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.

Overcast

53°F

12°C

Humidity 77%
Wind Speed S 10 mph
Barometer 30.05 in (1017.4 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 13 May 4:56 am EDT
Extended Forecast for

Terryville NY

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 71. South wind 8 to 18 mph, with gusts as high as 33 mph.

    High: 71 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Showers likely, mainly after 5am. Mostly cloudy, with a low around 55. South wind 7 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

    Low: 55 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 2pm. High near 68. Southeast wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 53. Calm wind becoming northwest around 5 mph after midnight.

    Low: 53 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 72. North wind 7 to 9 mph.

    High: 72 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 71. South wind 8 to 18 mph, with gusts as high as 33 mph.
Tonight
Showers likely, mainly after 5am. Mostly cloudy, with a low around 55. South wind 7 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Thursday
Showers, with thunderstorms also possible after 2pm. High near 68. Southeast wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 53. Calm wind becoming northwest around 5 mph after midnight.
Friday
A 40 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 72. North wind 7 to 9 mph.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Terryville NY
 40.91°N 73.06°W (Elev. 154 ft)
Last Update:
2:29 am EDT May 13, 2026
Forecast Valid:
5am EDT May 13, 2026-6pm EDT May 19, 2026
 
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