National Weather Service forecasts for Chicago O'Hare International Airport—the market's official observing site—project a high temperature near 49°F on March 28 under mostly sunny skies, with light north winds at 5-10 mph following a recent cold frontal passage and building high pressure over the Great Lakes. This aligns closely with the trader consensus favoring 48-49°F at 37.5% implied probability, as latest 00Z GFS and ECMWF model runs converge on afternoon peaks of 47-50°F amid dry continental air and reduced mixing. Current morning readings around 44°F with clearing conditions support steady warming, though minor cloud variability or subtle wind shifts could trim or boost the peak by 1-2°F. Late-March climatological normals hover around 48°F high, with historical extremes from 17°F to 74°F; hourly observations through afternoon will sharpen resolution as the market nears close.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten · AktualisiertHighest temperature in Chicago on March 28?
Highest temperature in Chicago on March 28?
48-49°F 37%
50-51°F 22%
46-47°F 21%
44-45°F 10%
$67,927 Vol.
$67,927 Vol.
43°F or below
1%
44-45°F
10%
46-47°F
21%
48-49°F
37%
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 37%
50-51°F 22%
46-47°F 21%
44-45°F 10%
$67,927 Vol.
$67,927 Vol.
43°F or below
1%
44-45°F
10%
46-47°F
21%
48-49°F
37%
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.
Markt eröffnet: 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...National Weather Service forecasts for Chicago O'Hare International Airport—the market's official observing site—project a high temperature near 49°F on March 28 under mostly sunny skies, with light north winds at 5-10 mph following a recent cold frontal passage and building high pressure over the Great Lakes. This aligns closely with the trader consensus favoring 48-49°F at 37.5% implied probability, as latest 00Z GFS and ECMWF model runs converge on afternoon peaks of 47-50°F amid dry continental air and reduced mixing. Current morning readings around 44°F with clearing conditions support steady warming, though minor cloud variability or subtle wind shifts could trim or boost the peak by 1-2°F. Late-March climatological normals hover around 48°F high, with historical extremes from 17°F to 74°F; hourly observations through afternoon will sharpen resolution as the market nears close.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten · Aktualisiert
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Vorsicht bei externen Links.
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