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

27°C

81°F

Humidity 79%
Wind Speed S 22 G 33 km/h
Barometer 1016.9 mb (30.03 in)
Dewpoint 23°C (74°F)
Visibility 16 km
Heat Index30°C (86°F)
Last update 14 Jul 4:56 pm EDT
Extended Forecast for

Patchogue NY

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 27. South wind around 21 km/h.

    High: 27 °C

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 23. South wind 5 to 14 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Low: 23 °C

    Chance
    T-storms then
    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before 11am. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 28. Light south wind increasing to 6 to 11 km/h in the morning. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 28 °C

    Showers
    Likely and
    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 23. Southwest wind 5 to 10 km/h.

    Low: 23 °C

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 29. Light southwest wind becoming south 9 to 14 km/h in the morning.

    High: 29 °C

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 23.

    Low: 23 °C

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 31. Chance of precipitation is 30%.

    High: 31 °C

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 24. Chance of precipitation is 30%.

    Low: 24 °C

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 32.

    High: 32 °C

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 27. South wind around 21 km/h.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 23. South wind 5 to 14 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly before 11am. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 28. Light south wind increasing to 6 to 11 km/h in the morning. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Tuesday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 23. Southwest wind 5 to 10 km/h.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 29. Light southwest wind becoming south 9 to 14 km/h in the morning.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 23.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 31. Chance of precipitation is 30%.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 24. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 32.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 28.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 27.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NY
 40.77°N 73°W (Elev. 43 m)
Last Update:
2:29 pm EDT Jul 14, 2025
Forecast Valid:
5pm EDT Jul 14, 2025-6pm EDT Jul 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