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

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

Partly Cloudy

74°F

23°C

Humidity 79%
Wind Speed SW 8 mph
Barometer 30.12 in (1019.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 17 Sep 5:56 pm EDT
Extended Forecast for

Middle Island NY

  • Tonight

    Tonight: A 40 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 67. South wind 6 to 9 mph.

    Low: 67 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 79. North wind 7 to 10 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. Northeast wind 7 to 10 mph.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 68. Northeast wind 7 to 9 mph.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 56. Southeast wind 3 to 5 mph.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 70 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers, mainly before 2am. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Monday

    Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 40 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 67. South wind 6 to 9 mph.
Friday
Sunny, with a high near 79. North wind 7 to 10 mph.
Friday Night
Partly cloudy, with a low around 55. Northeast wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 68. Northeast wind 7 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 56. Southeast wind 3 to 5 mph.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Showers, mainly before 2am. Low around 57. Chance of precipitation is 80%.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 68.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 55.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 62. Breezy.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 53.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Middle Island NY
 40.87°N 72.95°W (Elev. 125 ft)
Last Update:
2:41 pm EDT Sep 17, 2026
Forecast Valid:
6pm EDT Sep 17, 2026-6pm EDT Sep 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