Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Watertown, Watertown International Airport (KART)

Lat: 43.99°NLon: 76.02°WElev: 325ft.

Fair

64°F

18°C

Humidity 78%
Wind Speed S 3 mph
Barometer 29.86 in (1010.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 19 Aug 2:56 am EDT
Extended Forecast for

5 Miles NE Cape Vincent NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 63. South wind around 7 mph.

    Low: 63 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm.  High near 74. Southwest wind 6 to 13 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57. West wind 3 to 6 mph.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 74. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. West wind around 5 mph becoming calm  in the evening.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 74. Light northeast wind.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. Light northeast wind.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80. South wind 3 to 8 mph.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am.  Low around 59. Chance of precipitation is 90%.

    Low: 59 °F

    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 63. South wind around 7 mph.
Wednesday
Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 74. Southwest wind 6 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Partly cloudy, with a low around 57. West wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 74. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 54. West wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 74. Light northeast wind.
Friday Night
Partly cloudy, with a low around 58. Light northeast wind.
Saturday
Mostly sunny, with a high near 80. South wind 3 to 8 mph.
Saturday Night
A chance of thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 59. Chance of precipitation is 90%.
Sunday
Showers, with thunderstorms also possible after 2pm. High near 71. Chance of precipitation is 80%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Monday
A chance of showers. Partly sunny, with a high near 70. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NE Cape Vincent NY
 44.16°N 76.24°W (Elev. 305 ft)
2:33 am EDT Aug 19, 2026
3am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
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Additional Resources

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