Trader consensus on Polymarket reflects high uncertainty in medium-range forecasts for Chicago O'Hare's highest temperature on April 4, with closely matched implied probabilities for 57°F or below (29%) and 58-59°F (25.5%), driven by the NOAA Climate Prediction Center's latest 6-10 day outlook (updated March 29) showing equal chances of near-normal temperatures in the Midwest amid transitioning ENSO-neutral conditions. Climatological normals at O'Hare indicate a 54.4°F high, but ensemble spreads in GFS and ECMWF models highlight differentiating factors: persistent cloud cover and precipitation risks capping highs near 58°F in cooler members, versus potential warm advection to 70°F+ or 76°F+ (19.5%) if ridging amplifies under clearer skies. Daily 00Z/12Z model runs and NWS updates will clarify jet stream positioning and frontal timing before resolution.
Résumé expérimental généré par IA à partir des données Polymarket · Mis à jourHighest temperature in Chicago on April 4?
Highest temperature in Chicago on April 4?
57°F or below 38%
58-59°F 25%
64-65°F 18%
70-71°F 14%
57°F or below
29%
58-59°F
25%
60-61°F
9%
62-63°F
9%
64-65°F
18%
66-67°F
8%
68-69°F
8%
70-71°F
14%
72-73°F
14%
74-75°F
12%
76°F or higher
10%
57°F or below 38%
58-59°F 25%
64-65°F 18%
70-71°F 14%
57°F or below
29%
58-59°F
25%
60-61°F
9%
62-63°F
9%
64-65°F
18%
66-67°F
8%
68-69°F
8%
70-71°F
14%
72-73°F
14%
74-75°F
12%
76°F or higher
10%
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 29, 2026, 4:52 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...Trader consensus on Polymarket reflects high uncertainty in medium-range forecasts for Chicago O'Hare's highest temperature on April 4, with closely matched implied probabilities for 57°F or below (29%) and 58-59°F (25.5%), driven by the NOAA Climate Prediction Center's latest 6-10 day outlook (updated March 29) showing equal chances of near-normal temperatures in the Midwest amid transitioning ENSO-neutral conditions. Climatological normals at O'Hare indicate a 54.4°F high, but ensemble spreads in GFS and ECMWF models highlight differentiating factors: persistent cloud cover and precipitation risks capping highs near 58°F in cooler members, versus potential warm advection to 70°F+ or 76°F+ (19.5%) if ridging amplifies under clearer skies. Daily 00Z/12Z model runs and NWS updates will clarify jet stream positioning and frontal timing before resolution.
Résumé expérimental généré par IA à partir des données Polymarket · Mis à jour
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