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

26°C

79°F

Humidity 47%
Wind Speed NW 11 km/h
Barometer 1017.5 mb (30.05 in)
Dewpoint 14°C (57°F)
Visibility 16 km
Heat Index27°C (80°F)
Last update 26 Jul 6:56 pm EDT
Extended Forecast for

Saint James NY

  • Tonight

    Tonight: Partly cloudy, with a low around 18. Northwest wind 5 to 14 km/h.

    Low: 18 °C

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 31. North wind around 11 km/h becoming southeast in the afternoon.

    High: 31 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 19. South wind 5 to 10 km/h becoming calm after midnight.

    Low: 19 °C

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 31. North wind 5 to 11 km/h becoming southeast in the afternoon.

    High: 31 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 21. Southeast wind around 11 km/h.

    Low: 21 °C

    Slight Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 29.

    High: 29 °C

    Partly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 21.

    Low: 21 °C

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 29. Chance of precipitation is 30%.

    High: 29 °C

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22.

    Low: 22 °C

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 18. Northwest wind 5 to 14 km/h.
Saturday
Sunny, with a high near 31. North wind around 11 km/h becoming southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 19. South wind 5 to 10 km/h becoming calm after midnight.
Sunday
Mostly sunny, with a high near 31. North wind 5 to 11 km/h becoming southeast in the afternoon.
Sunday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 21. Southeast wind around 11 km/h.
Monday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 29.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 21.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 29. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 22.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 31.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 32.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Saint James NY
 40.88°N 73.16°W (Elev. 148 m)
Last Update:
5:47 pm EDT Jul 26, 2024
Forecast Valid:
7pm EDT Jul 26, 2024-6pm EDT Aug 2, 2024
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation