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

Hazardous Weather Conditions

Current conditions at

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

A Few Clouds

41°F

5°C

Humidity 51%
Wind Speed W 7 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 14 Feb 1:56 pm EST
Extended Forecast for

Upton NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 40. West wind around 9 mph.

    High: 40 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 38. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 38 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Snow likely, mainly after 1am. Cloudy, with a low around 28. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 28 °F

    Snow Likely

  • Washington's Birthday

    Washington's Birthday: A 20 percent chance of snow before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 38. Northeast wind 5 to 8 mph.

    High: 38 °F

    Slight Chance
    Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.

    High: 41 °F

    Cloudy then
    Chance Rain

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 40. West wind around 9 mph.
Tonight
Mostly clear, with a low around 25. Calm wind.
Sunday
Increasing clouds, with a high near 38. Calm wind becoming northeast around 6 mph in the afternoon.
Sunday Night
Snow likely, mainly after 1am. Cloudy, with a low around 28. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Washington's Birthday
A 20 percent chance of snow before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 38. Northeast wind 5 to 8 mph.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Partly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 32.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 43.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 30.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Upton NY
 40.87°N 72.89°W (Elev. 89 ft)
Last Update:
1:38 pm EST Feb 14, 2026
Forecast Valid:
2pm EST Feb 14, 2026-6pm EST Feb 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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