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.

Mostly Cloudy

71°F

22°C

Humidity 71%
Wind Speed S 9 mph
Barometer 29.95 in (1014.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 4 Sep 10:56 am EDT
Extended Forecast for

Upton NY

  • Today

    Today: Sunny, with a high near 77. South wind 7 to 10 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 5am. Partly cloudy, with a low around 64. South wind 7 to 9 mph.

    Low: 64 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 80. South wind 6 to 13 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 81. South wind 8 to 14 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 59 °F

    Showers
    Likely

  • Sunday

    Sunday: A 50 percent chance of showers. Mostly cloudy, with a high near 72.

    High: 72 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 77. South wind 7 to 10 mph.
Tonight
A 30 percent chance of showers, mainly before 5am. Partly cloudy, with a low around 64. South wind 7 to 9 mph.
Friday
Sunny, with a high near 80. South wind 6 to 13 mph.
Friday Night
Mostly clear, with a low around 68. South wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 81. South wind 8 to 14 mph.
Saturday Night
Showers likely, mainly after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 72.
Sunday Night
Mostly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Upton NY
 40.87°N 72.89°W (Elev. 89 ft)
Last Update:
6:51 am EDT Sep 4, 2025
Forecast Valid:
11am EDT Sep 4, 2025-6pm EDT Sep 10, 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