Latest National Weather Service ensemble forecasts and model guidance from NOAA's GFS and ECMWF project Chicago's highest temperature on April 4 near the upper 50s, aligning trader consensus with 57°F or below (29% implied probability) and 58-59°F (25.5%) as frontrunners amid closely matched outcomes. This positioning reflects early April climatological normals of 54.4°F high at O'Hare, influenced by transitional spring patterns featuring variable northerly flows and frequent cloud cover that limit diurnal heating. Key differentiators include model spread—cooler GFS runs under persistent overcast skies versus slightly warmer ECMWF scenarios with potential ridging—compounded by uncertainties in boundary layer mixing and frontal timing. Daily updated forecasts from the Chicago NWS office through Friday will refine these probabilities.
Resumen experimental generado por IA con datos de Polymarket · ActualizadoHighest temperature in Chicago on April 4?
Highest temperature in Chicago on April 4?
57°F or below 38%
58-59°F 26%
62-63°F 20%
66-67°F 20%
57°F or below
30%
58-59°F
26%
60-61°F
18%
62-63°F
20%
64-65°F
19%
66-67°F
20%
68-69°F
18%
70-71°F
16%
72-73°F
15%
74-75°F
12%
76°F or higher
10%
57°F or below 38%
58-59°F 26%
62-63°F 20%
66-67°F 20%
57°F or below
30%
58-59°F
26%
60-61°F
18%
62-63°F
20%
64-65°F
19%
66-67°F
20%
68-69°F
18%
70-71°F
16%
72-73°F
15%
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.
Mercado abierto: 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...Latest National Weather Service ensemble forecasts and model guidance from NOAA's GFS and ECMWF project Chicago's highest temperature on April 4 near the upper 50s, aligning trader consensus with 57°F or below (29% implied probability) and 58-59°F (25.5%) as frontrunners amid closely matched outcomes. This positioning reflects early April climatological normals of 54.4°F high at O'Hare, influenced by transitional spring patterns featuring variable northerly flows and frequent cloud cover that limit diurnal heating. Key differentiators include model spread—cooler GFS runs under persistent overcast skies versus slightly warmer ECMWF scenarios with potential ridging—compounded by uncertainties in boundary layer mixing and frontal timing. Daily updated forecasts from the Chicago NWS office through Friday will refine these probabilities.
Resumen experimental generado por IA con datos de Polymarket · Actualizado
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