Current Weather Forecast for Port Jefferson

NY 11777  |   12:22pm

Weather Conditions

48°

Feels Like 40°

Mostly Cloudy/Wind

34° 49°

3

UV Index

Good

Air Quality

W 23 mph

Wind

0 in

rain

Today

Sat 3/14

49°

Highest Temperature

Partly cloudy and windy. High 49F. Winds WNW at 25 to 35 mph. Winds could occasionally gust over 40 mph.

Tonight

Sat 3/14

31°

Lowest Temperature

2%

A few passing clouds, otherwise generally clear. Low 31F. Winds NNW at 10 to 20 mph.

Tomorrow

Sun 3/15

42°

Highest Temperature

3%

Considerable cloudiness. High 42F. Winds E at 10 to 15 mph.

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in Port Jefferson

Hourly Weather Forecast & Temperature

1PM

48°

Feels Like 40°

Partly Cloudy/Wind

WNW 27 mph

Wind

1014 mb

Pressure

31%

Humidity

4

UV Index

10mi

Visibility

59%

Cloud Cover

2PM

48°

Feels Like 39°

Partly Cloudy/Wind

WNW 27 mph

Wind

1015 mb

Pressure

30%

Humidity

4

UV Index

10mi

Visibility

41%

Cloud Cover

3PM

48°

Feels Like 39°

Mostly Sunny/Wind

WNW 27 mph

Wind

1016 mb

Pressure

30%

Humidity

3

UV Index

10mi

Visibility

29%

Cloud Cover

4PM

46°

Feels Like 38°

Sunny/Wind

WNW 25 mph

Wind

1018 mb

Pressure

32%

Humidity

2

UV Index

10mi

Visibility

6%

Cloud Cover

5PM

46°

Feels Like 38°

Sunny/Wind

WNW 20 mph

Wind

1019 mb

Pressure

32%

Humidity

1

UV Index

10mi

Visibility

4%

Cloud Cover

6PM

45°

Feels Like 37°

Sunny

WNW 17 mph

Wind

1021 mb

Pressure

33%

Humidity

0

UV Index

10mi

Visibility

1%

Cloud Cover

7PM

43°

Feels Like 36°

Clear

WNW 14 mph

Wind

1022 mb

Pressure

37%

Humidity

0

UV Index

10mi

Visibility

1%

Cloud Cover

8PM

42°

Feels Like 35°

Clear

WNW 12 mph

Wind

1024 mb

Pressure

40%

Humidity

0

UV Index

10mi

Visibility

5%

Cloud Cover

9PM

40°

Feels Like 35°

Clear

NW 9 mph

Wind

1025 mb

Pressure

44%

Humidity

0

UV Index

10mi

Visibility

13%

Cloud Cover

10PM

1%

39°

Feels Like 33°

Mostly Clear

NW 9 mph

Wind

1026 mb

Pressure

47%

Humidity

0

UV Index

10mi

Visibility

24%

Cloud Cover

11PM

1%

38°

Feels Like 32°

Clear

NW 8 mph

Wind

1027 mb

Pressure

49%

Humidity

0

UV Index

10mi

Visibility

19%

Cloud Cover

12AM

2%

36°

Feels Like 31°

Partly Cloudy

NW 7 mph

Wind

1028 mb

Pressure

52%

Humidity

0

UV Index

10mi

Visibility

31%

Cloud Cover

Sat 3/14

Sat

34°

49°

Windy with a mix of sun and clouds. Highs in the upper 40s and lows in the low 30s.

38°

Feels Like

WNW 27 mph

Wind

32%

Humidity

4

UV Index

7:05 AM

Sunrise

6:58 PM

Sunset

Sun 3/15

Sun

3%

31°

44°

Considerable cloudiness. Highs in the low 40s and lows in the upper 30s.

27°

Feels Like

E 12 mph

Wind

57%

Humidity

4

UV Index

7:03 AM

Sunrise

6:59 PM

Sunset

Mon 3/16

Mon

91%

42°

55°

Windy with periods of rain. Highs in the mid 50s and lows in the low 30s.

43°

Feels Like

S 24 mph

Wind

94%

Humidity

2

UV Index

7:02 AM

Sunrise

7:00 PM

Sunset

Tue 3/17

Tue

8%

28°

50°

Mostly sunny and windy. Highs in the upper 30s and lows in the mid 20s.

24°

Feels Like

W 20 mph

Wind

43%

Humidity

5

UV Index

7:00 AM

Sunrise

7:01 PM

Sunset

Wed 3/18

Wed

24°

35°

Mix of sun and clouds. Highs in the mid 30s and lows in the low 30s.

17°

Feels Like

W 7 mph

Wind

38%

Humidity

5

UV Index

6:58 AM

Sunrise

7:02 PM

Sunset

Thu 3/19

Thu

6%

31°

44°

Mix of sun and clouds. Highs in the mid 40s and lows in the mid 30s.

30°

Feels Like

SE 9 mph

Wind

60%

Humidity

4

UV Index

6:57 AM

Sunrise

7:03 PM

Sunset

Fri 3/20

Fri

21%

34°

46°

Partly cloudy. Highs in the mid 40s and lows in the mid 30s.

32°

Feels Like

WSW 8 mph

Wind

66%

Humidity

5

UV Index

6:55 AM

Sunrise

7:04 PM

Sunset

Sat 3/21

Sat

23%

34°

44°

Considerable cloudiness. Highs in the mid 40s and lows in the low 30s.

29°

Feels Like

WNW 11 mph

Wind

63%

Humidity

4

UV Index

6:53 AM

Sunrise

7:05 PM

Sunset

Need to see beyond 12 Hours?

Find more forecast on the FREE FOX WEATHER App

GO TO APP STORE

Latest Stories from New York

New York officials warn residents as salamanders, frogs begin annual spring migration as temperatures climb

New York officials are warning residents to be careful when driving on warm, rainy nights this spring as hundreds of different amphibians will emerge for their annual breeding season.

Winter storm slams millions across Northern Plains, Upper Midwest as blizzard conditions snarl travel

A potent clipper out of the northwest is blasting millions across the Upper Midwest with snow and powerful wind gusts, creating dangerous road conditions and contributing to thousands of air travel delays across the country.

Millions along I-95 corridor see snow and cold temperatures after days of record warmth

After a few days of record heat, the spring tease is over. Snow has already started falling in parts of Virginia, Pennsylvania, West Virginia and New York as a cold front moves up the East Coast. Throughout the day on Thursday, temperatures in the 70s and 80s gave way, and snow started to spread along the I-95 corridor.

Allergy season is worse than ever. Here are the 10 worst allergy capitals in the US for 2026

Allergy sufferers in the U.S. might've felt it for a while, but a new report shows that pollen allergy season is more intense and longer-lasting than ever.

Load More Stories