Trader consensus on Polymarket assigns a 32.5% implied probability to a Chicago high of 48-49°F today, reflecting National Weather Service (NWS) guidance for mostly sunny skies and light north-northwest winds around 5-15 mph fostering moderate diurnal heating after yesterday's post-frontal chill of 32°F at O'Hare. High uncertainty, with probabilities spread across 46-51°F outcomes totaling over 70%, arises from divergent model runs: NWS/NAM leaning cooler near 42°F under persistent high pressure subsidence, while GFS/ECMWF ensembles hint at upper-40s potential via enhanced solar insolation if clouds thin. Lower bins (≤45°F, ~13%) hinge on strengthened northerlies or unexpected overcast; warmer ones (>51°F, <8%) require ridge amplification against late-March climatology averaging 47°F at official stations. Hourly O'Hare observations will clarify peak heating this afternoon.
Résumé expérimental généré par IA à partir des données Polymarket · Mis à jourHighest temperature in Chicago on March 28?
Highest temperature in Chicago on March 28?
48-49°F 39%
46-47°F 21%
50-51°F 21%
44-45°F 11%
$57,615 Vol.
$57,615 Vol.
43°F or below
2%
44-45°F
11%
46-47°F
21%
48-49°F
39%
50-51°F
21%
52-53°F
5%
54-55°F
1%
56-57°F
1%
58-59°F
<1%
60-61°F
<1%
62°F or higher
<1%
48-49°F 39%
46-47°F 21%
50-51°F 21%
44-45°F 11%
$57,615 Vol.
$57,615 Vol.
43°F or below
2%
44-45°F
11%
46-47°F
21%
48-49°F
39%
50-51°F
21%
52-53°F
5%
54-55°F
1%
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.
Marché ouvert : 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...Trader consensus on Polymarket assigns a 32.5% implied probability to a Chicago high of 48-49°F today, reflecting National Weather Service (NWS) guidance for mostly sunny skies and light north-northwest winds around 5-15 mph fostering moderate diurnal heating after yesterday's post-frontal chill of 32°F at O'Hare. High uncertainty, with probabilities spread across 46-51°F outcomes totaling over 70%, arises from divergent model runs: NWS/NAM leaning cooler near 42°F under persistent high pressure subsidence, while GFS/ECMWF ensembles hint at upper-40s potential via enhanced solar insolation if clouds thin. Lower bins (≤45°F, ~13%) hinge on strengthened northerlies or unexpected overcast; warmer ones (>51°F, <8%) require ridge amplification against late-March climatology averaging 47°F at official stations. Hourly O'Hare observations will clarify peak heating this afternoon.
Résumé expérimental généré par IA à partir des données Polymarket · Mis à jour
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