National Weather Service Chicago guidance and ensemble forecasts from GFS and ECMWF models place the March 29 high temperature at Chicago O'Hare International Airport near 62°F, driving trader consensus toward 60-65°F outcomes with implied probabilities tightly clustered at 24.5% for 60-61°F and 22.5% for 62-63°F. This above-normal outlook—late-March climatological average is 48°F—reflects southerly winds transporting a mild air mass under a developing upper-level ridge, enhancing afternoon solar insolation amid partly cloudy skies. Key differentiators include model spread in boundary-layer mixing efficiency and potential convective cloud formation, which could limit peaks to 60-61°F or permit 64-65°F under clearer conditions; minimal shifts in recent 12Z runs, but tonight's 00Z updates may sharpen resolution probabilities based on official O'Hare observations.
Résumé expérimental généré par IA à partir des données Polymarket · Mis à jourHighest temperature in Chicago on March 29?
Highest temperature in Chicago on March 29?
60-61°F 25%
62-63°F 23%
64-65°F 18%
58-59°F 13%
$18,362 Vol.
$18,362 Vol.
53°F ou moins
1%
54-55°F
1%
56-57°F
6%
58-59°F
13%
60-61°F
25%
62-63°F
23%
64-65°F
18%
66-67°F
6%
68-69°F
2%
70-71°F
1%
72°F or higher
1%
60-61°F 25%
62-63°F 23%
64-65°F 18%
58-59°F 13%
$18,362 Vol.
$18,362 Vol.
53°F ou moins
1%
54-55°F
1%
56-57°F
6%
58-59°F
13%
60-61°F
25%
62-63°F
23%
64-65°F
18%
66-67°F
6%
68-69°F
2%
70-71°F
1%
72°F or higher
1%
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.
Marché ouvert : Mar 25, 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...National Weather Service Chicago guidance and ensemble forecasts from GFS and ECMWF models place the March 29 high temperature at Chicago O'Hare International Airport near 62°F, driving trader consensus toward 60-65°F outcomes with implied probabilities tightly clustered at 24.5% for 60-61°F and 22.5% for 62-63°F. This above-normal outlook—late-March climatological average is 48°F—reflects southerly winds transporting a mild air mass under a developing upper-level ridge, enhancing afternoon solar insolation amid partly cloudy skies. Key differentiators include model spread in boundary-layer mixing efficiency and potential convective cloud formation, which could limit peaks to 60-61°F or permit 64-65°F under clearer conditions; minimal shifts in recent 12Z runs, but tonight's 00Z updates may sharpen resolution probabilities based on official O'Hare observations.
Résumé expérimental généré par IA à partir des données Polymarket · Mis à jour
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