Port Jefferson, NY Weather Forecast & Conditions

Good eveningCurrently Mostly Cloudy

Port Jefferson, NY

Islip Weather StationCHANGE

79°Mostly Cloudy--/71°

HOURLY

Today6 PM80° 3%SSW 7mph

7 PM79° 3%SSW 7mph

8 PM77° 4%SSW 5mph

9 PM76° 4%SSW 5mph

10 PM75° 5%SW 5mph

11 PM75° 6%SW 5mph

Wednesday12 AM74° 23%SW 4mph

1 AM74° 42%SW 4mph

2 AM73° 53%WSW 4mph

3 AM73° 24%W 3mph

4 AM73° 16%WNW 3mph

5 AM72° 22%NNW 3mph

MORE

RIGHT NOW

Feels like82°

SUNRISE6:05 AM

SUNSET7:46 PM

Humidity:79%

Wind:SSE 9 mph

UV index:2

Barometer:29.75

7 DAY FORECAST

Tuesday

--/71°

Mostly Cloudy

Wednesday

84°/71°

Mostly Sunny 5%

Thursday

78°/65°

PM Showers 54%

Friday

81°/67°

Mostly Sunny 5%

Saturday

76°/69°

Rain 62%

Sunday

80°/67°

Scattered Thunderstorms 51%

Monday

80°/63°

Mostly Sunny 24%

Port Jefferson, NY Weather Forecast & Conditions

Long Island weather

Tuesday, August 18

'We will have ... another storm like that'

Some residents say they want to see some sort of progress and a returned to a sense of normalcy. NewsdayTV's Andrew Ehinger has more.

MORE ON THIS TOPIC2 years after storm destroyed Suffolk dams, roads and homes, finally a cause for hope

Only in Newsday2 years after storm destroyed Suffolk dams, roads and homes, finally a cause for hope

Forecast: Hot and muggy start to workweek

Long Island weather: More heat and humidity

Only in NewsdayWhy the risk of flash flooding is increasing on LI

Another hot weekend in the forecast for LI following Friday's thunderstorms

Flooding risk remains as storms move from the Midwest to the mid-Atlantic

A deadly stretch of unsettled weather is continuing with thunderstorms, heavy rain and flash flooding an ongoing threat from the Midwest to the mid-Atlantic.

Belgian wildfire approaches Germany as Greece probes deadly blaze

Heavy rains kill 1 in South Korea and flood major streets in Philippines

Tropical Storm Lala rakes Hawaii with high winds and rain without making landfall

At least 7 people have died from days of heavy rain and record-setting flooding in Indiana

Indiana authorities say at least 5 people have died as severe weather crosses the state

Hurricane Lala skirts Hawaii's Big Island without making landfall as heavy wind, rain lash region

Hawaii's Big Island under rare hurricane landfall threat as Tropical Storm Lala strengthens

The livin' is no longer so easy: How carefree dreams of 'summertime' are fading in 2026's swelter

European countries battle multiple wildfires as record heat grips the continent

Record-breaking rain floods Chiba east of Tokyo, killing at least 5 people

Oppressive heat, high humidity grip much of the US as students start a new school year

Hurricane warning is issued for the Big Island of Hawaii as Tropical Storm Lala approaches

South Korea soccer players push for a K League season shift as heat punishes summer matches

UK firefighters out in force to tackle fires on hottest day of the year

Torrential rain near Tokyo causes flooding and paralyzes traffic, killing 1

The warming climate is forcing marathons to consider changes to keep runners cool

Stingray lashings up as marine heat wave off Southern California draws more to shore

A punishing European drought shrivels crops from Dutch potatoes to Bosnian corn

Alpine resorts' snowmaking equipment may be put to work fighting summer forest fires

Deaths and damage reported as severe weather in the Midwest spawns tornadoes and flash flooding

Forecasters warn a Pacific system could soak Hawaii as Tropical Storm Cristobal fades

Landslide in Mumbai kills 7 as monsoon rains drench India

Tropical Storm Chan-hom weakens and departs Japan after causing power outages and injuries

Severe weather knocks out power in Illinois, Indiana and Ohio as 'ring of fire' strikes Midwest

Candlelight vigil in Islamabad honors 10 climbers killed on Broad Peak

Extreme heat is reshaping Italy's sparkling wine industry with early harvests and nighttime picking

Hundreds more flights are canceled as Tropical Storm Dolphin causes flooding in eastern China

Contiguous US breaks its record for hottest month ever, NOAA says

Indonesia battles growing wildfires as Mount Bromo blaze spreads

UK and France prepare for another heat wave as western Europe sets new temperature record

Flood death toll in India's Assam reaches 100 as thousands lose their homes

Shanghai cancels at least 1,300 flights as Typhoon Dolphin hits China's eastern coast

Eastern China braces for Typhoon Dolphin, shutting schools and tourist activities

A helicopter battling a Utah wildfire crashes as a blaze kills dozer operator in Oregon

Serbia races to contain wildfires as Europe's blistering heat wave grips the Balkans

Airport closes in Okinawa as Typhoon Dolphin hits parts of southern Japan

Europe heat wave puts all major Italian cities on red alert as Austria sets heat record

Man charged with arson in Spokane, Washington, told police he planned wildfire for weeks

China can't get enough of this smelly fruit as farmers fight extreme weather to feed the craving

Climate change created conditions for Canada fires, scientists say, as Trump blames mismanagement

How extreme heat is changing Americans' lives, according to a new AP-NORC poll

Central Europe swelters and Slovakia and Austria hit their record high temperatures

Puerto Rican cities hit with water rationing measures as record dry conditions persist

Record heat wave impacts people and animals in Japan and Korean Peninsula

Rising temperatures could keep more flights from taking off on time

Firefighters scramble to contain fires outside Athens before winds and high temperatures return

This summer isn't breaking heat records — yet. Wait until El Nino kicks in, scientists say

Sri Lanka closes schools as floods and mudslides triggered by heavy rains kill 7

Europe's hot, dry summer takes its toll with fires in France and Greece, and drought in the UK

Ethiopia landslide kills 14 at monastery ritual, search continues for missing

Record low Danube levels push some countries in Eastern Europe to the brink of energy emergency

All 10 climbers swept away in avalanche in Pakistan are confirmed dead

Dry, hot summers are putting Dutch dikes at risk and threatening German river trade

Heat wave brings record-breaking temps, heightened wildfire risk to parts of Western US

Fishing closures are becoming routine as record heat warms rivers in the US West

Record-low Danube River affects tourism and industry as drought and heat grip Central Europe

UN, scientists warn that strong El Nino will add fuel to 'a planet already on fire'

Human-caused climate change made Spanish, French fires much more likely, scientists calculate

As France tames wildfire and lets 84,000 evacuees go home, blazes flare across Europe

Prague zoo keeps polar bears cool with ice cubes as European summer heatwave hits

Monsoon rains trigger house collapse in Lahore, killing 9 family members

Southern Europe burns as 3 firefighters die and France battles blaze 4 times the size of Paris

The Latest: Fire crews in southwest France battle massive blaze as they face extreme temperatures

Tropical Storm Fausto to splash past Hawaii as Hurricane Genevieve sends swells to Mexico

France orders 4,000 more evacuated as fires displace a third of a million across southwest Europe

Powerful tornado leaves widespread damage in Wisconsin but time of day may have saved lives

Major Hurricane Genevieve roars in the Pacific as Fausto weakens to a tropical storm near Hawaii

Pakistan monsoon death toll tops 100 in a month as more heavy rain forecast

French president pledges support on visit to fire zone, vows: 'We will win this battle together'

Wisconsin tornado causes extensive damage and cuts power to thousands of homes

NOAA report finds Gulf of Maine warming slowed for now, but ecosystem remains unstable

What to know about the historic wildfires in France and Spain

Long Islanders Favorites

Only in NewsdayIs it LI's worst tick season, again? Here's how experts measure the invasion.

Increasing concern could be fed by a newly dominant and aggressive tick species and heavy snow this winter that insulated them from cold weather.

MORE ON THIS TOPICYour guide to Long Island tick diseases 'Rabbit fever' warning in Suffolk after 3 cases of rare tick-borne illness At-home Lyme disease tests — for ticks — hitting market this month

I Do!: Bouquet toss? This LI couple opted for a T-shirt giveaway instead

NYS to send out $1B in utility rebates. When will you get yours?

Only in NewsdayLI village thrift store to close after 3 years

Top Stories

French wildfire created a monster cloud, unleashing lightning that ignited more fires

Sweltering heat wave grips central and southern US for a second straight day

Genevieve becomes a major Pacific hurricane off Mexico, but no direct threat to land is forecast

Typhoon Noul weakens after making landfall, brings heavy rain to southern China

Hurricane Genevieve moves through the Pacific off Mexico, but no direct threat to land is forecast

Typhoon Noul makes landfall in southern China, with over 700,000 evacuated and flights canceled

ENVIRONMENT & CLIMATE CHANGE

'Our communities should not be collateral damage'

02:22

'We will have ... another storm like that'

02:13

'You have to check your entire body'

04:43

How to avoid contracting tularemia

01:04

'It's just a place that has contamination throughout'

01:51

DEC to test groundwater around LI battery plant fire site

0:41

'It's impacting our way of life'

01:58

'They're coming to visit more often'

01:46

'This happened two years ago as well, and it seems to be happening with increasing frequency'

02:44

'Continues to be a game changer'

01:34

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