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 7 mph
Barometer 29.55 in (1000.5 mb)
Dewpoint 48°F (9°C)
Visibility 1.75 mi
Wind Chill45°F (7°C)
Last update 12 Mar 4:56 am EDT
Extended Forecast for

5 Miles SSE Bayport NY

  • Overnight

    Overnight: A 40 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 41. Southwest wind around 11 mph, with gusts as high as 26 mph.

    Low: 41 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Rain likely before 4pm, then rain and snow. Patchy fog before 9am. Temperature rising to near 46 by 9am, then falling to around 38 during the remainder of the day. Breezy, with a northwest wind 18 to 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 46 °F⇓

    Rain Likely
    and Patchy
    Fog then
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Rain and snow before 10pm, then a slight chance of snow between 10pm and 11pm. Low around 30. Wind chill values between 25 and 30. Northwest wind 15 to 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 45. Wind chill values between 25 and 30 early. Breezy, with a west wind 8 to 13 mph becoming south 16 to 21 mph in the afternoon.

    High: 45 °F

    Sunny then
    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a steady temperature around 42. Windy, with a south wind 24 to 26 mph.

    Low: 42 °F

    Partly Cloudy
    and Windy

  • Saturday

    Saturday: Sunny, with a high near 48. Breezy.

    High: 48 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 33.

    Low: 33 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, with a high near 47.

    High: 47 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 40. Breezy. Chance of precipitation is 80%.

    Low: 40 °F

    Breezy.
    Chance Rain
    then Rain

Detailed Forecast

Overnight
A 40 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 41. Southwest wind around 11 mph, with gusts as high as 26 mph.
Thursday
Rain likely before 4pm, then rain and snow. Patchy fog before 9am. Temperature rising to near 46 by 9am, then falling to around 38 during the remainder of the day. Breezy, with a northwest wind 18 to 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
Rain and snow before 10pm, then a slight chance of snow between 10pm and 11pm. Low around 30. Wind chill values between 25 and 30. Northwest wind 15 to 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
Increasing clouds, with a high near 45. Wind chill values between 25 and 30 early. Breezy, with a west wind 8 to 13 mph becoming south 16 to 21 mph in the afternoon.
Friday Night
Partly cloudy, with a steady temperature around 42. Windy, with a south wind 24 to 26 mph.
Saturday
Sunny, with a high near 48. Breezy.
Saturday Night
Increasing clouds, with a low around 33.
Sunday
Cloudy, with a high near 47.
Sunday Night
Rain, mainly after 2am. Low around 40. Breezy. Chance of precipitation is 80%.
Monday
Rain and possibly a thunderstorm. High near 54. Windy. Chance of precipitation is 90%.
Monday Night
Rain likely. Cloudy, with a low around 32. Windy. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of rain. Mostly sunny, with a high near 40. Breezy.
Tuesday Night
Partly cloudy, with a low around 25. Breezy.
Wednesday
Mostly sunny, with a high near 37.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Bayport NY
 40.68°N 73.02°W (Elev. 0 ft)
Last Update:
2:50 am EDT Mar 12, 2026
Forecast Valid:
5am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation