• Early AM

    Dec 21

    Lo 28°

    Clearing

    Bicycling Weather
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      2 mph
    more
  • Today

    Dec 21

    42°Lo 29°

    Sunshine and patchy clouds

    Good for biking
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      4 mph
  • Mon

    Dec 22

    43°Lo 39°

    Rain

    Poor for biking
    • Precip
      75%
    • Hours of Precip
      5.5
    • Wind
      Gust
      7 mph
    more
  • Tue

    Dec 23

    50°Lo 48°

    Mostly cloudy and milder

    Good for biking
    • Precip
      25%
    • Hours of Precip
      0
    • Wind
      Gust
      7 mph
    more
  • Wed

    Dec 24

    63°Lo 46°

    Rain and a t-storm; breezy

    Poor for biking
    • Precip
      75%
    • Hours of Precip
      6
    • Wind
      Gust
      32 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
3pm
4pm 5pm 6pm 7pm 8pm 9pm 10pm
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Clear
Mostly Clear
Clear
Clear
Mostly Clear
Mostly Clear
Temp (°F) 41° 39° 36° 34° 32° 31° 31° 30°
RealFeel® 43° 40° 37° 34° 33° 32° 31° 30°
Humidity 46% 51% 58% 67% 72% 76% 78% 80%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
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0%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Wind (mph) 2 NE 2 NE 2 ENE 2 NE 2 NE 2 ENE 2 ENE 2 ENE
UV Index 1 0 0 0 0 0 0 0
Cloud Cover 25% 25% 25% 25% 0% 7% 14% 21%
Dew Point 22° 22° 23° 24° 24° 24° 25° 25°
Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F

Temperature History - Dec 21

more Historical Weather Data >
  Today Normal Record 12/21/2013
High 42° 47° N/A 71°
Low 29° 30° N/A 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:20 AM with 9:31 of sunlight, then sets at 4:51 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:35 AM with 10:20 of moolight, then sets at 4:55 PM

Montross Weather Report

DC: Quiet Weekend Weather to be Followed by Christmas Eve Storm

December 21, 2014; 1:50 AM ET

Following benign weather this weekend, a major storm will affect Washington, D.C., much of the East and Midwest on Christmas Eve. more >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.