• Today

    Aug 29

    90°Lo 66°

    Mostly sunny and hot

    Neutral weather for migraines
    • Hi
      RealFeel
      98°
    • UV
      5 - High
    • Cloud
      Cover
      20%
  • Tue

    Aug 30

    86°Lo 65°

    Mostly sunny

    Beneficial weather for migraines
    • Hi
      RealFeel
      92°
    • UV
      5 - High
    • Cloud
      Cover
      23%
    more
  • Wed

    Aug 31

    88°Lo 67°

    A thunderstorm in spots

    Beneficial weather for migraines
    • Hi
      RealFeel
      97°
    • UV
      5 - High
    • Cloud
      Cover
      50%
    more
  • Thu

    Sep 1

    79°Lo 62°

    Not as warm

    Beneficial weather for migraines
    • Hi
      RealFeel
      86°
    • UV
      4 - Moderate
    • Cloud
      Cover
      45%
    more
  • Fri

    Sep 2

    78°Lo 59°

    Pleasant with plenty of sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      82°
    • UV
      5 - High
    • Cloud
      Cover
      8%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
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  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°F) 90° 90° 89° 88° 85° 82° 78° 77°
RealFeel® 98° 97° 93° 90° 86° 82° 78° 78°
Humidity 43% 44% 45% 49% 55% 59% 64% 71%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Rain
 
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5%
 
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5%
Snow
 
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Ice
 
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  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Wind (mph) 4 N 4 N 4 NNE 5 NNE 5 NE 5 NE 5 NE 6 NNE
UV Index 5 3 2 1 0 0 0 0
Cloud Cover 25% 25% 25% 25% 25% 27% 26% 26%
Dew Point 65° 66° 66° 66° 67° 66° 66° 67°
Middle Grid line 95 F Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F

Temperature History - Aug 29

more Historical Weather Data >
  Today Normal Record 8/29/2015
High 90° 82° N/A 88°
Low 66° 65° N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:35 AM with 13:08 of sunlight, then sets at 7:43 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:46 AM with 14:16 of moolight, then sets at 6:02 PM

Rockville Weather Report

September to start on cooler, less humid note in northeastern US

August 29, 2016; 4:28 AM ET

Brief relief from heat and humidity will arrive in the northeastern United States at the start of September. more >

Mon. Migraine Headache

Mon. UV Index