Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
A May heat wave will complete the spring weather whiplash in the East. Click for details. Chevron right
Severe thunderstorms, some with tornadoes will prowl the Central states. Click to see where, when. Chevron right

Herndon, VA

61°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Herndon

Virginia

61°
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.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Herndon, VA 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
Sunday, May 17

Day

5/17
88°Hi
RealFeel® 92°
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
RealFeel Shade™ 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
Very warm with clouds and sun; a thunderstorm in spots this afternoon; possible danger of dehydration and heatstroke while doing strenuous activities

Max UV Index9.0 (Very High)

AccuLumen Brightness Index™6 (Medium)

WindWSW 6 mph

Wind Gusts13 mph

Probability of Precipitation55%

Probability of Thunderstorms33%

Precipitation0.04 in

Rain0.04 in

Hours of Precipitation0.5

Hours of Rain0.5

Cloud Cover67%

Morning

Afternoon

Night

5/17
62°Lo
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Partly cloudy

WindS 5 mph

Wind Gusts8 mph

Probability of Precipitation17%

Probability of Thunderstorms4%

Precipitation0.00 in

Cloud Cover30%

Evening

Overnight

Sun & Moon

14 hrs 22 mins
Rise 5:55 AM
Set 8:17 PM
Waxing Crescent
Rise 6:04 AM
Set 9:57 PM

Temperature History

5/17
High
Low
Forecast
88°
62°
Average
75°
53°
Last Year
86°
65°
Record
92°
2017
6°
2022

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Climate

Super El Niño could strain food and water supplies around the world

2 days ago

Severe Weather

High-risk severe weather setup to focus on Plains, Midwest into Monday

14 minutes ago

Weather Forecasts

Heat wave to complete spring weather whiplash, worsen drought in East

14 minutes ago

Severe Weather

Deadly storms, flooding rain kill at least 96 in India

1 day ago

Winter Weather

Winter to return to Colorado, Wyoming with more May mountain snow

39 minutes ago

 More Stories

Featured Stories

Hurricane

El Nino to fuel Pacific hurricane season, raise risks for California

1 day ago

Health

Wet spring, more mice? The weather link behind rare hantavirus risk

2 days ago

Climate

Turkmenistan's fiery 'Gates of Hell' crater is dimming

2 days ago

Weather News

Here's how New York residents can get free A/C this summer

3 days ago

Recreation

Brain-eating amoeba found in hot springs at 3 National Parks: study

4 days ago
World North America United States Virginia Herndon

Weather Near Herndon:

  • Alexandria, VA
  • Germantown, MD
  • Washington, DC
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

...

...

...