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Old Mastic, New York Weather Forecast
Old Mastic, New York Weather
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Weather Forecast for Old Mastic, New York : Suffolk County
Issued: 12:59 am EST Dec 22, 2025 Latitude: 40.7806544 Longitude: -72.8245466 View on Google Maps

MouseOver for Detail Forecast
Overnight Monday Tuesday Wednesday Christmas Day Friday Saturday Sunday
Mostly Clear on Overnight Increasing Clouds on Monday 80% chance of rain & snow on Tuesday Sunny on Wednesday Mostly Cloudy on Christmas Day 70% chance of rain on Friday Mostly Cloudy on Saturday 50% chance of rain on Sunday
Low: 27°F High: 37°F High: 42°F High: 42°F High: 43°F High: 50°F High: 42°F High: 47°F
Low: 32°F Low: 34°F Low: 29°F Low: 36°F Low: 34°F Low: 35°F  
Mostly Clear Increasing Clouds Rain & Snow Sunny Mostly Cloudy Rain Mostly Cloudy Rain
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Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
28°
Feels like 18°F
Clear
as of 12:56 AM EST
Rel. Humidity: 50%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
12 MPH
Gust: 22 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
WESTHAMPTON BEACH - (KFOK)
28°
Feels like 19°F
Clear
as of 12:53 AM EST
Rel. Humidity: 50%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
10 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
ISLIP - (KISP)
30°
Feels like 20°F
Clear
as of 12:56 AM EST
Rel. Humidity: 46%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.34 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 20 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
FARMINGDALE - (KFRG)
28°
Feels like 19°F
Clear
as of 12:53 AM EST
Rel. Humidity: 50%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.37 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 21 MPH
290° West
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 27. Wind chill values between 15 and 20. Northwest wind around 14 mph.

Increasing Clouds on Monday Monday... Increasing clouds, with a high near 37. Wind chill values between 15 and 25. Northwest wind around 11 mph.

50% chance of rain & snow Monday Night Monday Night... A slight chance of snow between 1am and 4am, then a chance of rain and snow. Increasing clouds, with a low around 32. West wind around 10 mph. Chance of precipitation is 50%.

80% chance of rain & snow Tuesday Tuesday... Rain and snow, becoming all rain after 10am. High near 42. Southwest wind 8 to 14 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 34. West wind 9 to 14 mph.

Sunny on Wednesday Wednesday... Sunny, with a high near 42.

Increasing Clouds on Wednesday Night Wednesday Night... Increasing clouds, with a low around 29.

Mostly Cloudy on Christmas Day Christmas Day... Mostly cloudy, with a high near 43.

Cloudy on Thursday Night Thursday Night... Cloudy, with a low around 36.

70% chance of rain Friday Friday... Rain likely. Cloudy, with a high near 50. Chance of precipitation is 70%.

50% chance of rain Friday Night Friday Night... A 50 percent chance of rain. Mostly cloudy, with a low around 34.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 42.

30% chance of rain Saturday Night Saturday Night... A 30 percent chance of rain. Mostly cloudy, with a low around 35.

50% chance of rain Sunday Sunday... A 50 percent chance of rain. Mostly cloudy, with a high near 47.

Current Radar Image


Sun Almanac for Old Mastic, New York
Sunrise: 07:13 AM
Sunset: 4:27 PM
Civil Sunrise:06:42 AM
Civil Sunset: 4:58 PM
Nautical Sunrise: 06:07 AM
Nautical Sunset: 5:33 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:06 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.