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

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

69°F

21°C

Humidity 59%
Wind Speed NW 13 G 21 mph
Barometer 29.79 in (1008.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 25 Jun 1:56 am EDT
Extended Forecast for

North Great River NY

  • Overnight

    Overnight: Mostly clear, with a low around 66. Northwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Northwest wind 8 to 10 mph becoming west in the afternoon.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. Southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly after 8pm. Mostly cloudy, with a low around 68. South wind 7 to 14 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 68 °F

    T-storms
    Likely

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 82.

    High: 82 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 66. Northwest wind around 10 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 87. Northwest wind 8 to 10 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 71. Southwest wind around 11 mph, with gusts as high as 22 mph.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Showers and thunderstorms likely, mainly after 8pm. Mostly cloudy, with a low around 68. South wind 7 to 14 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Partly sunny, with a high near 80.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 82.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 64.
Monday
Sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
North Great River NY
 40.74°N 73.16°W (Elev. 7 ft)
Last Update:
12:48 am EDT Jun 25, 2024
Forecast Valid:
2am EDT Jun 25, 2024-6pm EDT Jul 1, 2024
 
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