For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

Heat dome to bring 90 to 100-degree temps. See when the heat will peak.

St Marks, FL

Location

Location News Videos

Use Current Location

Recent

St Marks

Florida

No results found.

Try searching for a city, zip code or point of interest.

Create Your Account Unlock extended daily and hourly forecasts — all with your free account.

Have an account already? Log In

settings

St Marks, 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

Hourly

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

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

4 PM

96°

RealFeel® 105°

Very Hot

RealFeel Guide

Very Hot

101° to 107°

Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.

7%

Partly sunny

Heat Advisory

1:00 PM Sunday - 7:00 PM Sunday

RealFeel Shade™100°

Heat Index104°

WindS 7 mph

Air QualityFair

Max UV Index4.9 (Moderate)

Wind Gusts12 mph

Humidity44%

Indoor Humidity44% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover39%

Visibility10 mi

Cloud Ceiling33400 ft

5 PM

95°

RealFeel® 103°

Very Hot

RealFeel Guide

Very Hot

101° to 107°

Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.

7%

Intermittent clouds

Heat Advisory

1:00 PM Sunday - 7:00 PM Sunday

RealFeel Shade™99°

Heat Index103°

WindS 8 mph

Air QualityFair

Max UV Index3.3 (Moderate)

Wind Gusts15 mph

Humidity48%

Indoor Humidity48% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover54%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

93°

RealFeel® 101°

Very Hot

RealFeel Guide

Very Hot

101° to 107°

Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.

7%

Intermittent clouds

Heat Advisory

1:00 PM Sunday - 7:00 PM Sunday

RealFeel Shade™98°

Heat Index102°

WindSSW 8 mph

Air QualityFair

Max UV Index2.0 (Low)

Wind Gusts14 mph

Humidity52%

Indoor Humidity52% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover54%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

91°

RealFeel® 99°

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.

5%

Intermittent clouds

RealFeel Shade™99°

Heat Index101°

WindSSW 7 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts12 mph

Humidity57%

Indoor Humidity57% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

89°

RealFeel® 96°

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.

0%

Mostly sunny

RealFeel Shade™96°

Heat Index99°

WindSSW 7 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts8 mph

Humidity61%

Indoor Humidity61% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

86°

RealFeel® 94°

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.

0%

Mostly clear

Heat Index95°

WindSSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity68%

Indoor Humidity68% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

83°

RealFeel® 90°

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.

0%

Mostly clear

Heat Index90°

WindSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity73%

Indoor Humidity73% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover19%

Visibility10 mi

Cloud Ceiling30000 ft

11 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.

0%

Mostly clear

Heat Index85°

WindWSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity78%

Indoor Humidity78% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for St. Marks

AccuWeather's hourly forecast for St. Marks provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 96° with a RealFeel® of 105°, partly sunny with a 7% 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

Tuesday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Heat dome to bring 90-100 F temperatures to 200 million in US

1 hour ago

Hurricane

Massive Saharan dust clouds to approach Florida, Gulf this weekend

3 hours ago

Live: World Cup 2026 weather updates

LATEST ENTRY

RealFeel® Temperatures near 105 degrees For Brazil vs. Japan match

6 hours ago

Hurricane

Building heat dome could spark tropical development near southern U.S.

2 hours ago

Weather Forecasts

Southwest wildfire danger remains high through Fourth of July week

1 hour ago

Featured Stories

Weather News

Venezuela death toll surges as crews search after earthquakes

6 hours ago

Weather News

At least 4 dead in Kentucky floods with more rainfall on the way

6 hours ago

Travel

Small aircraft crashes into Beijing’s tallest skyscraper

2 days ago

Recreation

Snake hunters compete for $25,000 wrangling pythons in Florida

3 days ago

Weather News

Utah wildfires force evacuations as crews work in hot, windy weather

2 days ago

World North America United States Florida St Marks

Weather Near St Marks:

Tallahassee, FL
Thomasville, GA
Valdosta, GA

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

...

...

...