• Tonight

    Jul 23

    Lo 70°

    A thunderstorm in spots early

    Migraine Headache Weather
    • Hi
      RealFeel
      102°
    • UV
      5 - High
    • Cloud
      Cover
      30%
    more
  • Sun

    Jul 24

    95°Lo 75°

    Mostly sunny and hot

    Neutral weather for migraines
    • Hi
      RealFeel
      103°
    • UV
      5 - High
    • Cloud
      Cover
      22%
  • Mon

    Jul 25

    98°Lo 74°

    Some sun, hot; a p.m. t-storm

    Neutral weather for migraines
    • Hi
      RealFeel
      107°
    • UV
      5 - High
    • Cloud
      Cover
      41%
    more
  • Tue

    Jul 26

    94°Lo 73°

    Clouds and sun; hot and humid

    Neutral weather for migraines
    • Hi
      RealFeel
      100°
    • UV
      5 - High
    • Cloud
      Cover
      70%
    more
  • Wed

    Jul 27

    93°Lo 71°

    Partly sunny and hot

    Beneficial weather for migraines
    • Hi
      RealFeel
      99°
    • UV
      5 - High
    • Cloud
      Cover
      41%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
4am
5am 6am 7am 8am 9am 10am 11am
  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Clear
Clear
Mostly Clear
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 73° 72° 70° 74° 77° 81° 84° 87°
RealFeel® 76° 75° 72° 77° 83° 89° 93° 97°
Humidity 86% 90% 95% 80% 75% 66% 56% 49%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
7%
 
7%
 
7%
 
5%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Wind (mph) 2 NNW 4 NNW 4 N 4 N 4 N 4 NNE 4 NE 4 E
UV Index 0 0 0 0 1 3 5 6
Cloud Cover 2% 5% 10% 14% 17% 17% 16% 17%
Dew Point 68° 69° 68° 68° 69° 69° 66° 66°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Jul 24

more Historical Weather Data >
  Today Normal Record 7/24/2015
High 95° 85° N/A 82°
Low 75° 69° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:03 AM with 14:24 of sunlight, then sets at 8:27 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:27 PM with 12:42 of moolight, then sets at 12:09 PM

Rockville Weather Report

'Virtually no relief' from heat in store for eastern US into end of July

July 23, 2016; 8:05 PM ET

Much of the eastern United States will continue to swelter with above-average temperatures into the end of the month. more >

Sun. Migraine Headache

Sun. UV Index