Trader consensus overwhelmingly favors a high temperature of 70-71°F in Chicago on March 20, driven by converging forecasts from NOAA's Global Forecast System (GFS), European Centre for Medium-Range Weather Forecasts (ECMWF) ensemble models, and National Weather Service (NWS) guidance, all projecting daytime highs in that narrow band amid mild southerly flow and partial sunshine. Verified observational data from O'Hare Airport shows recent March norms around 45-50°F, but current synoptic patterns—a weakening high-pressure ridge and incoming warm front—support this warmer outlier without exceeding it. Realistic challenges include an unanticipated surge in downsloping winds off Lake Michigan or model underestimation of boundary-layer mixing, potentially pushing temps toward 72°F+, though low-confidence signals limit such risks to under 1%.
Résumé expérimental généré par IA à partir des données Polymarket · Mis à jourHighest temperature in Chicago on March 20?
Highest temperature in Chicago on March 20?
70-71°F 99.9%
72-73°F <1%
74-75°F <1%
76-77°F <1%
$255,140 Vol.
$255,140 Vol.
70-71°F
100%
72-73°F
<1%
74-75°F
<1%
76-77°F
<1%
78°F or higher
<1%
70-71°F 99.9%
72-73°F <1%
74-75°F <1%
76-77°F <1%
$255,140 Vol.
$255,140 Vol.
70-71°F
100%
72-73°F
<1%
74-75°F
<1%
76-77°F
<1%
78°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.
Marché ouvert : Mar 16, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Résultat proposé: No
Aucune contestation
Résultat final: No
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Trader consensus overwhelmingly favors a high temperature of 70-71°F in Chicago on March 20, driven by converging forecasts from NOAA's Global Forecast System (GFS), European Centre for Medium-Range Weather Forecasts (ECMWF) ensemble models, and National Weather Service (NWS) guidance, all projecting daytime highs in that narrow band amid mild southerly flow and partial sunshine. Verified observational data from O'Hare Airport shows recent March norms around 45-50°F, but current synoptic patterns—a weakening high-pressure ridge and incoming warm front—support this warmer outlier without exceeding it. Realistic challenges include an unanticipated surge in downsloping winds off Lake Michigan or model underestimation of boundary-layer mixing, potentially pushing temps toward 72°F+, though low-confidence signals limit such risks to under 1%.
Résumé expérimental généré par IA à partir des données Polymarket · Mis à jour
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