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

42°F

6°C

Humidity 85%
Wind Speed SW 12 mph
Barometer 29.81 in (1009.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 14 Mar 12:56 am EDT
Extended Forecast for

Village of the Branch NY

  • Overnight

    Overnight: A 20 percent chance of showers before 2am. Mostly clear, with a steady temperature around 40. Southwest wind 14 to 16 mph.

    Low: 40 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 49. Breezy, with a west wind 15 to 21 mph, with gusts as high as 38 mph.

    High: 49 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 32. Northwest wind 6 to 11 mph becoming light after midnight.

    Low: 32 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 48. Calm wind becoming southeast 5 to 9 mph in the morning.

    High: 48 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain after 2am. Low around 39. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Mostly Cloudy
    then Rain

  • Monday

    Monday: Rain, with thunderstorms also possible after 2pm. High near 57. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 57 °F

    Rain

  • Monday Night

    Monday Night: Rain and possibly a thunderstorm. Low around 35. Chance of precipitation is 90%.

    Low: 35 °F

    Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain before 8am. Mostly sunny, with a high near 45.

    High: 45 °F

    Chance Rain
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers before 2am. Mostly clear, with a steady temperature around 40. Southwest wind 14 to 16 mph.
Saturday
Sunny, with a high near 49. Breezy, with a west wind 15 to 21 mph, with gusts as high as 38 mph.
Saturday Night
Increasing clouds, with a low around 32. Northwest wind 6 to 11 mph becoming light after midnight.
Sunday
Mostly cloudy, with a high near 48. Calm wind becoming southeast 5 to 9 mph in the morning.
Sunday Night
Rain after 2am. Low around 39. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, with thunderstorms also possible after 2pm. High near 57. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain and possibly a thunderstorm. Low around 35. Chance of precipitation is 90%.
Tuesday
A 30 percent chance of rain before 8am. Mostly sunny, with a high near 45.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
Partly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Village of the Branch NY
 40.86°N 73.19°W (Elev. 98 ft)
Last Update:
9:14 pm EDT Mar 13, 2026
Forecast Valid:
1am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation