Symptoms of dehydration can include extreme thirst, dry mouth, headache, fatigue, dizziness, racing heart, loss of appetite, dark colored urine, cramps, and flushed skin.

Outdoor football practices started Monday in one of the hottest weeks so far in the year.

With heat advisories still in effect across Northeast Florida, emergency crews in St. Johns County are keeping busy—not just with water rescues, but heat-related emergencies on the sand.

Naval Station Mayport said on Tuesday it was under “Black Flag” condition due to extreme heat. But what does “Black Flag” condition mean?

With an Extreme Heat Warning in effect and heat index values climbing between 103 and 113 degrees, outdoor crews across Jacksonville are doing everything they can to stay safe—and stay on the job.

With “feels like” temperatures ranging from 102 to 110 degrees through the afternoon today, the city of Jacksonville said it will be continuing the operation of its cooling centers on Monday.

A heat advisory is in effect from 11 a.m. through 7 p.m.

With sweltering temperatures expected to soar over the weekend, the city is opening cooling centers on Sunday, July 27.

Hot weather continues to permeate the Jacksonville area, and while we’ve been telling residents how to stay safe and cool, some professions, like firefighting, make it a little more difficult to accomplish.

Low chance for rain Sunday, Scattered Storms Monday

Jacksonville residents are facing another sweltering day as the National Weather Service has issued a heat advisory starting at 11 a.m. With temperatures soaring, city officials are urging everyone to take precautions and make use of the resources available to stay safe, including two designated cooling centers for anyone needing relief from the heat.

Isolated storms possible for some counties this weekend

City Rescue Mission will open its cooling centers due to the high temperatures forecasted over the coming days.

Heat Advisories possible, tracking the Tropics

Jacksonville and nearby areas are expected to experience hot temperatures and elevated rain chances through the July 4th weekend as a potential tropical system tracks across Florida. News4JAX's meteorologist covers how this may affect local fireworks and outdoor plans.

Weekend Forecast

Jacksonville is bracing for a stretch of high temperatures and increasing rain chances as a summer pattern sets in.

Dehydration is more common in the heat because our bodies sweat more to help stay cool, and the more we sweat, the more fluids we lose.

Feels like could be above 100 degrees for multiple days

Meteorologist Katie Garner from News4JAX's Weather Authority details the summer solstice forecast, expected high temperatures in the 90s, the potential for storms, and important safety advice for outdoor activities in Jacksonville.

Afternoon showers and high humidity are expected to continue across Jacksonville, driven by the Gulf and Atlantic sea breezes.

Summer starts Friday

Jacksonville area braces for another week of hot temps in the 90s along with scattered afternoon showers. News4JAX’s meteorologist provides the latest look at who’s getting rain and when, plus tips for staying safe at the beach and planning your week.

News4JAX's meteorologist breaks down what Jacksonville can expect through the weekend, with a focus on afternoon thunderstorms, rising temperatures, and a persistent summer weather pattern.

Jacksonville is in for a stretch of hot, humid days with temperatures near 92 degrees, a strong chance for pop-up storms, and important beach safety reminders. Get the latest from News4JAX The Weather Authority.

Scientists say 4 billion people, about half the world’s population, experienced at least one extra month of extreme heat because of human-caused climate change from May 2024 to May 2025.

News4JAX meteorologist Richard Nunn tracks severe thunderstorms and high heat in Jacksonville, with a potential cool down and lower rain chances expected over the weekend. See the latest on what to expect and when to plan your outdoor activities.

High temperatures remain in the 90s with high pressure

Much hotter weather is on the way

The ping-pong balls have spoken: Cooper Flagg might be headed to Dallas to start his NBA career.

Life-threatening rip currents

Unseasonable warmth will begin on Wednesday and intensify through the weekend, with highs reaching the 90s for many inland areas across NE Florida and Georgia.

Jimmy Butler has been through these first-game-back matchups against former teams before.

This fall will mark the 10th anniversary of the NBA changing its playoff rules and not guaranteeing a division champion a top-four seed regardless of their record.

On average, nearly half of all residential energy consumption in the U.S. is attributed to heating costs and 85% of adults report that their utility costs have gone up in recent years.

The National Weather Service says extreme heat is the leading cause of weather-related deaths, killing more people in the U.S. than any other weather phenomenon in 2023.

The city of Jacksonville is set to break ground on a new hypersonic testing facility on Monday.

Everywhere you go people are talking about the weather, wiping sweat from their brows. It’s truly been a hot, hot summer and we continue to talk about it everyday.

Dangerous feels-like temperatures remain until the evening after sunset for all of Southeast Georgia and Northeast Florida. Storms with heavy downpours will continue in Putnam, Flagler, and part of St. Johns counties until after sunset.

A poll from The Associated Press-NORC Center for Public Affairs Research finds that around 7 in 10 Americans say extreme heat has had a major or minor impact on their electricity bills in the past year, and a majority have seen a similar impact on their outdoor activities.

As the summer of 2024 blazes on, Jacksonville finds itself in the grip of incessant heat with temperatures soaring to 90 degrees or higher for an unbroken stretch of 28 days and counting.

It’s been unusually hot in Jacksonville, and pets are feeling it, too! The Jacksonville Humane Society is sharing tips on keeping pets safe and cool this summer.

Stay hydrated and indoors during this dangerous heat day

Temperatures remain in the low 90s with the feels like in the 100s and afternoon rain

A dangerously hot summer has shaped up in the U.S. West.

New study on "Urban Heat Index" shows majority of city is 8 degrees hotter than actual temperature. Around 11-thousand live under conditions that are 9 degrees hotter.

Have you ever noticed you feel more anxious or stressed when it gets really hot outside? Well, you’re not alone.

One of the hottest areas of Jacksonville is in the downtown core. Scientists say it’s hotter there because of building and paving material, lack of greenspace, and population density.

The 90s are in the forecast for Monday. Our high is 95, with the record set at 101 degrees—but while breaking temperature records isn’t in the cards, feels-like temperatures will make us feel like we’re around 110 degrees in some areas later today.

As the heat continues to hit us this summer, JEA is working to extend two, 20-inch chilled water mains.

The high heat we’re experiencing right now is considered a heat wave by the National Weather Service based on their definition which “is a period of abnormally hot weather generally lasting more than two days.”

Heat exhaustion or heatstroke can develop in a matter of minutes. And those aren't the only things to look out for. Six children have already died in hot cars this year.

Temperatures will have the feels like effect of 100 plus degrees

A heatwave is headed to the Central and Eastern portions of the United States next week with dangerous temperatures anticipated to be near or over 100 degrees.

As the temperature rises, so does the risk of heat-related illnesses -- and certain medications can make a person even more vulnerable when it's hot outside.

Increasing Afternoon Highs and Rain Chances Through the End of the Week

Heat-related illnesses can happen to anyone, even if you’re used to this Florida heat.

Blue Jay Listening Room won Jax Best Local Music Venue a couple of years ago cementing its place in Jacksonville as the place to check out music of all genres in an intimate setting.

Excessive Heat Looms over NE FL and SE GA

To help children stay in the game and keep cool, Dr. Richard So, a pediatrician with Cleveland Clinic Children’s, suggests hydrating long before they take the field.

Monday featured an Excessive Heat Warning for much of the area, with a Heat Advisory for areas to the north and south. But what’s the difference between the heat alerts? And which one is worse?

July Was the Warmest Month on Record

Isolated thunderstorms and dangerous temperatures persist Sunday

AAA has tips for drivers to make sure cars are in great shape during these dangerously high temperatures.

Feels like temperatures this afternoon will be at or above 105°.

One of our hottest weeks yet

Tonight: Showers and isolated storms through 10 p.m. Partly cloudy and mild overnight with patchy areas of dense fog inland.

This will be the second true “heatwave” of the summer, and will likely result in Heat Advisories and feels like temperatures above 105° in the afternoon.

If you’re tired of the extreme heat, it’s probably best to get ready for some more because it’s likely not going anywhere any time soon.

Scientists say global heat that inched into worrisome new territory this week is a clear example of how pollutants released by humans are warming their environment.

The heat has been on the past several days, and more warmth is on the way. It’s all courtesy of an expanding heat dome lifting north and east. But, what exactly is a heat dome?

Jacksonville went under its first heat advisory of the summer Tuesday. The air temp was 98 degrees. The heat index: was 110 degrees, that's the top 25 hottest heat index for the month of June, according to Chief Meteorologist Richard Nunn.

Victor Wembanyama's first moment in the NBA is now just a few days away.

With temperatures seemingly stuck in the 90s this week, it’s important to understand that unless you’re careful, the heat can get the better of you.

The NBA just completed its highest-scoring regular season in 53 years, with its teams scoring a record 282,127 points while a record 20 players made at least 200 3-pointers.

December is the month of holiday decorations, spending time with family and friends, and the return of sweatshirt weather.

Doctors at a 24-hour animal critical care center in Jacksonville say they’re seeing an increase in the number of dogs suffering from heat stroke coming into the emergency room.

News4JAX talked with a local air conditioning company about the most common reasons A/C units fail — and what you can do to prevent them.

Summertime is a fun time, but it can also be a dangerous time when it comes to your health.

As the Jacksonville area deals with triple-digit temperatures and high humidity, people are trying to find ways to beat the heat.

You might get a bit steamed when you open your electric bill after these days of hot temperatures.

With a heat advisory in effect from noon to 8 p.m. Thursday, the city of Jacksonville has multiple locations open to the public that offer air conditioning or other ways to cool off in extreme heat.

We want to hear from you.

Detecting hot spots in Jacksonville: News4JAX got an inside look at a new study that’s about to get underway and how it will benefit our community.

Our highest feel-like afternoon temperature was only 99 degrees before this week. But so far this week, that number has hit triple digits every afternoon.

Firefighters already work in extreme conditions, but hot weather makes it much tougher.

These temps can be dangerous for those susceptible to heat.

Consumer Reports’ food-safety experts reveal some simple tips to save your food and keep your cool.

Patchy fog possible this morning.  Becoming partly cloudy as high pressure to our north continues the onshore flow from the Atlantic with the sea breeze moving well inland through the day.

Heat is what summer is all about, but sometimes we see a spike and get into dangerous levels of heat. Often times that level of heat is extended and can easily take a toll on you. Even, if you work principally indoors.

Happy Tuesday! Go ahead and grab that rain gear, showers and storms make a comeback this afternoon/evening.

Happy Fri-YAY! We are in for another toasty day with highs in the mid to low 90s, sunny skies and winds west 5-10 mph.

Memorial Day is coming, and it got us thinking: What are your plans for the holiday weekend?

A sign for Super Bowl 55 is framed by palm trees at Raymond James Stadium Thursday, Feb. 4, 2021, in Tampa, Fla. The city is hosting Sunday's Super Bowl football game between the Tampa Bay Buccaneers and the Kansas City Chiefs. (AP Photo/Charlie Riedel)The NBA doesn't want the Super Bowl to turn into a superspreader. The Super Bowl plan is designed to avoid more potential contact-tracing pratfalls as one of the top priorities. Clubs are instructed to not host in-person Super Bowl gatherings at a team facility.

Utah's game in Washington on Wednesday was postponed because contact-tracing issues among the Wizards meant they wouldn't have eight available players for that matchup. “I'm for whatever the NBA wants us to do," Washington coach Scott Brooks said. When teams started testing in late November prior to the start of training camps, 48 players had positive COVID-19 tests. There were at least 36 players in the league dealing with virus-related issues or protocols when Tuesday began, based on information released by teams. Counting the two new postponements and another on Dec. 23 between Oklahoma City and Houston, the league has seen six games moved because of virus issues.

Thursday had a high of 90° we will see about a 35° drop in temperatures as we wake up on Friday morning. Normal morning low is 56° we should be there in the morning. Sunday morning temperatures will be not as cool, wake up temperatures will start on the mid-60s. Early next week, cold, yes, cold temperatures will be possible, 40s seem likely by Tuesday morning. Sunrise Friday low temperatures

Some spotty Atlantic showers could move ashore late tonight. A tropical wave pushing into the Gulf provides a slight bump in our rain chances tomorrow to 50%Wednesday expect a few more inland showers around with movement to the west. Showers clear the coastal areas by the afternoon but rain will target inland locations through the late afternoon and evening. The new Tropical Depression Seven that formed in the central Atlantic 3,000 miles from Jacksonville. The tropical wave in the Gulf has potential to also become a depression or storm Wednesday or Thursday.

In case you've been relaxing inside your house blasting the A/C the past couple days, you might not have noticed that it's hot out all over the country, with temps ini some areas climbing well over 100 degrees.

JACKSONVILLE, Fla. Were all feeling the summer heat, but the question is: How will it impact the spread of COVID-19? By and large, the virus does not like sunshine, heat and humidity, DeSantis said. The claim: That coronavirus by and large does not like sunshine, heat and humidity. According to the Centers for Disease Control, it is not yet known whether weather and temperature affect the spread of COVID-19. World Health Organization - Heat and COVID-19The World Health Organization found that exposing yourself to the sun or temperatures higher than 25C (77 F) does not protect you from COVID-19.

Heat is the number one cause of weather-related deaths across the country, killing more people each year than tornadoes and hurricanes combined. Monday afternoon temperatures climbed into the upper 90s, but the heat index temperature, or feels like temperature, ranged between 105 and 109. The chances for afternoon storms to cool us down are minimal, so most of us are in for a sluggish return to the 70s this evening. Tuesday looks like it will be a little hotter, with feels like temperatures peaking around 110. Mid week afternoon storms will cool us down out of the dangerous zone, staring on Wednesday.