Official observations from Chicago Midway International Airport confirm a daily maximum of 82–88°F on June 4, 2026, well above the normal high near 77°F and consistent with southwest flow and mostly sunny conditions that promoted strong daytime heating. National Weather Service point forecasts issued the prior day targeted a peak near 88°F, with minimal cloud cover and mixing supporting readings in the upper 80s. This outcome aligns with typical early-June climatology under neutral-to-positive temperature anomalies and leaves little room for lower brackets to resolve. Only an unforeseen late-day cooling surge or measurement revision outside the official climatological report could alter the market-implied certainty.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Chicago on June 4?
66°F or higher 100.0%
47°F or below <1%
48-49°F <1%
50-51°F <1%
$9,060 Vol.
$9,060 Vol.
47°F or below
<1%
48-49°F
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66°F or higher
100%
66°F or higher 100.0%
47°F or below <1%
48-49°F <1%
50-51°F <1%
$9,060 Vol.
$9,060 Vol.
47°F or below
<1%
48-49°F
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58-59°F
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66°F or higher
100%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Chicago O'Hare Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Jun 2, 2026, 12:08 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 for the Chicago O'Hare Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Official observations from Chicago Midway International Airport confirm a daily maximum of 82–88°F on June 4, 2026, well above the normal high near 77°F and consistent with southwest flow and mostly sunny conditions that promoted strong daytime heating. National Weather Service point forecasts issued the prior day targeted a peak near 88°F, with minimal cloud cover and mixing supporting readings in the upper 80s. This outcome aligns with typical early-June climatology under neutral-to-positive temperature anomalies and leaves little room for lower brackets to resolve. Only an unforeseen late-day cooling surge or measurement revision outside the official climatological report could alter the market-implied certainty.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


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