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As of 14:37 EDT

Weather in Port Jefferson, NY

88°Current weather

Port Jefferson, Sunday, 9 August, 14:37

Clear. Feels like 96°. High 88°, low 72°.

Pressure29.94 inHg
Wind4 mph N
Humidity60%
Visibility6.2 mi
Dew point73°

10-day forecast for Port Jefferson, NY: 66° to 88°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

88°
Best day: Sunday, August 9
77° · 0.44 in
Worst day: Sunday, August 16

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1086° / 71°0.22Heavy rain
MorningClear75°feels 75°
AfternoonMostly clear86°feels 90°
EveningLight rain74°feels 75°
OvernightClear73°feels 73°
86 °Heavy rain

Port Jefferson, Monday, 10 August

Heavy rain. High 86°, low 71°.

Pressure29.97 inHg
Wind3.2 mph N
Humidity52%
Visibility6.2 mi
Dew point60°
Tue, 1183° / 72°0Overcast
MorningOvercast73°feels 74°
AfternoonOvercast80°feels 82°
EveningPartly cloudy80°feels 82°
OvernightOvercast73°feels 74°
83 °Overcast

Port Jefferson, Tuesday, 11 August

Overcast. High 83°, low 72°.

Pressure29.85 inHg
Wind4.3 mph W
Humidity67%
Visibility6.2 mi
Dew point66°
Wed, 1277° / 72°0Overcast
MorningOvercast75°feels 75°
AfternoonOvercast77°feels 77°
EveningPartly cloudy75°feels 76°
OvernightOvercast76°feels 77°
77 °Overcast

Port Jefferson, Wednesday, 12 August

Overcast. High 77°, low 72°.

Pressure29.77 inHg
Wind9.8 mph NE
Humidity67%
Visibility6.2 mi
Dew point62°
Thu, 1381° / 71°0Clear
MorningOvercast71°feels 71°
AfternoonPartly cloudy80°feels 81°
EveningClear80°feels 80°
OvernightPartly cloudy71°feels 71°
81 °Clear

Port Jefferson, Thursday, 13 August

Clear. High 81°, low 71°.

Pressure29.83 inHg
Wind8.5 mph W
Humidity63%
Visibility6.2 mi
Dew point62°
Fri, 1472° / 67°0.02Light rain
MorningLight rain70°feels 69°
AfternoonLight rain71°feels 71°
EveningLight rain71°feels 70°
OvernightLight rain72°feels 71°
72 °Light rain

Port Jefferson, Friday, 14 August

Light rain. High 72°, low 67°.

Pressure30.09 inHg
Wind10.7 mph NW
Humidity54%
Visibility—
Dew point54°
Sat, 1574° / 67°0Mostly clear
MorningMostly clear69°feels 69°
AfternoonMostly clear70°feels 70°
EveningMostly clear74°feels 74°
OvernightMostly clear72°feels 73°
74 °Mostly clear

Port Jefferson, Saturday, 15 August

Mostly clear. High 74°, low 67°.

Pressure30.18 inHg
Wind12.7 mph S
Humidity60%
Visibility—
Dew point55°
Sun, 1677° / 72°0.44Rain
MorningRain73°feels 73°
AfternoonRain74°feels 75°
EveningRain77°feels 78°
OvernightRain76°feels 78°
77 °Rain

Port Jefferson, Sunday, 16 August

Rain. High 77°, low 72°.

Pressure30.00 inHg
Wind28 mph S
Humidity82%
Visibility—
Dew point68°
Mon, 1778° / 66°0.02Light rain
MorningLight rain69°feels 69°
AfternoonLight rain73°feels 72°
EveningLight rain78°feels 78°
OvernightLight rain72°feels 73°
78 °Light rain

Port Jefferson, Monday, 17 August

Light rain. High 78°, low 66°.

Pressure29.88 inHg
Wind21.7 mph N
Humidity60%
Visibility—
Dew point56°
Tue, 1878° / 66°0Overcast
MorningOvercast67°feels 67°
AfternoonOvercast71°feels 70°
EveningOvercast77°feels 77°
OvernightOvercast72°feels 72°
78 °Overcast

Port Jefferson, Tuesday, 18 August

Overcast. High 78°, low 66°.

Pressure29.97 inHg
Wind13.9 mph N
Humidity69%
Visibility—
Dew point58°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Port Jefferson, NY around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.