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Greater Cornwall WX Alerts
Last Update: Mon Jun 29 2026 03:30:00 EDT
THERE IS 1 ACTIVE ALERT!
wx.cornwallny.gov

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warning EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH FRIDAY EVENING
* WHAT...Dangerously hot conditions with heat index values between 105 to 110 possible. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From Wednesday afternoon through Friday evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Coastal areas across southeast CT and Long Island will likely see peak heat index values closer to 100 to 105. There is potential for the dangerous heat to continue into Saturday.
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Current Conditions for Greater Cornwall
Current Conditions - Cornwall-on-Hudson
Overnight
63 °F : 1 mph W
Elevation: 696.03ft
Current Conditions - Cornwall / Firthcliffe
Overnight
62 °F : 2 mph W
Elevation: 1096.05ft
Current Conditions - Mountainville
Overnight
61 °F : 1 mph W
Elevation: 1001.05ft
12 Hour Zone Forecast Orange County (NYZ067)
Patchy Fog
62 °F : 2 mph NW
Patchy Fog then Sunny
84 °F : 5 mph NE
Weather Data Sources
Official Weather & Environmental Intelligence
Weather@Cornwall NY compiles official weather, environmental, and public safety information for the Greater Cornwall community.
Supporting data sources
These sources support local awareness, preparedness, response, public information, and environmental monitoring.
National Weather Service
Official watches, warnings, advisories, forecasts, and weather alerts for Orange County and the Greater Cornwall area.
NOAA / NWS Radar
Regional radar products supporting awareness of precipitation, storms, and changing weather conditions.
AirNow / EPA
Official air quality information and public health guidance supporting local air quality awareness.
NYS Mesonet
Regional weather camera and environmental monitoring resources supporting local situational awareness.
Cornwall OEM
Local public safety coordination, readiness information, and community emergency management awareness.
Weather@Cornwall NY
Local compilation and communication of weather and environmental information for the Greater Cornwall community.