Official observations from primary reporting stations such as LaGuardia Airport confirmed a daily maximum of 84–85°F for New York City on July 31, aligning with National Weather Service data and driving the market-implied odds to 100% on that narrow range. A cooler air mass following earlier July heat kept temperatures below typical midsummer peaks near 85–88°F, consistent with model guidance showing limited warming and moderate humidity levels. This outcome matches climatological norms for late July under neutral ENSO conditions. Only an unusually large post-event adjustment from the official station or a disputed data quality flag could realistically shift resolution, though such revisions remain rare once preliminary readings are validated.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in NYC on July 31?
84-85°F 100.0%
$72,237 Vol.
$72,237 Vol.
84-85°F
100%
84-85°F 100.0%
$72,237 Vol.
$72,237 Vol.
84-85°F
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 LaGuardia Airport Station, available here: https://www.wunderground.com/history/daily/us/ny/new-york-city/KLGA.
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: Jul 29, 2026, 10:02 PM ET
Resolution Source
https://www.wunderground.com/history/daily/us/ny/new-york-city/KLGAResolver
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 LaGuardia Airport Station, available here: https://www.wunderground.com/history/daily/us/ny/new-york-city/KLGA.
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/ny/new-york-city/KLGAResolver
0x69c47De9D...Official observations from primary reporting stations such as LaGuardia Airport confirmed a daily maximum of 84–85°F for New York City on July 31, aligning with National Weather Service data and driving the market-implied odds to 100% on that narrow range. A cooler air mass following earlier July heat kept temperatures below typical midsummer peaks near 85–88°F, consistent with model guidance showing limited warming and moderate humidity levels. This outcome matches climatological norms for late July under neutral ENSO conditions. Only an unusually large post-event adjustment from the official station or a disputed data quality flag could realistically shift resolution, though such revisions remain rare once preliminary readings are validated.
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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