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 >

Current conditions at

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

Fair

63°F

17°C

Humidity 81%
Wind Speed SW 3 mph
Barometer 29.85 in (1010.8 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Jun 11:56 pm EDT
Extended Forecast for

Mid Island NY

  • Overnight

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

    Low: 61 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76. Light south wind increasing to 5 to 9 mph in the morning.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 2am. Increasing clouds, with a low around 63. South wind around 5 mph.

    Low: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 83. South wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    High: 83 °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 70. West wind 8 to 16 mph.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Saturday Night

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

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 61. South wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 76. Light south wind increasing to 5 to 9 mph in the morning.
Wednesday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 63. South wind around 5 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 83. South wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. West wind 8 to 16 mph.
Juneteenth
Partly sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 67.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 66.
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 66.
Tuesday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mid Island NY
 40.9°N 72.95°W (Elev. 92 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