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Port Jefferson Weather Today

Temperature, Feels Like, Rain Chance & Hourly Forecast in Port Jefferson

Port Jefferson temperature today is 22°, feels like 23°, with a humidity level of 90% and wind at 11.27 km/h. Rain chance today is 0%. Use the hourly forecast and 5-day outlook below to plan your day.

Tomorrow in Port Jefferson: expect a high of 21° and a low of 17°, with broken clouds.

broken clouds
22°
broken clouds
H: 23° L: 22°
Feels like 23°
AQI: Moderate (3/5)
Port Jefferson
Weather Updated Sep 18, 2026 1:48 PM
Humidity
90%
Dew 21°
Wind speed
11.27 km/h
WNW · G14.47
Pressure
1016 hPa
Visibility
10 km
High Humidity
Humidity is 90%. May feel uncomfortable.
Weather Summary
Currently in Port Jefferson, expect varied conditions with warm temperatures around 22°. Winds are a light breeze. High humidity may make it feel uncomfortable.
Fri
clear sky
26° 22°
Sat
broken clouds
21° 17°
Sun
light rain
22° 17°
100%
Mon
overcast clouds
22° 18°
72%
Tue
overcast clouds
18° 17°
47%
Wed
overcast clouds
17° 17°
Daily Weather Forecast
Friday
09/18/2026
clear sky
22°
26°
Saturday
09/19/2026
broken clouds
17°
21°
Sunday
09/20/2026
light rain
17°
22°
100%
Monday
09/21/2026
overcast clouds
18°
22°
72%
Tuesday
09/22/2026
overcast clouds
17°
18°
47%
Wednesday
09/23/2026
overcast clouds
17°
17°
Precipitation Probability
0%
05
0%
08
0%
11
0%
14
0%
17
0%
20
0%
23
0%
02
0%
05
0%
08
0%
11
0%
14
0%
17
0%
20
0%
23
0%
02
Evolution
Daily Weather Forecast Evolution (°C)
Lowest temperature
Highest temperature
Temperature Forecast (48h)
22°
Fri
05:00
22°
 
24°
 
26°
 
26°
Fri
17:00
24°
 
22°
 
19°
 
17°
Sat
05:00
17°
 
19°
 
21°
 
21°
Sat
17:00
19°
 
18°
 
17°
 
Hot (≥30°)
Warm
Cool
Cold (<0°)
Weather Map
Sun & Moon
Sunrise
Sunrise
06:35
Sunset
Sunset
18:57
Moon Phase
First Quarter (67%)
Timezone: GMT+05:30
Last updated: Sep 18, 2026 1:48 PM · Data refreshes every 5 min
Location Info
Latitude
Latitude
40.946491
Longitude
Longitude
-73.069267
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More about Port Jefferson
Content curated by the NearWeather editorial team · Updated periodically
Port Jefferson is a hamlet and census-designated place in the Town of Brookhaven in Suffolk County, New York, on the North Shore of Long Island. It is situated on the north shore of the Long Island Sound, and is the largest village within the town of Brookhaven. The climate in Port Jefferson is humid subtropical, with warm summers and cold winters. The average high temperature in the summer is around 81°F (27°C), while the average low temperature in the winter is around 28°F (-2°C). Year-round, the average temperature is around 54°F (12°C). The average precipitation is around 44 inches (112 cm) annually.
Weather data sourced from OpenWeatherMap. Forecasts are estimates and may differ from actual conditions. For severe weather, consult your local meteorological authority.
FAQ's about Port Jefferson
What is the temperature in Port Jefferson right now?

The current temperature in Port Jefferson is 22°, and it feels like 23°. Today's high is 23° and the low is 22°.

Will it rain in Port Jefferson today?

No rain is expected in Port Jefferson today (0% chance). Conditions are currently broken clouds.

What is the weather in Port Jefferson today?

Port Jefferson is experiencing broken clouds with a temperature of 22°. Humidity is at 90% and wind speed is 11.27 km/h from the WNW.

What is the humidity in Port Jefferson today?

Humidity in Port Jefferson is 90% right now, with a dew point of 21°. Conditions may feel muggy or uncomfortable.

What is the wind speed in Port Jefferson today?

Wind speed in Port Jefferson is 11.27 km/h, flowing at 285° WNW wind direction. Gusts up to 14.47 km/h.

What is the 5-day forecast for Port Jefferson?

NearWeather provides a detailed 5-day forecast and 48-hour hourly forecast for Port Jefferson. Today's high is 23° and low is 22°, with a 0% chance of rain. Scroll up to view the full day-by-day and hourly breakdown.

What does it feel like in Port Jefferson today?

It feels like 23° in Port Jefferson today, with 65% cloud cover and 10 km visibility.

Weather in Port Jefferson
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