Monsoon and Heavy Rain This Weekend

The active monsoon is expected to continue into next week from the Four Corners region and Desert Southwest to the central Rockies. This rainfall may produce flash flooding and debris flows, especially near recent burn scar areas. Locally heavy rain is likely near much of the Gulf Coast this weekend due to a stalled front and weak tropical disturbance. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Partly Cloudy

76°F

24°C

Humidity 40%
Wind Speed NE 8 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 13 Aug 11:56 am EDT
Extended Forecast for

Stony Brook NY

  • This
    Afternoon

    This Afternoon: Sunny, with a high near 80. Northwest wind 3 to 7 mph.

    Sunny

    High: 80 °F

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light and variable wind.

    Mostly Clear

    Low: 61 °F

  • Sunday

    Sunday: Sunny, with a high near 83. Light and variable wind becoming east around 5 mph in the afternoon.

    Sunny

    High: 83 °F

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 68. South wind 5 to 7 mph becoming calm  after midnight.

    Mostly Cloudy

    Low: 68 °F

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 81. Light southeast wind becoming east 5 to 10 mph in the morning.

    Partly Sunny
    then Chance
    Showers

    High: 81 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 66.

    Chance
    Showers

    Low: 66 °F

  • Tuesday

    Tuesday: A 40 percent chance of showers.  Mostly cloudy, with a high near 78.

    Chance
    Showers

    High: 78 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 65.

    Chance
    Showers

    Low: 65 °F

  • Wednesday

    Wednesday: A 30 percent chance of showers.  Partly sunny, with a high near 80.

    Chance
    Showers

    High: 80 °F

Detailed Forecast

This Afternoon
Sunny, with a high near 80. Northwest wind 3 to 7 mph.
Tonight
Mostly clear, with a low around 61. Light and variable wind.
Sunday
Sunny, with a high near 83. Light and variable wind becoming east around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 68. South wind 5 to 7 mph becoming calm after midnight.
Monday
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Light southeast wind becoming east 5 to 10 mph in the morning.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 78.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 65.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Stony Brook NY
 40.92°N 73.12°W (Elev. 112 ft)
10:41 am EDT Aug 13, 2022
12pm EDT Aug 13, 2022-6pm EDT Aug 19, 2022
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database