Recent moderation following a record-breaking Northeast heat wave has driven the tight clustering of Polymarket odds around 68–73°F for NYC’s July 9 minimum, as models converge on overnight lows in the upper 60s to low 70s after daytime highs near 80°F. Key variables include the timing of partial clearing versus lingering cloud cover and scattered showers, which modulate radiative cooling rates, plus light southerly flow that limits advection of cooler air. NWS and private guidance show modest spread due to uncertainty in boundary-layer moisture and urban heat retention, producing the observed market balance between 66–67°F and 72–73°F bins. Updated model runs and evening observations on July 8 will refine these thresholds ahead of resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in NYC on July 9?
74-75°F 94.4%
72-73°F 4.7%
70-71°F 1.9%
59°F or below <1%
$30,121 Vol.
$30,121 Vol.
59°F or below
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66-67°F
<1%
68-69°F
<1%
70-71°F
2%
72-73°F
5%
74-75°F
94%
76-77°F
<1%
78°F or higher
<1%
74-75°F 94.4%
72-73°F 4.7%
70-71°F 1.9%
59°F or below <1%
$30,121 Vol.
$30,121 Vol.
59°F or below
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66-67°F
<1%
68-69°F
<1%
70-71°F
2%
72-73°F
5%
74-75°F
94%
76-77°F
<1%
78°F or higher
<1%
The resolution source for this market will be information from Wunderground, specifically the lowest 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 7, 2026, 9:30 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 lowest 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...Recent moderation following a record-breaking Northeast heat wave has driven the tight clustering of Polymarket odds around 68–73°F for NYC’s July 9 minimum, as models converge on overnight lows in the upper 60s to low 70s after daytime highs near 80°F. Key variables include the timing of partial clearing versus lingering cloud cover and scattered showers, which modulate radiative cooling rates, plus light southerly flow that limits advection of cooler air. NWS and private guidance show modest spread due to uncertainty in boundary-layer moisture and urban heat retention, producing the observed market balance between 66–67°F and 72–73°F bins. Updated model runs and evening observations on July 8 will refine these thresholds ahead of resolution.
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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