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.

Mostly Cloudy

27°C

80°F

Humidity 76%
Wind Speed Vrbl 7 km/h
Barometer 1016.9 mb (30.03 in)
Dewpoint 22°C (72°F)
Visibility 14 km
Heat Index29°C (84°F)
Last update 22 Jun 9:56 am EDT
Extended Forecast for

Sayville NY

  • Today

    Today: A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 27. South wind 14 to 16 km/h.

    High: 27 °C

    Partly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 22. South wind around 14 km/h.

    Low: 22 °C

    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 29. Breezy, with a south wind 18 to 23 km/h increasing to 27 to 32 km/h in the afternoon.

    High: 29 °C

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 22. Southwest wind 24 to 29 km/h decreasing to 18 to 23 km/h after midnight. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.

    Low: 22 °C

    T-storms
    Likely

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 28. West wind 18 to 21 km/h.

    High: 28 °C

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18.

    Low: 18 °C

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 29.

    High: 29 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20.

    Low: 20 °C

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 28.

    High: 28 °C

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 27. South wind 14 to 16 km/h.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 22. South wind around 14 km/h.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 29. Breezy, with a south wind 18 to 23 km/h increasing to 27 to 32 km/h in the afternoon.
Sunday Night
Showers and thunderstorms likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 22. Southwest wind 24 to 29 km/h decreasing to 18 to 23 km/h after midnight. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 28. West wind 18 to 21 km/h.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Sunny, with a high near 29.
Tuesday Night
Mostly clear, with a low around 20.
Wednesday
Mostly sunny, with a high near 28.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Chance of precipitation is 50%.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 27.
Thursday Night
Partly cloudy, with a low around 18.
Friday
Sunny, with a high near 27.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Sayville NY
 40.74°N 73.1°W (Elev. 30 m)
Last Update:
10:02 am EDT Jun 22, 2024
Forecast Valid:
10am EDT Jun 22, 2024-6pm EDT Jun 28, 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