Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
West faces hottest weather so far this year as heat dome builds. Click for the forecast. Chevron right

Port St. John, FL

88°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Port St. John

Florida

88°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Port St. John, FL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today

Hourly

 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

7 PM

86°
RealFeel® 98°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 40%
Chevron down
Mostly cloudy w/ t-storms

RealFeel Shade™98°

Heat Index100°

WindSE 9 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts10 mph

Humidity79%

Indoor Humidity79% (Dangerously Humid)

Dew Point79° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover61%

Visibility4 mi

Cloud Ceiling6000 ft

8 PM

83°
RealFeel® 89°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 41%
Chevron down
Mostly cloudy

RealFeel Shade™89°

Heat Index90°

WindSE 8 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts9 mph

Humidity74%

Indoor Humidity74% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover80%

Visibility10 mi

Cloud Ceiling18000 ft

9 PM

82°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 47%
Chevron down
Mostly cloudy

Heat Index89°

WindSSE 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity81%

Indoor Humidity81% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover88%

Visibility10 mi

Cloud Ceiling22000 ft

10 PM

80°
RealFeel® 86°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

Heat Index86°

WindSSE 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity86%

Indoor Humidity86% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover92%

Rain0.04 in

Visibility6 mi

Cloud Ceiling4000 ft

11 PM

79°
RealFeel® 88°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

Heat Index84°

WindS 6 mph

Air QualityFair

Wind Gusts8 mph

Humidity89%

Indoor Humidity89% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Port St. John

AccuWeather's hourly forecast for Port St. John provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 86° with a RealFeel® of 98°, mostly cloudy w/ t-storms with a 40% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

Further Ahead

Tomorrow

Thursday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Atlantic hurricane season off to a slow start as El Niño strengthens

7 hours ago

Severe Weather

Tornado in Alaska? Video shows rare funnel cloud in remote landscape

6 hours ago

Weather Forecasts

Heat dome to broil western U.S. ahead of North America monsoon

3 hours ago
Live Blog

Live: World Cup 2026 weather updates

LATEST ENTRY

Quarterfinals to commence with heat on Thursday

9 hours ago

Severe Weather

Storms with flooding, high winds poised in central and southeastern US

3 hours ago

 More Stories

Featured Stories

Severe Weather

Storms, heat and floods disrupt America’s 250th birthday celebrations

1 day ago

Health

NYC Legionnaires' disease outbreak jumps to 14 confirmed cases

1 day ago

Weather News

Mother dies trying to save son from Tennessee floodwaters

1 day ago

Travel

Plane makes hard landing into New York’s East River, officials say

1 day ago

Weather News

Toll from Venezuela earthquakes rises to 3,342, more than 16K injured

1 day ago
World North America United States Florida Port St. John

Weather Near Port St. John:

  • Deltona, FL
  • Melbourne, FL
  • Orlando, FL
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...