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

55°F

13°C

Humidity 36%
Wind Speed NW 8 mph
Barometer 30.28 in (1025.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 11 Apr 7:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: Patchy frost after 5am. Otherwise, clear, with a low around 37. North wind 8 to 10 mph.

    Low: 37 °F

    Clear then
    Patchy Frost

  • Sunday

    Sunday: Patchy frost before 8am. Otherwise, increasing clouds, with a high near 50. Northeast wind 8 to 13 mph becoming south in the afternoon.

    High: 50 °F

    Patchy Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 45. Breezy, with a south wind 15 to 20 mph.

    Low: 45 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 56. Breezy, with a southwest wind 21 to 24 mph.

    High: 56 °F

    Partly Sunny
    and Breezy

  • Monday Night

    Monday Night: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 52. Windy, with a southwest wind 21 to 26 mph decreasing to 13 to 18 mph after midnight.

    Low: 52 °F

    Slight Chance
    Showers and
    Windy

  • Tuesday

    Tuesday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy frost after 5am. Otherwise, clear, with a low around 37. North wind 8 to 10 mph.
Sunday
Patchy frost before 8am. Otherwise, increasing clouds, with a high near 50. Northeast wind 8 to 13 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 45. Breezy, with a south wind 15 to 20 mph.
Monday
Partly sunny, with a high near 56. Breezy, with a southwest wind 21 to 24 mph.
Monday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 52. Windy, with a southwest wind 21 to 26 mph decreasing to 13 to 18 mph after midnight.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Mostly cloudy, with a low around 53.
Thursday
Partly sunny, with a high near 62.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 55.
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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:
6:36 pm EDT Apr 11, 2026
Forecast Valid:
8pm EDT Apr 11, 2026-6pm EDT Apr 18, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation