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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown International Airport (KART)

Lat: 43.99°NLon: 76.02°WElev: 325ft.

Partly Cloudy

74°F

23°C

Humidity 54%
Wind Speed W 12 mph
Barometer 29.68 in (1004.5 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 17 Jun 3:56 pm EDT
Extended Forecast for

Sackets Harbor NY

Wind Advisory June 18, 06:00am until June 18, 08:00pm
Lakeshore Flood Warning June 18, 02:00pm until June 19, 08:00pm
Click here for hazard details and duration
Wind Advisory
Lakeshore Flood Warning

  • This Afternoon

    This Afternoon: A slight chance of showers. Partly sunny, with a high near 72. Southwest wind around 9 mph. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Showers, with thunderstorms also possible after 5am. Low around 62. Light southeast wind increasing to 11 to 16 mph in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Slight Chance
    Showers then
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 70. Breezy, with a southwest wind 26 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Breezy.
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. Breezy, with a southwest wind 21 to 23 mph, with gusts as high as 36 mph.

    Low: 57 °F

    Mostly Cloudy
    and Breezy

  • Juneteenth

    Juneteenth: A slight chance of showers after 2pm. Mostly sunny, with a high near 67. Breezy, with a southwest wind 21 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.

    High: 67 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers. Mostly cloudy, with a low around 56. Breezy, with a west wind 16 to 23 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers and
    Breezy

  • Saturday

    Saturday: A chance of showers after 2pm. Partly sunny, with a high near 68. Southwest wind 15 to 17 mph. Chance of precipitation is 30%.

    High: 68 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 56. West wind 6 to 10 mph. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of showers. Partly sunny, with a high near 72. Southwest wind around 9 mph. Chance of precipitation is 20%.
Tonight
Showers, with thunderstorms also possible after 5am. Low around 62. Light southeast wind increasing to 11 to 16 mph in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 70. Breezy, with a southwest wind 26 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Mostly cloudy, with a low around 57. Breezy, with a southwest wind 21 to 23 mph, with gusts as high as 36 mph.
Juneteenth
A slight chance of showers after 2pm. Mostly sunny, with a high near 67. Breezy, with a southwest wind 21 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 56. Breezy, with a west wind 16 to 23 mph. Chance of precipitation is 20%.
Saturday
A chance of showers after 2pm. Partly sunny, with a high near 68. Southwest wind 15 to 17 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 56. West wind 6 to 10 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Mostly cloudy, with a low around 56.
Monday
A chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sackets Harbor NY
 43.94°N 76.13°W (Elev. 246 ft)
Last Update:
3:57 pm EDT Jun 17, 2026
Forecast Valid:
4pm EDT Jun 17, 2026-6pm EDT Jun 24, 2026
 
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