• Today

    Jul 23

    91°Lo 70°

    A t-storm late this afternoon

    Neutral weather for migraines
    • Hi
      RealFeel
      98°
    • UV
      7 - High
    • Cloud
      Cover
      46%
    more
  • Thu

    Jul 24

    78°Lo 60°

    A couple of t-storms; cooler

    Beneficial weather for migraines
    • Hi
      RealFeel
      82°
    • UV
      4 - Moderate
    • Cloud
      Cover
      89%
  • Fri

    Jul 25

    83°Lo 63°

    Sunny and pleasant

    Beneficial weather for migraines
    • Hi
      RealFeel
      88°
    • UV
      8 - Very High
    • Cloud
      Cover
      9%
    more
  • Sat

    Jul 26

    86°Lo 68°

    Sun mixing with clouds

    Beneficial weather for migraines
    • Hi
      RealFeel
      90°
    • UV
      8 - Very High
    • Cloud
      Cover
      28%
    more
  • Sun

    Jul 27

    86°Lo 67°

    Some sun, a t-storm possible

    Beneficial weather for migraines
    • Hi
      RealFeel
      92°
    • UV
      7 - High
    • Cloud
      Cover
      49%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Cloudy
Mostly Cloudy
T-storms
Mostly Cloudy
T-storms
Cloudy
Cloudy
T-storms
Temp (°F) 73° 73° 74° 75° 74° 76° 78° 76°
RealFeel® 74° 75° 76° 79° 79° 80° 82° 79°
Humidity 84% 81% 79% 76% 79% 74% 67% 77%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
34%
 
40%
 
58%
 
49%
 
58%
 
49%
 
48%
 
52%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 7 NNW 7 NNW 7 NNW 7 NNW 6 NNW 6 NNW 6 NNW 6 NNW
UV Index 2 3 3 4 4 4 3 2
Cloud Cover 89% 89% 90% 89% 89% 90% 90% 90%
Dew Point 68° 67° 67° 67° 67° 67° 67° 69°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Jul 24

more Historical Weather Data >
  Today Normal Record 7/24/2013
High 78° 88° 99° (2010) 84°
Low 60° 66° 48° (1985) 69°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:03 AM with 14:25 of sunlight, then sets at 8:28 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:09 AM with 14:33 of moolight, then sets at 6:42 PM

Top Story

Herndon Weather Report

DC: Another Cooldown to Follow Midweek Storms

July 23, 2014; 4:32 AM ET

Just when it was starting to feel like the dog days of summer again, another push of cool air is taking aim on the Washington, D.C., area. more >

Battling the Common Cold

Jun 23, 2014; 5:00 AM ET Marja Martinez talks about identifying and fighting the common cold.

Thu. Migraine Headache

Thu. UV Index