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

Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown International Airport (KART)

Lat: 43.99°NLon: 76.02°WElev: 325ft.

A Few Clouds

82°F

28°C

Humidity 58%
Wind Speed SW 5 mph
Barometer 30.00 in (1015.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 21 Jun 4:56 pm EDT
Extended Forecast for

4 Miles S Watertown International Airport NY

Heat Advisory June 22, 12:00pm until June 24, 06:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 71. South wind 9 to 17 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms then
    Heavy Rain

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 10am. Some of the storms could produce heavy rainfall. Cloudy through mid morning, then gradual clearing, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Heavy Rain
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. Southwest wind around 6 mph.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 89. Heat index values as high as 96. Southwest wind 7 to 11 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. Southwest wind around 8 mph.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 87. Southwest wind 8 to 13 mph. Chance of precipitation is 20%.

    High: 87 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67. Southwest wind around 6 mph becoming light and variable in the evening.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 82. North wind around 7 mph.

    High: 82 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 71. South wind 9 to 17 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely, mainly before 10am. Some of the storms could produce heavy rainfall. Cloudy through mid morning, then gradual clearing, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 72. Southwest wind around 6 mph.
Monday
Sunny, with a high near 89. Heat index values as high as 96. Southwest wind 7 to 11 mph.
Monday Night
Mostly clear, with a low around 72. Southwest wind around 8 mph.
Tuesday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 87. Southwest wind 8 to 13 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 67. Southwest wind around 6 mph becoming light and variable in the evening.
Wednesday
Partly sunny, with a high near 82. North wind around 7 mph.
Wednesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Saturday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Watertown International Airport NY
 43.95°N 76.01°W (Elev. 390 ft)
Last Update:
4:36 pm EDT Jun 21, 2025
Forecast Valid:
5pm EDT Jun 21, 2025-6pm EDT Jun 28, 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