National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

Overcast

22°C

72°F

Humidity NA
Wind Speed E 6 km/h
Barometer 1019.4 mb (30.11 in)
Dewpoint N/A
Visibility 16 km
Last update 12 Jul 8:56 pm EDT
Extended Forecast for

Upton NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Calm wind.

    Low: 20 °C

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 28. East wind 5 to 13 km/h.

    High: 28 °C

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21. Southeast wind 3 to 8 km/h.

    Low: 21 °C

    Mostly Cloudy

  • Monday

    Monday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 29. Light south wind increasing to 6 to 11 km/h in the morning. Chance of precipitation is 30%.

    High: 29 °C

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 22. South wind 3 to 8 km/h. Chance of precipitation is 30%.

    Low: 22 °C

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 32.

    High: 32 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23.

    Low: 23 °C

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 32.

    High: 32 °C

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23.

    Low: 23 °C

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. Calm wind.
Sunday
Partly sunny, with a high near 28. East wind 5 to 13 km/h.
Sunday Night
Mostly cloudy, with a low around 21. Southeast wind 3 to 8 km/h.
Monday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 29. Light south wind increasing to 6 to 11 km/h in the morning. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 22. South wind 3 to 8 km/h. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 32.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 32.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 23.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 32.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 22.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Upton NY
 40.86°N 72.87°W (Elev. 49 m)
Last Update:
6:14 pm EDT Jul 12, 2025
Forecast Valid:
9pm EDT Jul 12, 2025-6pm EDT Jul 19, 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