• Tonight

    Jul 11

    Lo 65°

    Patchy clouds

    Migraine Headache Weather
    • Hi
      RealFeel
      90°
    • UV
      8 - Very High
    • Cloud
      Cover
      42%
  • Sat

    Jul 12

    87°Lo 68°

    Partly sunny

    Beneficial weather for migraines
    • Hi
      RealFeel
      91°
    • UV
      8 - Very High
    • Cloud
      Cover
      28%
    more
  • Sun

    Jul 13

    90°Lo 72°

    A stray afternoon t-storm

    Neutral weather for migraines
    • Hi
      RealFeel
      93°
    • UV
      8 - Very High
    • Cloud
      Cover
      39%
    more
  • Mon

    Jul 14

    87°Lo 71°

    Showers and a heavier t-storm

    Beneficial weather for migraines
    • Hi
      RealFeel
      95°
    • UV
      6 - High
    • Cloud
      Cover
      69%
    more
  • Tue

    Jul 15

    84°Lo 63°

    A couple of heavy t-storms

    Beneficial weather for migraines
    • Hi
      RealFeel
      94°
    • UV
      6 - High
    • Cloud
      Cover
      77%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
1pm
2pm 3pm 4pm 5pm 6pm 7pm 8pm
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Forecast
Partly Sunny
Partly Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Mostly Sunny
Temp (°F) 79° 81° 83° 84° 85° 83° 81° 78°
RealFeel® 89° 88° 90° 89° 87° 83° 79° 76°
Humidity 59% 54% 50% 50% 47% 50% 56% 64%
   
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Rain
 
9%
 
11%
 
11%
 
11%
 
11%
 
11%
 
10%
 
7%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Wind (mph) 3 NE 4 E 3 ENE 3 ENE 3 E 4 E 4 E 4 E
UV Index 8 6 6 5 3 1 0 0
Cloud Cover 41% 63% 48% 37% 40% 38% 39% 20%
Dew Point 64° 63° 63° 63° 62° 63° 64° 64°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F

Temperature History - Jul 11

more Historical Weather Data >
  Today Normal Record 7/11/2013
High 85° 88° 98° (1988) 87°
Low 65° 66° 52° (1983) 69°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:53 AM with 14:43 of sunlight, then sets at 8:36 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:45 PM with 10:25 of moolight, then sets at 6:10 AM

Top Story

Herndon Weather Report

DC: Severe Storm, Flooding Threat to Precede Cooldown

July 11, 2014; 5:03 PM ET

After only spotty rainfall this weekend in the Washington, D.C., area, the risk of severe thunderstorms and flash flooding will ramp up quickly early next week. more >

Battling the Common Cold

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

Fri. Migraine Headache

Fri. UV Index