U.S. / NY / Stony Brook / 11794

Stony Brook, NY

See Radar

Current Weather Forecast for Stony Brook

NY 11794 | 2:25pm

Weather Conditions

86°

Feels Like 90°

Sunny

63° 89°

UV Index

Moderate

Air Quality

S 13 mph

Wind

0 in

rain

Today

Tue 5/19

87°

Highest Temperature

15%

Sun and clouds mixed. A stray shower or thunderstorm is possible. High 87F. Winds SSW at 10 to 20 mph.

Tonight

Tue 5/19

68°

Lowest Temperature

Some clouds. Low 68F. Winds SW at 10 to 20 mph.

Tomorrow

Wed 5/20

87°

Highest Temperature

41%

Sunny in the morning then increasing clouds with some scattered thunderstorms later in the day. Gusty winds and small hail are possible. High 87F. Winds WSW at 10 to 20 mph. Chance of rain 40%.

Local Weather Radar - Stony Brook, NY

Live Stony Brook Local Radar Forecast by FOX Weather

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in Stony Brook

Hourly Weather Forecast & Temperature

3PM

15%

86°

Feels Like 89°

Mostly Sunny

SSW 14 mph

Wind

1016 mb

Pressure

52%

Humidity

UV Index

10mi

Visibility

24%

Cloud Cover

4PM

15%

83°

Feels Like 86°

5PM

15%

81°

Feels Like 83°

6PM

19%

77°

Feels Like 77°

7PM

75°

Feels Like 75°

8PM

73°

Feels Like 73°

9PM

72°

Feels Like 72°

10PM

70°

Feels Like 70°

11PM

70°

Feels Like 71°

12AM

71°

Feels Like 71°

1AM

70°

Feels Like 71°

2AM

70°

Feels Like 71°

Tue 5/19

Tue

15%

63°

89°

Mix of sun and clouds. Highs in the upper 80s and lows in the upper 60s.

90°

Feels Like

SSW 16 mph

Wind

55%

Humidity

UV Index

5:31 AM

Sunrise

8:07 PM

Sunset

Wed 5/20

Wed

41%

64°

87°

Thu 5/21

Thu

61%

53°

66°

Fri 5/22

Fri

12%

51°

63°

Sat 5/23

Sat

59%

51°

57°

Sun 5/24

Sun

45%

52°

60°

Mon 5/25

Mon

59%

53°

62°

Tue 5/26

Tue

38%

56°

71°

Need to see beyond 12 Hours?

Find more forecast on the FREE FOX WEATHER App

GO TO APP STORE

Looking for homes in this area?

Sponsored by Redfin. Housing data supplied by Redfin independent of FOX Weather.

Latest Stories from New York

Over 80 million to face 90-degree heat as potentially record-breaking May heat wave impacts the East

Put away those jackets — record-breaking heat is slamming the East after stubborn chilly weather gripped the region at the start of May. In fact, some cities along the I-95 corridor are seeing their first heat alerts of 2026.

You could see the Northern Lights in these states due to a geomagnetic storm

A fast stream of solar wind from a colossal coronal hole in the sun’s atmosphere could spark a geomagnetic storm, bringing with them the potential to see the Northern Lights. NOAA issued a Geomagnetic Storm Watch for Thursday and Friday, warning that the strongest geomagnetic activity is expected between 11 p.m. and 2 a.m. EST.