National Weather Service forecasts for Chicago O'Hare International Airport, the market's resolution station, project a daytime high near 50-56°F today under mostly sunny to increasing clouds with light east winds around 5-10 mph, driving the 99.6% market-implied probability for 46°F or higher. This positioning stems from consistent short-range model consensus—including GFS and ECMWF ensembles—showing high pressure ridging aloft favoring diurnal heating after overnight lows of 35-37°F matched expectations, with dewpoints in the 30s supporting mild spring conditions above April 11 normals of 57°F high. Trader consensus reflects real-money alignment with official guidance issued early this morning. Realistic challenges include unexpected persistent cloud cover or a sharp northeast wind shift capping peaks below 46°F, though current upper-air patterns render this improbable; watch afternoon forecast updates for refinements.
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 11?
Highest temperature in Chicago on April 11?
46°F or higher 99.6%
42-43°F <1%
44-45°F <1%
38-39°F <1%
$118,910 Vol.
$118,910 Vol.
38-39°F
<1%
40-41°F
<1%
42-43°F
<1%
44-45°F
<1%
46°F or higher
100%
46°F or higher 99.6%
42-43°F <1%
44-45°F <1%
38-39°F <1%
$118,910 Vol.
$118,910 Vol.
38-39°F
<1%
40-41°F
<1%
42-43°F
<1%
44-45°F
<1%
46°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 7, 2026, 12:11 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, the market's resolution station, project a daytime high near 50-56°F today under mostly sunny to increasing clouds with light east winds around 5-10 mph, driving the 99.6% market-implied probability for 46°F or higher. This positioning stems from consistent short-range model consensus—including GFS and ECMWF ensembles—showing high pressure ridging aloft favoring diurnal heating after overnight lows of 35-37°F matched expectations, with dewpoints in the 30s supporting mild spring conditions above April 11 normals of 57°F high. Trader consensus reflects real-money alignment with official guidance issued early this morning. Realistic challenges include unexpected persistent cloud cover or a sharp northeast wind shift capping peaks below 46°F, though current upper-air patterns render this improbable; watch afternoon forecast updates for refinements.
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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