Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Warming atmosphere fueling heavier U.S. rainfall and rising flood risk. Get the details Chevron right
Gabrielle may become next hurricane as Atlantic heats up. Get the latest. Chevron right

Key Biscayne, FL

86°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Key Biscayne

Florida

86°
No results found.
Try searching for a city, zip code or point of interest.
settings
Key Biscayne, FL Weather
Today WinterCast Local {stormName} Tracker Hourly Daily 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 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Today's Weather

Sun, Sep 21

Intervals of clouds and sun with a couple of showers and a thunderstorm; humid Hi: 86°

Tonight: Cloudy and humid; a thunderstorm in spots late Lo: 80°

Current Weather

3:00 AM

86°F
RealFeel® 102°
Partly cloudy More Details
Wind NNE 6 mph
Wind Gusts 8 mph
Air Quality Fair

Looking Ahead

Thunderstorms, some heavy, tomorrow afternoon

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

4 AM 84°
rain drop 42%
5 AM 83°
rain drop 54%
6 AM 82°
rain drop 48%
7 AM 82°
rain drop 47%
8 AM 82°
rain drop 34%
9 AM 83°
rain drop 34%
10 AM 84°
rain drop 40%
11 AM 84°
rain drop 61%
12 PM 86°
rain drop 57%
1 PM 85°
rain drop 49%
2 PM 84°
rain drop 54%
3 PM 84°
rain drop 49%

10-Day Weather Forecast

Today

9/21

86° 80°

A shower and t-storm; humid

Night: Humid; a stray t-storm late

88%

Mon

9/22

85° 80°

Humid; heavy p.m. t-storms

Humid with a t-storm in spots

77%

Tue

9/23

87° 79°

Humid with a t-storm or two

Clouds breaking; humid

88%

Wed

9/24

86° 81°

Some sun, a t-storm; humid

Humid; a t-storm around late

56%

Thu

9/25

87° 81°

A t-storm around in the p.m.

Humid with a stray t-storm

55%

Fri

9/26

86° 80°

Mostly sunny and humid

Humid; showers around early

25%

Sat

9/27

87° 79°

A t-storm around in the p.m.

Mainly clear and humid

55%

Sun

9/28

88° 82°

Humid with a t-storm or two

Mainly clear and humid

59%

Mon

9/29

86° 81°

Humid; an afternoon shower

Mainly clear and humid

49%

Tue

9/30

87° 79°

Humid with a little rain

Humid with a little rain

55%

Sun & Moon

12 hrs 09 mins
Rise 7:09 AM
Set 7:18 PM
New Moon
Rise 6:54 AM
Set 7:14 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 Moderate 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

Weather News

AccuWeather study: Flood risk rising as US storms grow more intense

1 day ago

Weather News

Mudslides damage homes, bury roads and cars in Southern California

1 day ago

Hurricane

Gabrielle may become hurricane, 2 more areas being watched

12 hours ago

Weather Forecasts

Where’s the rain? Dry pattern grips the East

12 hours ago

Weather Forecasts

New storm eyes West for late September, bringing another round of rain

15 hours ago

More Stories

Featured Stories

Climate

The ‘blob’ is back — and it stretches across the entire North Pacific

1 day ago

Astronomy

Saturn to glow brighter than usual this weekend as it reaches oppositi...

1 day ago

Live Blog

Does this radar loop show insects or birds?

LATEST ENTRY

Expert debunks claim about weird weather radar

4 days ago

Health

The US is tracking 14 potential rabies outbreaks in 20 states.

2 days ago

Weather News

Mount St. Helens stirring up leftover ash 45 years after ‘the big one’

3 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 RealFeel® and RealFeel Shade™ 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 RealFeel® and RealFeel Shade™ 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
© 2025 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

...

...

...