National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant Heat Today Through Tuesday

Hot temperatures and high humidity will be present today through Tuesday, and warm overnight lows will provide little relief. Heat indices will reach 85-100 this afternoon, 95-110 on Monday and 90-105 on Tuesday. Please follow proper heat safety protocols. Stay hydrated, take breaks in air-conditioned rooms if possible, seek shade often, and check up on relatives and neighbors. Read More >

Hazardous Weather Conditions

Current conditions at

Plattsburgh International Airport (KPBG)

Lat: 44.65°NLon: 73.47°WElev: 236ft.

Partly Cloudy

68°F

20°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1015.9 mb)
Dewpoint 66°F (19°C)
Visibility 9.00 mi
Last update 23 Jun 2:53 am EDT
Extended Forecast for

Grand Isle VT

Extreme Heat Warning June 23, 11:00am until June 24, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 95. Heat index values as high as 102. South wind 5 to 9 mph.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. Southwest wind 7 to 9 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms between 3pm and 5pm. Sunny and hot, with a high near 93. Heat index values as high as 98. South wind 9 to 11 mph becoming northwest in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67. West wind around 6 mph.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 79. West wind 9 to 11 mph becoming north in the afternoon.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. Light north wind.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 78. North wind around 6 mph.

    High: 78 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 60. Light northeast wind.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 67. Calm wind.
Monday
Mostly sunny and hot, with a high near 95. Heat index values as high as 102. South wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 75. Southwest wind 7 to 9 mph.
Tuesday
A chance of showers and thunderstorms between 3pm and 5pm. Sunny and hot, with a high near 93. Heat index values as high as 98. South wind 9 to 11 mph becoming northwest in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Partly cloudy, with a low around 67. West wind around 6 mph.
Wednesday
Sunny, with a high near 79. West wind 9 to 11 mph becoming north in the afternoon.
Wednesday Night
Partly cloudy, with a low around 61. Light north wind.
Thursday
Partly sunny, with a high near 78. North wind around 6 mph.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 60. Light northeast wind.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 75. South wind 6 to 8 mph.
Friday Night
Showers likely. Mostly cloudy, with a low around 61. South wind around 8 mph. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76. South wind around 10 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind around 7 mph.
Sunday
Partly sunny, with a high near 80. South wind around 8 mph.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle VT
 44.72°N 73.3°W (Elev. 125 ft)
Last Update:
3:11 am EDT Jun 23, 2025
Forecast Valid:
3am EDT Jun 23, 2025-6pm EDT Jun 29, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation