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.

A Few Clouds

33°F

1°C

Humidity 89%
Wind Speed W 9 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 12 Mar 9:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: A 30 percent chance of snow before 11pm. Mostly clear, with a low around 33. Wind chill values between 20 and 25. Breezy, with a west wind 18 to 22 mph.

    Low: 33 °F

    Breezy.
    Chance Snow
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 44. Wind chill values between 25 and 30. Breezy, with a west wind 9 to 14 mph becoming south 17 to 22 mph in the afternoon.

    High: 44 °F

    Sunny then
    Mostly Cloudy
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 42. Windy, with a south wind 26 to 29 mph.

    Low: 42 °F

    Decreasing
    Clouds and
    Windy

  • Saturday

    Saturday: Sunny, with a high near 45. Windy, with a west wind 24 to 31 mph.

    High: 45 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 35. West wind 8 to 17 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 46.

    High: 46 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 42. Windy. Chance of precipitation is 80%.

    Low: 42 °F

    Chance Rain
    and Breezy
    then Rain and
    Windy

  • Monday

    Monday: Rain and possibly a thunderstorm. High near 52. Windy. Chance of precipitation is 100%.

    High: 52 °F

    Rain and
    Windy

  • Monday Night

    Monday Night: Rain, mainly before 2am. Low around 36. Very windy. Chance of precipitation is 80%.

    Low: 36 °F

    Rain and Very
    Windy

Detailed Forecast

Tonight
A 30 percent chance of snow before 11pm. Mostly clear, with a low around 33. Wind chill values between 20 and 25. Breezy, with a west wind 18 to 22 mph.
Friday
Increasing clouds, with a high near 44. Wind chill values between 25 and 30. Breezy, with a west wind 9 to 14 mph becoming south 17 to 22 mph in the afternoon.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 42. Windy, with a south wind 26 to 29 mph.
Saturday
Sunny, with a high near 45. Windy, with a west wind 24 to 31 mph.
Saturday Night
Increasing clouds, with a low around 35. West wind 8 to 17 mph.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 46.
Sunday Night
Rain, mainly after 2am. Low around 42. Windy. Chance of precipitation is 80%.
Monday
Rain and possibly a thunderstorm. High near 52. Windy. Chance of precipitation is 100%.
Monday Night
Rain, mainly before 2am. Low around 36. Very windy. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of rain before 8am. Partly sunny, with a high near 41. Breezy.
Tuesday Night
Partly cloudy, with a low around 28. Windy.
Wednesday
Mostly sunny, with a high near 35.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 39.
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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:
6:03 pm EDT Mar 12, 2026
Forecast Valid:
10pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation