Weather forecast and meteo conditions in Ukraine and the world

USAUSANew York StatePort Jefferson

Weather in Port Jefferson for a week

Current time in Port Jefferson:

0
 
8
:
0
 
8
Local time.
Time zone: GMT -4
Summertime (plus one hour)
* weather indicated in local time
Sunday, April 13, 2025
The Sun:  Sunrise 06:16, Sunset 19:31.
The Moon:  Moonrise 20:29, Moonset 06:17, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Active
  Water temperature in the sea: +6 °C
 UV index: 3,1 (Moderate)

in the morningfrom 08:00 to 12:00Sometimes short-term rains
Air temperature:
 +4...+6 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
northern
Wind: fresh breeze, northern, speed 18-29 km/h
Wind gusts: 43 km/h
Relative humidity: 82-85%
Cloudiness: 100%
Atmospheric pressure: 1012-1013 hPa
Waves in the sea: moderate, wave height of 2 m
Amount of precipitations:  0,6 mm

by dayfrom 12:01 to 18:00Rain expected
Air temperature:
 +7...+10 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Rain expected
northwest
Wind: moderate breeze, northwest, speed 18-22 km/h
Wind gusts: 36 km/h
Relative humidity: 70-82%
Cloudiness: 100%
Atmospheric pressure: 1011-1012 hPa
Waves in the sea: slight, wave height of 1 m
Amount of precipitations: 7,2 mm

in the eveningfrom 18:01 to 00:00Cloudy sky, no precipitation
Air temperature:
 +8...+9 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
northwest
Wind: moderate breeze, northwest, speed 18-22 km/h
Wind gusts: 43 km/h
Relative humidity: 71-84%
Cloudiness: 91%
Atmospheric pressure: 1011-1012 hPa
Waves in the sea: slight, wave height of 1 m

Monday, April 14, 2025
The Sun:  Sunrise 06:14, Sunset 19:32.
The Moon:  Moonrise 21:32, Moonset 06:40, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Active
  Water temperature in the sea: +6 °C
 UV index: 5,3 (Moderate)

at nightfrom 00:01 to 06:00Clear skies, no precipitation
Air temperature:
 +7...+8 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Clear skies, no precipitation
western
Wind: moderate breeze, western, speed 18-22 km/h
Wind gusts: 43 km/h
Relative humidity: 80-83%
Cloudiness: 26%
Atmospheric pressure: 1012-1013 hPa
Waves in the sea: slight, wave height of 1 m

in the morningfrom 06:01 to 12:00Clear skies, no precipitation
Air temperature:
 +7...+10 °CThe temperature will rise
Weather patterns and meteorological conditions:
Clear skies, no precipitation
western
Wind: moderate breeze, western, speed 14-22 km/h
Wind gusts: 32 km/h
Relative humidity: 67-80%
Cloudiness: 50%
Atmospheric pressure: 1013 hPa
Waves in the sea: slight, wave height of 1 m

by dayfrom 12:01 to 18:00Clear skies, no precipitation
Air temperature:
 +11...+13 °CThe temperature will rise
Weather patterns and meteorological conditions:
Clear skies, no precipitation
southwest
Wind: moderate breeze, southwest, speed 14-22 km/h
Wind gusts: 29 km/h
Relative humidity: 55-65%
Cloudiness: 68%
Atmospheric pressure: 1009-1012 hPa
Waves in the sea: slight, wave height of 1 m

in the eveningfrom 18:01 to 00:00Sometimes short-term rains
Air temperature:
 +10...+13 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southern
Wind: moderate breeze, southern, speed 14-22 km/h
Wind gusts: 36 km/h
Relative humidity: 64-80%
Cloudiness: 100%
Atmospheric pressure: 1007-1009 hPa
Waves in the sea: slight, wave height of 1 m
Amount of precipitations:  0,4 mm

Tuesday, April 15, 2025
The Sun:  Sunrise 06:13, Sunset 19:33.
The Moon:  Moonrise 22:36, Moonset 07:07, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Quiet
  Water temperature in the sea: +6 °C
 UV index: 6,3 (High)

at nightfrom 00:01 to 06:00Rain expected
Air temperature:
 +9...+10 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Rain expected
southwest
Wind: gentle breeze, southwest, speed 14-18 km/h
Wind gusts: 32 km/h
Relative humidity: 84-96%
Cloudiness: 100%
Atmospheric pressure: 1001-1005 hPa
Waves in the sea: smooth (wavelets), wave height of 0,6 m
Amount of precipitations:  2,7 mm

in the morningfrom 06:01 to 12:00Sometimes short-term rains
Air temperature:
 +9...+12 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southwest
Wind: gentle breeze, southwest, speed 14-18 km/h
Wind gusts: 29 km/h
Relative humidity: 89-97%
Cloudiness: 100%
Atmospheric pressure: 999-1001 hPa
Waves in the sea: smooth (wavelets), wave height of 0,6 m
Amount of precipitations:  0,2 mm

by dayfrom 12:01 to 18:00Sometimes short-term rains
Air temperature:
 +13...+14 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southwest
Wind: fresh breeze, southwest, speed 22-36 km/h
Wind gusts: 54 km/h
Relative humidity: 46-79%
Cloudiness: 100%
Atmospheric pressure: 995-997 hPa
Waves in the sea: moderate, wave height of 2 m
Amount of precipitations:  0,1 mm

in the eveningfrom 18:01 to 00:00Cloudy sky, no precipitation
Air temperature:
 +9...+13 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
western
Wind: fresh breeze, western, speed 32 km/h
Wind gusts: 54 km/h
Relative humidity: 45-57%
Cloudiness: 89%
Atmospheric pressure: 996-1001 hPa
Waves in the sea: moderate, wave height of 2 m

Wednesday, April 16, 2025
The Sun:  Sunrise 06:11, Sunset 19:34.
The Moon:  Moonrise 23:39, Moonset 07:39, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Quiet
  Water temperature in the sea: +7 °C
 UV index: 3,7 (Moderate)

at nightfrom 00:01 to 06:00Cloudy sky, no precipitation
Air temperature:
 +6...+9 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
western
Wind: fresh breeze, western, speed 32-36 km/h
Wind gusts: 61 km/h
Relative humidity: 55-60%
Cloudiness: 64%
Atmospheric pressure: 1001-1003 hPa
Waves in the sea: moderate, wave height of 2 m

in the morningfrom 06:01 to 12:00The sky is overcast, no precipitation
Air temperature:
 +5...+7 °CThe air temperature will go down
Weather patterns and meteorological conditions:
The sky is overcast, no precipitation
western
Wind:  strong breezestrong breeze, western, speed 36-40 km/h
Wind gusts: 54 km/h
Relative humidity: 53-61%
Cloudiness: 98%
Atmospheric pressure: 1003-1004 hPa
Waves in the sea: rough, wave height of 3 m

by dayfrom 12:01 to 18:00The sky is overcast, no precipitation
Air temperature:
 +7...+9 °CThe temperature will rise
Weather patterns and meteorological conditions:
The sky is overcast, no precipitation
western
Wind: fresh breeze, western, speed 29-36 km/h
Wind gusts: 50 km/h
Relative humidity: 52-54%
Cloudiness: 97%
Atmospheric pressure: 1004 hPa
Waves in the sea: moderate, wave height of 2 m

in the eveningfrom 18:01 to 00:00Cloudy sky, no precipitation
Air temperature:
 +6...+8 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
western
Wind: fresh breeze, western, speed 32-36 km/h
Wind gusts: 54 km/h
Relative humidity: 56-66%
Cloudiness: 86%
Atmospheric pressure: 1005-1009 hPa
Waves in the sea: moderate, wave height of 2 m

Thursday, April 17, 2025
The Sun:  Sunrise 06:10, Sunset 19:35.
The Moon:  Moonrise --:--, Moonset 08:19, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Quiet
  Water temperature in the sea: +7 °C
 UV index: 0,6 (Low)

at nightfrom 00:01 to 06:00Variably cloudy
Air temperature:
 +4...+5 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Variably cloudy
western
Wind:  strong breezestrong breeze, western, speed 36-40 km/h
Wind gusts: 54 km/h
Relative humidity: 66-71%
Cloudiness: 80%
Atmospheric pressure: 1009-1013 hPa
Waves in the sea: rough, wave height of 3 m

in the morningfrom 06:01 to 12:00Clear skies, no precipitation
Air temperature:
 +5...+7 °CThe temperature will rise
Weather patterns and meteorological conditions:
Clear skies, no precipitation
western
Wind: fresh breeze, western, speed 25-36 km/h
Wind gusts: 47 km/h
Relative humidity: 59-70%
Cloudiness: 34%
Atmospheric pressure: 1013-1016 hPa
Waves in the sea: moderate, wave height of 2 m

by dayfrom 12:01 to 18:00Light cloud cover in the sky, no precipitation
Air temperature:
 +8...+11 °CThe temperature will rise
Weather patterns and meteorological conditions:
Light cloud cover in the sky, no precipitation
northwest
Wind: fresh breeze, northwest, speed 25-32 km/h
Wind gusts: 43 km/h
Relative humidity: 49-57%
Cloudiness: 46%
Atmospheric pressure: 1016 hPa
Waves in the sea: moderate, wave height of 2 m

in the eveningfrom 18:01 to 00:00Clear skies, no precipitation
Air temperature:
 +7...+10 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Clear skies, no precipitation
northwest
Wind: fresh breeze, northwest, speed 22-32 km/h
Wind gusts: 43 km/h
Relative humidity: 49-60%
Cloudiness: 1%
Atmospheric pressure: 1017-1020 hPa
Waves in the sea: moderate, wave height of 2 m

Friday, April 18, 2025
The Sun:  Sunrise 06:08, Sunset 19:36.
The Moon:  Moonrise 00:37, Moonset 09:08, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Unstable
  Water temperature in the sea: +7 °C

at nightfrom 00:01 to 06:00Clear skies, no precipitation
Air temperature:
 +5...+7 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Clear skies, no precipitation
western
Wind: moderate breeze, western, speed 22 km/h
Wind gusts: 40 km/h
Relative humidity: 62-73%
Cloudiness: 0%
Atmospheric pressure: 1020-1021 hPa
Waves in the sea: slight, wave height of 1 m

in the morningfrom 06:01 to 12:00Clear skies, no precipitation
Air temperature:
 +5...+9 °CThe temperature will rise
Weather patterns and meteorological conditions:
Clear skies, no precipitation
southern
Wind: moderate breeze, southern, speed 11-25 km/h
Wind gusts: 40 km/h
Relative humidity: 64-74%
Cloudiness: 18%
Atmospheric pressure: 1021-1023 hPa
Waves in the sea: slight, wave height of 1 m

by dayfrom 12:01 to 18:00Sometimes short-term rains
Air temperature:
 +10...+12 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southern
Wind: fresh breeze, southern, speed 14-29 km/h
Wind gusts: 50 km/h
Relative humidity: 59-66%
Cloudiness: 90%
Atmospheric pressure: 1016-1020 hPa
Waves in the sea: moderate, wave height of 2 m
Amount of precipitations:  0,1 mm

in the eveningfrom 18:01 to 00:00Sometimes short-term rains
Air temperature:
 +10...+11 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southern
Wind: fresh breeze, southern, speed 29-32 km/h
Wind gusts: 50 km/h
Relative humidity: 66-82%
Cloudiness: 100%
Atmospheric pressure: 1011-1015 hPa
Waves in the sea: moderate, wave height of 2 m
Amount of precipitations:  1,4 mm

Saturday, April 19, 2025
The Sun:  Sunrise 06:07, Sunset 19:37.
The Moon:  Moonrise 01:30, Moonset 10:06, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Unstable
  Water temperature in the sea: +7 °C

at nightfrom 00:01 to 06:00Sometimes short-term rains
Air temperature:
 +10 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southwest
Wind: fresh breeze, southwest, speed 22-32 km/h
Wind gusts: 50 km/h
Relative humidity: 84-94%
Cloudiness: 100%
Atmospheric pressure: 1008-1009 hPa
Waves in the sea: moderate, wave height of 2 m
Amount of precipitations:  0,2 mm

in the morningfrom 06:01 to 12:00Sometimes short-term rains
Air temperature:
 +10...+11 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
western
Wind: fresh breeze, western, speed 22-32 km/h
Wind gusts: 61 km/h
Relative humidity: 91-96%
Cloudiness: 100%
Atmospheric pressure: 1008-1009 hPa
Waves in the sea: moderate, wave height of 2 m
Amount of precipitations:  1 mm

by dayfrom 12:01 to 18:00Rain expected
Air temperature:
 +10 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Rain expected
northern
Wind: fresh breeze, northern, speed 32 km/h
Wind gusts: 61 km/h
Relative humidity: 87-92%
Cloudiness: 100%
Atmospheric pressure: 1008-1009 hPa
Waves in the sea: moderate, wave height of 2 m
Amount of precipitations:  1,6 mm

in the eveningfrom 18:01 to 00:00Rain expected
Air temperature:
 +10 °CThe temperature will not changeprecipitation is expected
Weather patterns and meteorological conditions:
Rain expected
southern
Wind: fresh breeze, southern, speed 14-32 km/h
Wind gusts: 61 km/h
Relative humidity: 93-96%
Cloudiness: 97%
Atmospheric pressure: 1008-1009 hPa
Waves in the sea: moderate, wave height of 2 m
Amount of precipitations:  1,9 mm

weather in nearby cities

Sometimes short-term rains Poquott  +5 °C 
Sometimes short-term rains Belle Terre  +5 °C 
Sometimes short-term rains Port Jefferson Station  +5 °C 
Sometimes short-term rains East Setauket  +5 °C 
Sometimes short-term rains Setauket-East Setauket  +5 °C 
Sometimes short-term rains Mount Sinai  +5 °C 
Sometimes short-term rains Terryville  +5 °C 
Sometimes short-term rains Old Field  +5 °C 
Sometimes short-term rains Miller Place  +5 °C 
Sometimes short-term rains Stony Brook  +5 °C 
Sometimes short-term rains Sound Beach  +5 °C 
Sometimes short-term rains Head of the Harbor  +5 °C 
Sometimes short-term rains Selden  +5 °C 
Sometimes short-term rains Centereach  +5 °C 
Sometimes short-term rains Coram  +4 °C 
Sometimes short-term rains Saint James  +5 °C 
Sometimes short-term rains Lake Grove  +5 °C 
Sometimes short-term rains Nissequogue  +5 °C 
Sometimes short-term rains Rocky Point  +5 °C 
Sometimes short-term rains Nesconset  +5 °C 
Sometimes short-term rains Gordon Heights  +4 °C 
Sometimes short-term rains Long Island  +4 °C 
Sometimes short-term rains Long Island  +4 °C 
Sometimes short-term rains Farmingville  +5 °C 
Sometimes short-term rains Lake Ronkonkoma  +5 °C 
Sometimes short-term rains Shoreham  +5 °C 
Sometimes short-term rains Village of the Branch  +5 °C 
Sometimes short-term rains Holtsville  +5 °C 
Sometimes short-term rains Holbrook  +5 °C 
Sometimes short-term rains Smithtown  +5 °C 
Sometimes short-term rains Ronkonkoma  +5 °C 
Sometimes short-term rains Medford  +5 °C 
Sometimes short-term rains Ridge  +4 °C 
Sometimes short-term rains East Shoreham  +5 °C 
Sometimes short-term rains Kings Park  +5 °C 
Sometimes short-term rains Hauppauge  +5 °C 
Sometimes short-term rains Yaphank  +4 °C 
Sometimes short-term rains Islandia  +5 °C 
Sometimes short-term rains North Patchogue  +5 °C 
Sometimes short-term rains Fort Salonga  +5 °C 
Sometimes short-term rains Bohemia  +5 °C 
Sometimes short-term rains Central Islip  +5 °C 
Sometimes short-term rains Patchogue  +5 °C 
Sometimes short-term rains Wading River  +5 °C 
Sometimes short-term rains East Patchogue  +5 °C 
Sometimes short-term rains North Bellport  +5 °C 
Sometimes short-term rains Commack  +5 °C 
Sometimes short-term rains Sayville Heights  +5 °C 

Temperature trend on the chart

DateTemperature,°C101314911121171011779104795451048108561059116671191214810111091211791110MaximumAverageMinimumat nightin the morningby dayin the evening13.414.415.416.417.418.419.4102.557.512.515
weather in Port Jeffersontemperature in Port JeffersonHourly weather forecast in Port Jeffersonweather in Port Jefferson todayweather in Port Jefferson tomorrowweather in Port Jefferson for 3 daysweather in Port Jefferson for 5 dayssunrise and sunset in Port Jeffersonrising and setting of the Moon in Port Jeffersonexact time in Port Jefferson

Additional data

Country:USA
Telephone country code:+1
Location:New York State
District:Suffolk County
The name of the city or village:Port Jefferson
Time zone:America/New_York, GMT -4. Summertime (plus one hour)
Coordinates:Latitude: 40.9465; Longitude: -73.0693;
Aliases (In other languages):English: Port JeffersonРусский: Порт ДжефферсонУкраїнська: Порт Джефферсон
 
Drowned Meadow, Drowned Meadows, Port DZeferson, So-was-sett, Sowassett, USPTJ, bwrt jfrswn, jie fei xun gang, 杰斐逊港
The project was created and is maintained by FDSTAR company, 2025

Weather in Port Jefferson for a week

© MeteoCast.ua - weather forecast in your city and your country. All rights reserved, 2025
Privacy Policy
Options of weather forecast displaying
Display temperature:  
 
 
Show the pressure:  
 
 
Display wind speed:  
 
 
 
 
Protection from UV radiation from the Sun is necessary. A UV index reading of 3 to 5 means moderate risk of harm from unprotected sun exposure. Stay in shade near midday when the sun is strongest. If outdoors, wear sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Bright surfaces, such as sand, water, and snow, will increase UV exposure.
On land:
Thin branches and tree trunks sway, and the wind is felt by the hand.
At Sea:
The sea is rough, not very large waves are well developed in length; many white horses are formed.
On land:
The wind picks up dust and small pieces of paper; small branches are moved.
At Sea:
The sea is moderately rough. Waves appear in the form of elongated ridges, some of which are overturned; fairly frequent white horses.
Protection from UV radiation from the Sun is necessary. A UV index reading of 6 to 7 means high risk of harm from unprotected sun exposure. Protection against skin and eye damage is needed. Reduce time in the sun between 10 a.m. and 4 p.m. If outdoors, seek shade and wear sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Bright surfaces, such as sand, water, and snow, will increase UV exposure.
On land:
The thin branches and leaves on the trees fluctuate continuously; wind extends light flag.
At Sea:
Light and short waves are clearly visible at sea. Foam of glassy appearance. Perhaps scattered white horses.
On land:
Large branches of trees sway, and thin ones bend; whistling heard in telegraph wires; umbrellas used with difficulty.
At Sea:
Large waves form on the sea; the white foam crests are more extensive everywhere.
Protection from UV radiation from the Sun is not necessary. A UV index reading of 0 to 2 means low danger from the sun's UV rays for the average person. Wear sunglasses on bright days. If you burn easily, cover up and use broad spectrum SPF 30+ sunscreen. Bright surfaces, such as sand, water, and snow, will increase UV exposure.