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

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fog/Mist

48°F

9°C

Humidity 100%
Wind Speed S 8 mph
Barometer 29.91 in (1012.8 mb)
Dewpoint 48°F (9°C)
Visibility 1.00 mi
Wind Chill44°F (7°C)
Last update 5 Apr 6:55 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Today

    Today: Rain and thunderstorms likely, then rain and possibly a thunderstorm after 2pm. High near 51. Windy, with a southwest wind 20 to 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 51 °F

    Rain Likely
    and Windy
    then Rain and
    Breezy

  • Tonight

    Tonight: Rain likely before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 40. Southwest wind 14 to 16 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain Likely
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 48. West wind 15 to 17 mph.

    High: 48 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain after 2am. Partly cloudy, with a low around 42. West wind around 10 mph.

    Low: 42 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. West wind 14 to 18 mph.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Rain and thunderstorms likely, then rain and possibly a thunderstorm after 2pm. High near 51. Windy, with a southwest wind 20 to 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain likely before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 40. Southwest wind 14 to 16 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 48. West wind 15 to 17 mph.
Monday Night
A 20 percent chance of rain after 2am. Partly cloudy, with a low around 42. West wind around 10 mph.
Tuesday
Mostly sunny, with a high near 47. West wind 14 to 18 mph.
Tuesday Night
Mostly clear, with a low around 34.
Wednesday
Sunny, with a high near 41.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 53.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Partly sunny, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
5:03 am EDT Apr 5, 2026
Forecast Valid:
7am EDT Apr 5, 2026-6pm EDT Apr 11, 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