PORT JEFFERSON, NY 11777 Weather Forecast & Current Conditions

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ISLIP, NY
Current Weather

4:56 AM EDT MAY 6, 2025
Overcast
Mist
61°F
Feels Like: 59°F
Dewpoint: 59°F
Rel. Hum.: 93%
Visibility: 6 miles
Wind: SE at 15 mph, gusts to 24
Pressure: 30.11 inches
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PORT JEFFERSON, NY 11777
Weather Forecast

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Snow Depth pages
TODAY
Showers likely early, then showers with a slight chance of thunderstorms this afternoon. Patchy fog. Highs in the mid 60s. Southeast winds around 10 mph. Gusts up to 20 mph. Chance of rain 90 percent.
TONIGHT
Cloudy with a chance of showers with a slight chance of thunderstorms. Patchy fog. Lows in the mid 50s. South winds 5 to 10 mph. Chance of rain 50 percent.
WEDNESDAY
Patchy fog in the morning. Mostly cloudy with a chance of showers in the morning, then mostly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.
WEDNESDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 50s. Southwest winds 5 to 10 mph, becoming west after midnight. Chance of rain 20 percent.
THURSDAY
Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Northwest winds around 5 mph. Chance of rain 20 percent.
THURSDAY NIGHT
Mostly cloudy. A chance of rain in the evening, then rain likely after midnight. Lows in the lower 50s. Chance of rain 70 percent.
FRIDAY
Rain likely. Highs around 60. Chance of rain 70 percent.
FRIDAY NIGHT
Mostly cloudy. Rain likely in the evening. Lows in the upper 40s. Chance of rain 70 percent.
SATURDAY
Mostly sunny. Highs in the upper 60s.
SATURDAY NIGHT
Partly cloudy. Lows in the lower 50s.
SUNDAY
Mostly sunny. Highs in the lower 70s.
SUNDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s.
MONDAY
Sunny. Highs around 70.

Visible Weather Satellite
PORT JEFFERSON, NY 11777
Infrared Weather Satellite
PORT JEFFERSON, NY 11777
NEXRAD Weather Radar
PORT JEFFERSON, NY 11777

ISLIP, NY 3 hourly weather forecast

weather forecast created  8:00 PM EDT  5/ 5/2025
Tuesday
6 MAY 2025
PORT JEFFERSON, NY 11777 weather forecast Day 1, 0 hours 2 AM 58° 56° Mostly Cloudy 88%
RAIN
***
0% Thunder
( 30% severe)
SE   12 93% 56°
Low 57° PORT JEFFERSON, NY 11777 weather forecast Day 1, 3 hours 5 AM 58° 56° Mostly Cloudy SE   12 93% 56°
High 65° PORT JEFFERSON, NY 11777 weather forecast Day 1, 6 hours 8 AM 59° 57° Mostly Cloudy 81%
RAIN
***
0% Thunder
( 34% severe)
SE   12 93% 57°

Mostly Cloudy

Rain Likely

PORT JEFFERSON, NY 11777 weather forecast Day 1, 9 hours 11 AM 63° 62° Mostly Cloudy SSE   13 84% 58°
PORT JEFFERSON, NY 11777 weather forecast Day 1, 12 hours 2 PM 63° 62° Mostly Cloudy 74%
RAIN
***
0% Thunder
( 28% severe)
SSE   13 84% 58°
PORT JEFFERSON, NY 11777 weather forecast Day 1, 15 hours 5 PM 62° 61° Mostly Cloudy SSE   12 84% 57°
PORT JEFFERSON, NY 11777 weather forecast Day 1, 18 hours 8 PM 59° 58° Mostly Cloudy 36%
RAIN
.25–.5 in
0% Thunder
( 10% severe)
S   8 90% 56°
PORT JEFFERSON, NY 11777 weather forecast Day 1, 21 hours 11 PM 58° 57° Mostly Cloudy S   6 87% 54°
Wednesday
7 MAY 2025
PORT JEFFERSON, NY 11777 weather forecast Day 2, 0 hours 2 AM 57° 57° Mostly Cloudy 22%
RAIN
.01–.1 in
0% Thunder
( 3% severe)
SSW   3 86% 53°
Low 55° PORT JEFFERSON, NY 11777 weather forecast Day 2, 3 hours 5 AM 55° 55° Mostly Cloudy SSW   2 90% 52°
High 69° PORT JEFFERSON, NY 11777 weather forecast Day 2, 6 hours 8 AM 57° 58° Mostly Cloudy 25%
RAIN
.01–.1 in
0% Thunder
( 8% severe)
SW   2 86% 53°

Mostly Cloudy

Chance of Rain

PORT JEFFERSON, NY 11777 weather forecast Day 2, 9 hours 11 AM 63° 63° Mostly Cloudy SW   6 67% 52°
PORT JEFFERSON, NY 11777 weather forecast Day 2, 12 hours 2 PM 67° 67° Partly Cloudy 15%
RAIN
<.01 in
0% Thunder
( 10% severe)
SW   8 59% 52°
PORT JEFFERSON, NY 11777 weather forecast Day 2, 15 hours 5 PM 66° 66° Partly Cloudy SSW   8 61% 52°
PORT JEFFERSON, NY 11777 weather forecast Day 2, 18 hours 8 PM 60° 60° Partly Cloudy 1%

0% Thunder
( 0% severe)
SSW   6 75% 52°
PORT JEFFERSON, NY 11777 weather forecast Day 2, 21 hours 11 PM 58° 58° Partly Cloudy WSW   5 80% 52°

ISLIP, NY extended weather forecast

Thursday
8 MAY 2025
Friday
9 MAY 2025
Saturday
10 MAY 2025
Sunday
11 MAY 2025
Monday
12 MAY 2025
Low 54° Low 54° Low 48° Low 51° Low 55°
High 71° High 58° High 62° High 72° High 72°
PORT JEFFERSON, NY 11777 weather forecast Day 3 PORT JEFFERSON, NY 11777 weather forecast Day 4 PORT JEFFERSON, NY 11777 weather forecast Day 5 PORT JEFFERSON, NY 11777 weather forecast Day 6 PORT JEFFERSON, NY 11777 weather forecast Day 7
Mostly Cloudy
28% Rain
Overcast
88% Rain
Overcast
74% Rain
Clear
15% Rain
Partly Cloudy
19% Rain
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