Trader consensus on Polymarket tilts toward a high of 42-43°F (20.5% implied probability) for Chicago's O'Hare on March 27, driven by the latest NWS forecast and ensemble models like GFS and ECMWF converging on 40-43°F amid a post-frontal cool air mass. A recent cold surge from Canada, reinforced by northerly winds at 10-15 mph, caps diurnal heating below the 45°F March average, with persistent stratus clouds reducing insolation by up to 30%. Differentiating the tight race with 40-41°F (18.0%) hinges on afternoon boundary layer evolution: southerly wind shifts or cloud breaks could nudge peaks to 43°F, while sustained northwest flow favors 40-41°F, as seen in analogous 2023 setups. Evening model runs loom as key catalysts.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten · AktualisiertHighest temperature in Chicago on March 27?
Highest temperature in Chicago on March 27?
42-43°F 21%
40-41°F 19%
38-39°F 15%
44-45°F 11.1%
33°F or below
3%
34-35°F
4%
36-37°F
9%
38-39°F
15%
40-41°F
19%
42-43°F
21%
44-45°F
11%
46-47°F
11%
48-49°F
6%
50-51°F
4%
52°F or higher
2%
42-43°F 21%
40-41°F 19%
38-39°F 15%
44-45°F 11.1%
33°F or below
3%
34-35°F
4%
36-37°F
9%
38-39°F
15%
40-41°F
19%
42-43°F
21%
44-45°F
11%
46-47°F
11%
48-49°F
6%
50-51°F
4%
52°F or higher
2%
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 23, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Trader consensus on Polymarket tilts toward a high of 42-43°F (20.5% implied probability) for Chicago's O'Hare on March 27, driven by the latest NWS forecast and ensemble models like GFS and ECMWF converging on 40-43°F amid a post-frontal cool air mass. A recent cold surge from Canada, reinforced by northerly winds at 10-15 mph, caps diurnal heating below the 45°F March average, with persistent stratus clouds reducing insolation by up to 30%. Differentiating the tight race with 40-41°F (18.0%) hinges on afternoon boundary layer evolution: southerly wind shifts or cloud breaks could nudge peaks to 43°F, while sustained northwest flow favors 40-41°F, as seen in analogous 2023 setups. Evening model runs loom as key catalysts.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten · Aktualisiert
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