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.

Fair

31°F

-1°C

Humidity 96%
Wind Speed Calm
Barometer 30.10 in (1019.1 mb)
Dewpoint 30°F (-1°C)
Visibility 8.00 mi
Last update 20 Apr 2:56 am EDT
Extended Forecast for

3 Miles SE Bellport NY

Frost Advisory April 20, 03:05am until April 20, 08:00am
Freeze Warning April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Frost Advisory
Freeze Warning
  •  
    Frost Advisory April 20, 03:05am until April 20, 08:00am

    NOW until 8:00am Mon

    Frost Advisory

  • Overnight

    Low: 39 °F

    Clear

  • Monday

    Monday: A 30 percent chance of showers, mainly between 8am and 2pm. Increasing clouds, with a high near 49. Northwest wind 6 to 8 mph.

    High: 49 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. Wind chill values between 25 and 30. North wind 10 to 15 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 46. North wind 5 to 11 mph becoming south in the afternoon.

    High: 46 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 2am. Increasing clouds, with a low around 43. South wind 10 to 14 mph.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance
    Showers

  • Wednesday Night

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

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

Overnight
Clear, with a low around 39. Northwest wind around 6 mph.
Monday
A 30 percent chance of showers, mainly between 8am and 2pm. Increasing clouds, with a high near 49. Northwest wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 34. Wind chill values between 25 and 30. North wind 10 to 15 mph.
Tuesday
Sunny, with a high near 46. North wind 5 to 11 mph becoming south in the afternoon.
Tuesday Night
A 30 percent chance of showers after 2am. Increasing clouds, with a low around 43. South wind 10 to 14 mph.
Wednesday
A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 53.
Friday Night
Partly cloudy, with a low around 46.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 50.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Bellport NY
 40.71°N 72.9°W (Elev. 0 ft)
Last Update:
2:20 am EDT Apr 20, 2026
Forecast Valid:
3am EDT Apr 20, 2026-6pm EDT Apr 26, 2026
 
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