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.

Mostly Cloudy

44°F

7°C

Humidity 71%
Wind Speed S 9 mph
Barometer 30.51 in (1033.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 9 Apr 5:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 41. South wind 5 to 10 mph becoming light after midnight.

    Low: 41 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 48. Southwest wind 5 to 14 mph.

    High: 48 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. South wind 16 to 18 mph.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 53. Northwest wind 15 to 18 mph.

    High: 53 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 43. North wind around 8 mph.

    Low: 43 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 55. Breezy.

    High: 55 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 51. Windy.

    Low: 51 °F

    Mostly Cloudy
    and Windy

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 41. South wind 5 to 10 mph becoming light after midnight.
Friday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 48. Southwest wind 5 to 14 mph.
Friday Night
Mostly cloudy, with a low around 44. South wind 16 to 18 mph.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 53. Northwest wind 15 to 18 mph.
Saturday Night
Clear, with a low around 43. North wind around 8 mph.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Mostly cloudy, with a high near 55. Breezy.
Monday Night
Mostly cloudy, with a low around 51. Windy.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 53. Breezy.
Wednesday
Partly sunny, with a high near 60.
Wednesday Night
Mostly cloudy, with a low around 51. Breezy.
Thursday
Partly sunny, with a high near 57.
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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:
2:47 pm EDT Apr 9, 2026
Forecast Valid:
6pm EDT Apr 9, 2026-6pm EDT Apr 16, 2026
 
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Additional Resources

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Chance of Precipitation