The latest National Weather Service guidance and consensus from GFS and ECMWF model ensembles position Chicago's highest temperature on March 28 at 48-49°F (35.5% market-implied probability), driven by a stable high-pressure ridge over the Midwest delivering mostly sunny skies, light northwesterly winds around 5-10 mph, and sufficient insolation for slight warming above the late-March climatological normal of 46°F at O'Hare International Airport. Recent 00Z/12Z runs show tight clustering in the upper 40s, a moderation from early March's anomalous warmth peaking at 77°F on March 21 amid variable spring patterns influenced by lingering Arctic air masses. Probabilities spread to 46-47°F (22%) and 50-51°F (21%) reflect uncertainty in afternoon cloud development or boundary layer mixing; hourly observations through evening will determine the official high, with any 18Z model shift potentially adjusting trader positions.
Resumen experimental generado por IA con datos de Polymarket · ActualizadoHighest temperature in Chicago on March 28?
Highest temperature in Chicago on March 28?
48-49°F 36%
46-47°F 22%
50-51°F 22%
44-45°F 11%
$66,863 Vol.
$66,863 Vol.
43°F or below
2%
44-45°F
11%
46-47°F
22%
48-49°F
36%
50-51°F
22%
52-53°F
6%
54-55°F
2%
56-57°F
1%
58-59°F
<1%
60-61°F
<1%
62°F or higher
1%
48-49°F 36%
46-47°F 22%
50-51°F 22%
44-45°F 11%
$66,863 Vol.
$66,863 Vol.
43°F or below
2%
44-45°F
11%
46-47°F
22%
48-49°F
36%
50-51°F
22%
52-53°F
6%
54-55°F
2%
56-57°F
1%
58-59°F
<1%
60-61°F
<1%
62°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.
Mercado abierto: Mar 24, 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...The latest National Weather Service guidance and consensus from GFS and ECMWF model ensembles position Chicago's highest temperature on March 28 at 48-49°F (35.5% market-implied probability), driven by a stable high-pressure ridge over the Midwest delivering mostly sunny skies, light northwesterly winds around 5-10 mph, and sufficient insolation for slight warming above the late-March climatological normal of 46°F at O'Hare International Airport. Recent 00Z/12Z runs show tight clustering in the upper 40s, a moderation from early March's anomalous warmth peaking at 77°F on March 21 amid variable spring patterns influenced by lingering Arctic air masses. Probabilities spread to 46-47°F (22%) and 50-51°F (21%) reflect uncertainty in afternoon cloud development or boundary layer mixing; hourly observations through evening will determine the official high, with any 18Z model shift potentially adjusting trader positions.
Resumen experimental generado por IA con datos de Polymarket · Actualizado
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Cuidado con los enlaces externos.
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