Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Arthur to bring significant flooding to the Southeast. Click for the forecast. Chevron right

Key Biscayne, FL

83°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Key Biscayne

Florida

83°
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
Key Biscayne, 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
Heat Advisory

Today's Weather

Thu, Jun 18

Humid with sun and clouds; a thunderstorm on the prowl this afternoon Hi: 86°

Tonight: A thunderstorm in spots this evening; otherwise, partly cloudy and humid Lo: 83°

Current Weather

11:37 AM

83°F
RealFeel® 102°
Partly sunny More Details
RealFeel Shade™ 91°
Heat Index 92°
Wind SSE 6 mph
Wind Gusts 9 mph
Air Quality Fair

Key Biscayne Weather Radar

Key Biscayne Weather Radar
Static Radar Temporarily Unavailable
Thank you for your patience as we work to get everything up and running again.
Refresh Page
Clouds
Temperature

Hourly Weather

12 PM 85°
rain drop 20%
1 PM 85°
rain drop 18%
2 PM 86°
rain drop 15%
3 PM 86°
rain drop 15%
4 PM 86°
rain drop 19%
5 PM 86°
rain drop 43%
6 PM 85°
rain drop 47%
7 PM 85°
rain drop 51%
8 PM 83°
rain drop 40%
9 PM 83°
rain drop 34%
10 PM 83°
rain drop 37%
11 PM 83°
rain drop 43%

10-Day Weather Forecast

Today

6/18

86° 83°

A t-storm around in the p.m.

Night: Humid; a t-storm around early

55%

Fri

6/19

88° 81°

A t-storm around in the p.m.

Mainly clear and humid

55%

Sat

6/20

88° 81°

Humid; an afternoon t-storm

Humid; a stray t-storm early

55%

Sun

6/21

86° 82°

Humid with a stray t-storm

Mainly clear and humid

55%

Mon

6/22

87° 81°

Humid with a t-storm in spots

Partly cloudy and humid

55%

Tue

6/23

88° 82°

Humid with clouds and sun

Partly cloudy and humid

25%

Wed

6/24

87° 81°

A t-storm around in the p.m.

An evening t-storm; humid

55%

Thu

6/25

88° 82°

Mostly sunny and humid

A few evening showers

6%

Fri

6/26

87° 81°

Humid with plenty of sunshine

Mainly clear and humid

3%

Sat

6/27

86° 81°

Partly sunny and humid

Humid; a little rain late

8%

Sun & Moon

13 hrs 45 mins
Rise 6:29 AM
Set 8:14 PM
Waxing Crescent
Rise 10:13 AM
Set 11:44 PM

Air Quality

See More
Air Quality Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.

Allergy Outlook

See All
Tree Pollen Low Data is not supported in this location Ragweed Pollen Low Data is not supported in this location Mold Low Data is not supported in this location Grass Pollen Low Data is not supported in this location Dust & Dander Extreme Data is not supported in this location

Top Stories

Hurricane

Arthur makes landfall in Texas, to raise flood risk across southern US

3 hours ago

Severe Weather

Tornadoes, winds rip through Illinois causing widespread damage

1 hour ago

Severe Weather

Severe storms to deliver strong winds, flash flooding on Thursday

27 minutes ago

Weather News

Tropical Storm Arthur swamps cars in Texas as flood threat escalates

9 minutes ago

Live Blog

Live: World Cup 2026 weather updates

LATEST ENTRY

Tropical Storm Arthur may impact travel to Houston World Cup match

1 day ago

More Stories

Featured Stories

Weather News

South Florida wildfire sending smoke into nearby communities

23 minutes ago

Recreation

Free climber dies after falling into volcanic crater in Yemen

22 hours ago

Astronomy

Meteorological summer vs. astronomical summer explained

3 hours ago

Health

Pickle is the pumpkin spice of summer

2 days ago

Weather News

Submersible ride revealed whale graveyard. It holds more than bones

2 days ago

World North America United States Florida Key Biscayne

Weather Near Key Biscayne:

  • Fort Lauderdale, FL
  • Hialeah, FL
  • Miami, 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

...

...

...