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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Watertown, Watertown International Airport (KART)

Lat: 43.99°NLon: 76.02°WElev: 325ft.

A Few Clouds

70°F

21°C

Humidity 47%
Wind Speed NW 8 mph
Barometer 30.11 in (1019.1 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 28 Aug 3:56 pm EDT
Extended Forecast for

Watertown NYSimilar City Names

  • Tonight

    Tonight: Patchy fog between midnight and 3am. Otherwise, mostly clear, with a low around 50. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Sunny, with a high near 74. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61. South wind around 7 mph.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers after 2pm. Mostly cloudy, with a high near 76. Southwest wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 60. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers between 8am and 2pm. Partly sunny, with a high near 78. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers after 2am. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 40%.

    Low: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 80. Light and variable wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

Detailed Forecast

Tonight
Patchy fog between midnight and 3am. Otherwise, mostly clear, with a low around 50. Northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 74. Light south wind becoming southwest 5 to 10 mph in the morning.
Saturday Night
Partly cloudy, with a low around 61. South wind around 7 mph.
Sunday
A slight chance of showers after 2pm. Mostly cloudy, with a high near 76. Southwest wind 7 to 10 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 60. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A slight chance of showers between 8am and 2pm. Partly sunny, with a high near 78. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 80. Light and variable wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 40%.
Tuesday Night
Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Thursday
A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 60.
Friday
Partly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown NYSimilar City Names
 43.98°N 75.91°W (Elev. 449 ft)
Last Update:
3:57 pm EDT Aug 28, 2026
Forecast Valid:
4pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation