• Today

    Jul 30

    83°Lo 71°

    Showers and a heavier t-storm

    Fair for lawn mowing
    • Hours of Precip
      4
    • Precip
      70%
    • Hi
      RealFeel
      98°
    more
  • Sun

    Jul 31

    87°Lo 71°

    Couple of thunderstorms

    Poor for lawn mowing
    • Hours of Precip
      3
    • Precip
      60%
    • Hi
      RealFeel
      103°
  • Mon

    Aug 1

    88°Lo 68°

    Clouds and sun with a t-storm

    Fair for lawn mowing
    • Hours of Precip
      1
    • Precip
      55%
    • Hi
      RealFeel
      99°
    more
  • Tue

    Aug 2

    85°Lo 64°

    Periods of sun

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      6%
    • Hi
      RealFeel
      89°
    more
  • Wed

    Aug 3

    85°Lo 66°

    Periods of sun

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      25%
    • Hi
      RealFeel
      94°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
T-storms
Partly Cloudy
Partly Cloudy
Temp (°F) 74° 76° 79° 82° 84° 81° 87° 84°
RealFeel® 86° 90° 95° 100° 101° 94° 103° 96°
Humidity 100% 91% 84% 78% 70% 84% 68% 68%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
47%
 
34%
 
16%
 
16%
 
21%
 
52%
 
48%
 
44%
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) 2 S 2 SSW 2 WSW 4 S 4 S 5 SSE 5 S 5 S
UV Index 2 3 5 6 6 5 5 3
Cloud Cover 88% 83% 77% 71% 66% 70% 68% 73%
Dew Point 74° 73° 73° 74° 73° 76° 75° 73°
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

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2015
High 87° 84° N/A 86°
Low 71° 69° N/A 63°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:09 AM with 14:11 of sunlight, then sets at 8:20 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:55 AM with 14:37 of moolight, then sets at 6:32 PM

Rockville Weather Report

Soaking storms to elevate flash flood threat in northeastern US this weekend

July 30, 2016; 7:21 AM ET

Rounds of drenching showers and heavy thunderstorms will heighten the risk of flash flooding across the northeastern United States through the final weekend of July. more >

Sun. Overnight Freeze

Sun. Degree Days

Sun. Evapotranspiration