Severe Weather Possible from the Central Plains to the Northeast; Building Heat in the West; Fire Weather Concerns for the Southwest

Severe thunderstorms will be possible from the central Plains to the Mid-Atlantic and Northeast on Monday. Hazardous heat will linger across the southern U.S. and build across the West through mid-week. Hot and dry conditions will fuel fire weather concerns for Interior Alaska and the Four Corners region through Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown International Airport (KART)

Lat: 43.99° N Lon: 76.02° W Elev: 325 ft.

Fair

53°F

12°C

Humidity 89%
Wind Speed Calm
Barometer 29.99 in (1015.3 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 22 Jun 3:56 am EDT
Detailed forecast for

Jefferson County

Today
A chance of showers late this morning. Rain this afternoon. Highs ranging from the mid 60s on the tug hill to around 70 across the lower elevations. Light south winds. Chance of rain 90 percent.
Tonight
Mostly cloudy. A chance of showers in the evening. Lows ranging from the mid 50s across the tug hill to the upper 50s along the lake ontario shore. Light northeast winds. Chance of rain 40 percent.
Tuesday
Becoming mostly sunny. Highs ranging from around 70 on the tug hill to the mid 70s across the lower elevations. Light winds, becoming west 5 to 10 mph.
Tuesday Night
Partly cloudy. Lows ranging from the mid 50s across the tug hill to the upper 50s along the lake ontario shore. Light winds.
Wednesday
Sunny. Highs ranging from around 70 on the tug hill to the mid 70s across the lower elevations. Light winds, becoming west 5 to 10 mph.
Wednesday Night
Mostly cloudy. Lows in the upper 50s.
Thursday
Showers likely. Highs in the upper 70s. Chance of rain 60 percent.
Thursday Night
Showers with a chance of thunderstorms. Lows in the upper 50s. Chance of rain 80 percent.
Friday
Showers likely. Highs in the mid 70s. Chance of rain 60 percent.
Friday Night
Partly cloudy with a 40 percent chance of showers. Lows in the upper 50s.
Saturday
Partly sunny with a 40 percent chance of showers. Highs in the mid 70s.
Saturday Night
Partly cloudy with a 40 percent chance of showers. Lows in the upper 50s.
Sunday
Mostly sunny. Highs in the upper 70s.



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400 AM EDT Mon Jun 22 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database