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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

East Hampton Town Airport (KJPX)

Lat: 40.96°NLon: 72.25°WElev: 55ft.

Fair

59°F

15°C

Humidity 89%
Wind Speed SW 5 mph
Barometer 29.85 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 17 Jun 12:35 am EDT
Extended Forecast for

Sag Harbor NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 61. Southwest wind 3 to 5 mph.

    Low: 61 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 74. Southeast wind 3 to 8 mph.

    High: 74 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 63. South wind around 6 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. South wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. West wind 9 to 16 mph.

    Low: 68 °F

    Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 61. Southwest wind 3 to 5 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 74. Southeast wind 3 to 8 mph.
Wednesday Night
Increasing clouds, with a low around 63. South wind around 6 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. South wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. West wind 9 to 16 mph.
Juneteenth
Mostly sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 83.
Saturday Night
Clear, with a low around 66.
Sunday
Sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 80.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 65.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sag Harbor NY
 40.99°N 72.31°W (Elev. 3 ft)
Last Update:
3:07 pm EDT Jun 16, 2026
Forecast Valid:
12am EDT Jun 17, 2026-6pm EDT Jun 23, 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