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

58°F

14°C

Humidity 87%
Wind Speed NE 8 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Jun 1:56 am EDT
Extended Forecast for

Terryville NY

  • Overnight

    Overnight: A 20 percent chance of light rain. Cloudy, with a low around 57. Northeast wind around 9 mph.

    Low: 57 °F

    Slight Chance
    Light Rain

  • Sunday

    Sunday: Mostly cloudy, with a high near 68. Northeast wind around 10 mph.

    High: 68 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 57. East wind around 6 mph.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 71. East wind 8 to 10 mph.

    High: 71 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 59. East wind 3 to 6 mph.

    Low: 59 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers before 8am. Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of light rain. Cloudy, with a low around 57. Northeast wind around 9 mph.
Sunday
Mostly cloudy, with a high near 68. Northeast wind around 10 mph.
Sunday Night
Mostly cloudy, with a low around 57. East wind around 6 mph.
Monday
Mostly cloudy, with a high near 71. East wind 8 to 10 mph.
Monday Night
Mostly cloudy, with a low around 59. East wind 3 to 6 mph.
Tuesday
Mostly cloudy, with a high near 74.
Tuesday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 63.
Wednesday
A 30 percent chance of showers before 8am. Mostly cloudy, with a high near 80.
Wednesday Night
Mostly cloudy, with a low around 68.
Juneteenth
A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 67.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 64.
Saturday
Mostly sunny, with a high near 81.
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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:
9:07 pm EDT Jun 14, 2025
Forecast Valid:
2am EDT Jun 15, 2025-6pm EDT Jun 21, 2025
 
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