ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Chicago on April 6?
Highest temperature in Chicago on April 6?
48-49°F 23%
50-51°F 23%
52-53°F 19%
46-47°F 18%
41°F or below
1%
42-43°F
1%
44-45°F
8%
46-47°F
18%
48-49°F
23%
50-51°F
23%
52-53°F
19%
54-55°F
9%
56-57°F
8%
58-59°F
2%
60°F or higher
2%
48-49°F 23%
50-51°F 23%
52-53°F 19%
46-47°F 18%
41°F or below
1%
42-43°F
1%
44-45°F
8%
46-47°F
18%
48-49°F
23%
50-51°F
23%
52-53°F
19%
54-55°F
9%
56-57°F
8%
58-59°F
2%
60°F or higher
2%
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 2, 2026, 6:02 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...Trader consensus on Polymarket reflects National Weather Service guidance and model ensembles projecting Chicago O'Hare's highest temperature on April 6 around 48-51°F, below the 55°F climatological normal, due to a lingering cool upper trough over the Midwest following recent severe thunderstorms and frontal passages through early April. The tight clustering among 48-53°F outcomes stems from modest spread in GFS and ECMWF runs, with shared forecasts of persistent cloud cover and light easterly winds fostering potential lake breeze cooling that could cap highs at 48-49°F, while partial clearing might permit 52-53°F. Inherent springtime uncertainty arises from timing of any diurnal mixing or shower bands; watch for NOAA's 12z model updates and NWS forecast refinements over the next 48 hours ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions