Trader sentiment clusters around 50-51°F (30.5%) and 52-53°F (29.0%) for NYC's highest temperature at LaGuardia Airport on April 20, driven by National Weather Service forecasts showing a sharp cold front arrival after mid-April record heat exceeding 90°F. This cooler Canadian air mass, combined with gusty northeast winds and shallow boundary layer mixing, suppresses highs well below the 59°F climatological normal, as reflected in GFS and ECMWF ensemble means near 51°F. The razor-thin lead reflects model spread over exact frontal timing—earlier passage favors 50-51°F via increased cloudiness and mixing, while slight delays allow more insolation for 52-53°F. New 12Z runs and NWS advisories today could sharpen guidance ahead of resolution.
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 April 20?
Highest temperature in NYC on April 20?
50-51°F 31%
52-53°F 30%
48-49°F 18%
54-55°F 14%
45°F or below
3%
46-47°F
5%
48-49°F
18%
50-51°F
31%
52-53°F
30%
54-55°F
14%
56-57°F
4%
58-59°F
2%
60-61°F
1%
62-63°F
1%
64°F or higher
1%
50-51°F 31%
52-53°F 30%
48-49°F 18%
54-55°F 14%
45°F or below
3%
46-47°F
5%
48-49°F
18%
50-51°F
31%
52-53°F
30%
54-55°F
14%
56-57°F
4%
58-59°F
2%
60-61°F
1%
62-63°F
1%
64°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 LaGuardia Airport Station once information is finalized, 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 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.
Market Opened: Apr 18, 2026, 12:18 AM 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 by the Forecast for the LaGuardia Airport Station once information is finalized, 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 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/ny/new-york-city/KLGAResolver
0x69c47De9D...Trader sentiment clusters around 50-51°F (30.5%) and 52-53°F (29.0%) for NYC's highest temperature at LaGuardia Airport on April 20, driven by National Weather Service forecasts showing a sharp cold front arrival after mid-April record heat exceeding 90°F. This cooler Canadian air mass, combined with gusty northeast winds and shallow boundary layer mixing, suppresses highs well below the 59°F climatological normal, as reflected in GFS and ECMWF ensemble means near 51°F. The razor-thin lead reflects model spread over exact frontal timing—earlier passage favors 50-51°F via increased cloudiness and mixing, while slight delays allow more insolation for 52-53°F. New 12Z runs and NWS advisories today could sharpen guidance 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
Beware of external links.
Beware of external links.
Frequently Asked Questions