PORT JEFFERSON, NY 11777 Weather Forecast & Current Conditions

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11777 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
ISLIP, NY Current Weather
5:56 PM EDT APR 3, 2026
Broken Clouds 54°F
Feels Like:	52°F
Dewpoint:	50°F
Rel. Hum.:	86%
Visibility:	10 miles
Wind:	SW at 7 mph
Pressure:	30.15 inches
Last 72 hours
Local Area Snow Depth
New York Current Weather
New York MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

11777 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	PORT JEFFERSON, NY 11777 Weather Forecast	Snowfall Forecast pages Snow Depth pages

THIS AFTERNOON
Partly sunny. Not as cool with highs in the upper 50s. Southwest winds around 10 mph with gusts up to 20 mph.

TONIGHT
Mostly cloudy. Patchy fog. Lows in the lower 50s. Southwest winds 10 to 15 mph.

SATURDAY
Partly sunny. Patchy fog in the morning. A slight chance of showers in the afternoon. Highs in the lower 60s. North winds around 5 mph, increasing to east 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of rain 20 percent.

SATURDAY NIGHT
Cloudy with a 40 percent chance of showers. Lows in the lower 40s. East winds 15 to 20 mph.

SUNDAY
Showers in the morning, then showers with a slight chance of thunderstorms in the afternoon. Highs around 60. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 90 percent.

SUNDAY NIGHT
Mostly cloudy with showers in the evening, then partly cloudy after midnight. Lows in the lower 40s. Chance of rain 90 percent.

MONDAY
Sunny. Highs in the lower 50s.

MONDAY NIGHT
Partly cloudy. Lows in the upper 30s.

TUESDAY
Mostly sunny. Highs around 50.

TUESDAY NIGHT
Mostly clear. Lows in the lower 30s.

WEDNESDAY
Sunny. Highs in the upper 40s.

WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s.

THURSDAY
Mostly sunny. Highs in the mid 50s.

11777 WEATHER SATELLITE LOOPS

Visible Weather Satellite
PORT JEFFERSON, NY 11777

Infrared Weather Satellite
PORT JEFFERSON, NY 11777

11777 WEATHER RADAR LOOP

NEXRAD Weather Radar
PORT JEFFERSON, NY 11777

MOS COMPUTER WEATHER FORECAST

ISLIP, NY 3 hourly weather forecast

weather forecast created 7:00 AM EST 4/ 3/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
3 APR 2026

1 PM

56°

53°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

SW 12

69%

46°

High 57°

4 PM

56°

53°

Mostly Cloudy

SSW 13

74%

48°

Mostly Cloudy

7 PM

53°

49°

Mostly Cloudy

5%

0% Thunder
( 8% severe)

SSW 13

83%

48°

10 PM

54°

51°

Mostly Cloudy

SW 12

83%

49°

Saturday
4 APR 2026

1 AM

53°

50°

Mostly Cloudy

2%

0% Thunder
( 5% severe)

SW 9

86%

49°

Low 51°

4 AM

52°

50°

Mostly Cloudy

WSW 7

89%

49°

High 63°

7 AM

54°

54°

Mostly Cloudy

3%

0% Thunder
( 2% severe)

NW 3

86%

50°

Mostly Cloudy

10 AM

61°

61°

Mostly Cloudy

NE 6

60%

47°

1 PM

61°

60°

Mostly Cloudy

16%
RAIN
<.01 in

0% Thunder
( 1% severe)

E 10

56%

45°

4 PM

53°

48°

Mostly Cloudy

ESE 15

66%

42°

7 PM

46°

40°

Mostly Cloudy

18%
RAIN
<.01 in

0% Thunder
( 3% severe)

E 14

76%

39°

10 PM

44°

38°

Mostly Cloudy

E 12

82%

39°

Sunday
5 APR 2026

1 AM

44°

39°

Mostly Cloudy

16%
RAIN
.01–.1 in

0% Thunder
( 8% severe)

E 8

89%

41°

Low 42°

4 AM

47°

43°

Mostly Cloudy

SSE 9

89%

44°

High 60°

7 AM

50°

45°

Mostly Cloudy

60%
RAIN
***

0% Thunder
( 12% severe)

SSW 14

89%

47°

Mostly Cloudy

Rain Likely

10 AM

56°

52°

Mostly Cloudy

SSW 18

77%

49°

1 PM

58°

54°

Mostly Cloudy

78%
RAIN
***

0% Thunder
( 4% severe)

SW 17

72%

49°

4 PM

56°

53°

Mostly Cloudy

SW 14

72%

47°

7 PM

53°

50°

Mostly Cloudy

WSW 10

69%

43°


ISLIP, NY extended weather forecast
Monday 6 APR 2026	Tuesday 7 APR 2026	Wednesday 8 APR 2026	Thursday 9 APR 2026	Friday 10 APR 2026
Low 39°	Low 39°	Low 26°	Low 34°	Low 44°
High 53°	High 52°	High 47°	High 55°	High 62°

Partly Cloudy 25% Rain/Snow	Partly Cloudy 15% Rain	Clear 7% Snow	Overcast 27% Rain	Mostly Cloudy 47% Rain

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