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.

Fair

49°F

9°C

Humidity 86%
Wind Speed Calm
Barometer 30.04 in (1017.3 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 18 Oct 9:56 pm EDT
Extended Forecast for

Upton NY

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 69. South wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 69 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Showers, mainly after 2am. Steady temperature around 60. South wind 10 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 60 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, mainly before 2pm. High near 67. South wind around 17 mph becoming southwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly before 8pm. Partly cloudy, with a low around 49. West wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 49 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 2am. Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers before 2pm. Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 51. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 69. South wind 6 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Showers, mainly after 2am. Steady temperature around 60. South wind 10 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers, mainly before 2pm. High near 67. South wind around 17 mph becoming southwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
A 30 percent chance of showers, mainly before 8pm. Partly cloudy, with a low around 49. West wind 8 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 66.
Tuesday Night
A 40 percent chance of showers after 2am. Partly cloudy, with a low around 53.
Wednesday
A 50 percent chance of showers before 2pm. Partly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Partly sunny, with a high near 61.
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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:
2:04 pm EDT Oct 18, 2025
Forecast Valid:
10pm EDT Oct 18, 2025-6pm EDT Oct 25, 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