• Today

    Sep 18

    74°Lo 53°

    Clouds giving way to some sun

    Poor for skiing
    • Rain
      0 in
    • Precip
      25%
    • Hours of Precip
      0
  • Fri

    Sep 19

    72°Lo 57°

    Fog in the a.m.; partly sunny

    Poor for skiing
    • Rain
      0 in
    • Precip
      7%
    • Hours of Precip
      0
    more
  • Sat

    Sep 20

    78°Lo 59°

    Intervals of clouds and sun

    Poor for skiing
    • Rain
      0 in
    • Precip
      9%
    • Hours of Precip
      0
    more
  • Sun

    Sep 21

    82°Lo 60°

    Warm with partial sunshine

    Poor for skiing
    • Rain
      0 in
    • Precip
      24%
    • Hours of Precip
      0
    more
  • Mon

    Sep 22

    74°Lo 50°

    Chance of a shower

    Poor for skiing
    • Rain
      0 in
    • Precip
      30%
    • Hours of Precip
      0
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
10am
11am 12pm 1pm 2pm 3pm 4pm 5pm
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 63° 67° 70° 71° 72° 73° 74° 73°
RealFeel® 66° 69° 73° 74° 77° 76° 75° 72°
Humidity 74% 66% 60% 56% 52% 49% 47% 48%
   
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
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%
   
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Wind (mph) 1 N 2 N 2 NNW 2 NNW 2 NNW 2 NNW 3 N 3 N
UV Index 2 3 3 3 4 3 2 1
Cloud Cover 87% 88% 89% 91% 55% 60% 61% 59%
Dew Point 55° 55° 55° 54° 54° 53° 53° 53°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 74° 79° 91° (1927) 74°
Low 53° 62° 45° (1937) 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:52 AM with 12:21 of sunlight, then sets at 7:13 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:45 AM with 14:15 of moolight, then sets at 4:00 PM

Top Story

Rockville Weather Report

DC: Remainder of Week to Be Dry, Cool

September 18, 2014; 7:11 AM ET

Rainfall will be scarce around Washington, D.C., this week, but cool air will be plentiful. more >

Tourism of Doom: Traveling to Endangered Places

Aug 30, 2012; 5:00 AM ET If you're longing to ski the Alps or swim in the Great Barrier Reef, you may be running out of time. A changing climate may beat you to the punch line. Valerie Smock has more.

Radar & Satellite

48 Hour Precipitation Forecast

Thu. Ski Weather