• Today

    Dec 20

    40°Lo 25°

    Some sun, then clouds

    Very Unlikely for a snow day
    • Snow
      2%
    • Ice
      0%
    • Snow
      0 in
  • Sun

    Dec 21

    46°Lo 28°

    Partly sunny

    Very Unlikely for a snow day
    • Snow
      2%
    • Ice
      0%
    • Snow
      0 in
    more
  • Mon

    Dec 22

    45°Lo 38°

    Rain

    Very Unlikely for a snow day
    • Snow
      28%
    • Ice
      0%
    • Snow
      0 in
    more
  • Tue

    Dec 23

    53°Lo 48°

    Mostly cloudy and damp

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Wed

    Dec 24

    63°Lo 41°

    Rain and a t-storm; breezy

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Mostly Sunny
Mostly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Mostly Cloudy
Cloudy
Mostly Cloudy
Temp (°F) 29° 32° 35° 37° 38° 39° 40° 40°
RealFeel® 31° 34° 39° 42° 43° 42° 42° 42°
Humidity 71% 64% 56% 51% 48% 46% 44% 44%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Wind (mph) 2 N 2 N 2 N 2 NNW 2 NNW 2 NW 2 N 2 N
UV Index 0 1 1 2 2 1 1 0
Cloud Cover 22% 26% 31% 36% 41% 89% 90% 87%
Dew Point 21° 21° 20° 21° 20° 20° 20° 20°
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 20

more Historical Weather Data >
  Today Normal Record 12/20/2013
High 40° 45° 66° (1889) 60°
Low 25° 31° (1942) 44°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:22 AM with 9:28 of sunlight, then sets at 4:50 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:37 AM with 10:21 of moolight, then sets at 3:58 PM

Accokeek Weather Report

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

December 20, 2014; 4:11 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 >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Sat. Snow Day Potential