Latest ensemble forecasts from NOAA's GFS and ECMWF models project Chicago's highest temperature on March 28 at 50-53°F, fueling tight trader consensus with 50-51°F (26%) and 52-53°F (24.5%) leading closely. Key differentiators include minor ensemble spreads: GFS favors upper 50s via stronger southerly winds enhancing boundary layer mixing and afternoon insolation under partial cloud cover, while ECMWF leans cooler with subtle lake breeze reinforcement from Lake Michigan tempering peaks. Recent O'Hare observations show a warm anomaly this week (+3°F above March norms), but uncertainty lingers from a potential weak front's timing, per NWS Chicago updates—watch the 12z runs for shifts before evening resolution. Historical March 28 highs average 48°F, underscoring the mild bias.
Resumo experimental gerado por IA com dados do Polymarket · AtualizadoHighest temperature in Chicago on March 28?
Highest temperature in Chicago on March 28?
50-51°F 26%
52-53°F 25%
48-49°F 17%
54-55°F 17%
43°F or below
6%
44-45°F
8%
46-47°F
16%
48-49°F
18%
50-51°F
26%
52-53°F
25%
54-55°F
13%
56-57°F
5%
58-59°F
2%
60-61°F
2%
62°F or higher
1%
50-51°F 26%
52-53°F 25%
48-49°F 17%
54-55°F 17%
43°F or below
6%
44-45°F
8%
46-47°F
16%
48-49°F
18%
50-51°F
26%
52-53°F
25%
54-55°F
13%
56-57°F
5%
58-59°F
2%
60-61°F
2%
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 Aberto: Mar 24, 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...Latest ensemble forecasts from NOAA's GFS and ECMWF models project Chicago's highest temperature on March 28 at 50-53°F, fueling tight trader consensus with 50-51°F (26%) and 52-53°F (24.5%) leading closely. Key differentiators include minor ensemble spreads: GFS favors upper 50s via stronger southerly winds enhancing boundary layer mixing and afternoon insolation under partial cloud cover, while ECMWF leans cooler with subtle lake breeze reinforcement from Lake Michigan tempering peaks. Recent O'Hare observations show a warm anomaly this week (+3°F above March norms), but uncertainty lingers from a potential weak front's timing, per NWS Chicago updates—watch the 12z runs for shifts before evening resolution. Historical March 28 highs average 48°F, underscoring the mild bias.
Resumo experimental gerado por IA com dados do Polymarket · Atualizado
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