Weather History for Dulles Airport, VA

Change the Weather History Date:

Month of December, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 71 °F 48 °F 31 °F
Mean Temperature 67 °F 39 °F 25 °F
Min Temperature 62 °F 30 °F 17 °F
Degree Days  
Heating Degree Days (base 65) 40 26 0 793
Cooling Degree Days (base 65) 2 0 0 2
Growing Degree Days (base 50) 16 1 0 38
Dew Point  
Dew Point 62 °F 29 °F 5 °F
Precipitation  
Precipitation 1.27 in 0.21 in 0.00 in 5.58 in
Snowdepth 2.0 in 0.3 in 0.0 in -
Wind  
Wind 30 mph 6 mph 0 mph
Gust Wind 41 mph 22 mph 15 mph
Sea Level Pressure  
Sea Level Pressure 30.61 in 30.13 in 29.56 in

Monthly Weather History Graph

Monthly Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Dec. 15, 2013 Rise Set
Actual Time 7:21 AM EST 4:48 PM EST
Civil Twilight 6:51 AM EST 5:18 PM EST
Nautical Twilight 6:18 AM EST 5:52 PM EST
Astronomical Twilight 5:45 AM EST 6:24 PM EST
Moon 3:50 PM EST (12/15) 5:36 AM EST (12/15)
Length of Visible Light 10h 27m
Length of Day
9h 27m
Waxing Gibbous, 97% of the Moon is Illuminated
Dec 15
Waxing Gibbous
Dec 17
Full
Dec 25
Last Quarter
Jan 1
New
Jan 7
First Quarter

Weather History Calendar

Precipitation Actual month total 5.58 Normal Month Total: 2.96
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Partly Cloudy
Actual:
47 | 19 0.00
Average:
51 | 31 0.11
Overcast
Actual:
49 | 38 0.00
Average:
51 | 31 0.11
Partly Cloudy
Actual:
57 | 32 0.00
Average:
50 | 30 0.11
Mostly Cloudy
Actual:
56 | 32 0.00
Average:
50 | 30 0.11
Rain
Actual:
69 | 54 T
Average:
49 | 30 0.11
Rain
Actual:
65 | 38 0.97
Average:
49 | 29 0.11
Rain
Actual:
42 | 31 0.19
Average:
49 | 29 0.11
Snow
Actual:
31 | 26 0.77
Average:
48 | 29 0.10
Rain
Actual:
34 | 30 0.43
Average:
48 | 29 0.11
Snow
Actual:
37 | 25 0.30
Average:
47 | 28 0.11
Scattered Clouds
Actual:
39 | 17 0.00
Average:
47 | 28 0.10
Partly Cloudy
Actual:
32 | 17 0.00
Average:
47 | 28 0.11
Partly Cloudy
Actual:
41 | 17 0.00
Average:
46 | 28 0.09
Snow
Actual:
37 | 29 0.32
Average:
46 | 27 0.10
Partly Cloudy
Actual:
47 | 29 0.00
Average:
46 | 27 0.09
Mostly Cloudy
Actual:
38 | 29 0.00
Average:
46 | 27 0.10
Snow
Actual:
39 | 32 0.02
Average:
45 | 27 0.09
Snow
Actual:
42 | 25 T
Average:
45 | 26 0.09
Partly Cloudy
Actual:
60 | 23 0.00
Average:
45 | 26 0.09
Mostly Cloudy
Actual:
58 | 42 0.00
Average:
45 | 26 0.08
Partly Cloudy
Actual:
70 | 51 0.00
Average:
44 | 26 0.09
Rain
Actual:
71 | 62 0.51
Average:
44 | 26 0.09
Rain
Actual:
63 | 38 0.80
Average:
44 | 25 0.09
Partly Cloudy
Actual:
40 | 22 T
Average:
44 | 25 0.09
Scattered Clouds
Actual:
32 | 19 0.00
Average:
44 | 25 0.09
Partly Cloudy
Actual:
46 | 21 T
Average:
43 | 25 0.09
Scattered Clouds
Actual:
50 | 21 0.00
Average:
43 | 25 0.08
Partly Cloudy
Actual:
57 | 27 0.00
Average:
43 | 25 0.08
Rain
Actual:
49 | 37 1.27
Average:
43 | 25 0.08
Mostly Cloudy
Actual:
45 | 33 0.00
Average:
43 | 25 0.08
Partly Cloudy
Actual:
45 | 26 0.00
Average:
43 | 24 0.07
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 47 33 19 31 24 17 92 67 42 30.36 30.19 30.03 10 10 8 8 1 13 0.00  
2 49 44 38 34 32 30 82 69 56 30.01 29.93 29.89 10 8 5 8 2 10 0.00  
3 57 45 32 46 34 30 92 70 47 30.00 29.94 29.78 10 7 4 8 1 13 0.00  
4 56 44 32 50 41 31 96 81 66 30.09 30.04 30.00 10 7 4 9 3 14 0.00  
5 69 62 54 61 55 50 93 81 68 30.06 30.01 29.93 10 8 2 22 10 28 T Rain
6 65 52 38 62 44 35 96 91 85 30.19 30.04 29.88 10 6 2 20 12 25 0.97 Rain
7 42 37 31 36 29 19 92 72 51 30.56 30.35 30.16 10 8 2 20 10 28 0.19 Rain
8 31 29 26 27 24 17 92 75 58 30.61 30.48 30.33 10 3 0 12 6 15 0.77 Fog , Rain , Snow
9 34 32 30 31 30 27 92 89 85 30.32 30.14 30.05 10 2 0 10 3 20 0.43 Fog , Rain
10 37 31 25 31 28 16 100 75 49 30.24 30.07 30.01 10 4 0 16 7 21 0.30 Fog , Snow
11 39 28 17 25 18 14 88 66 44 30.42 30.31 30.25 10 10 10 13 2 17 0.00  
12 32 25 17 19 12 6 84 62 39 30.46 30.35 30.27 10 10 10 20 7 26 0.00  
13 41 29 17 24 16 11 78 54 30 30.32 30.27 30.23 10 10 10 10 3 16 0.00  
14 37 33 29 34 29 24 100 85 69 30.33 30.13 29.74 10 5 1 12 5 18 0.32 Rain , Snow
15 47 38 29 36 29 20 96 74 51 29.96 29.76 29.64 10 7 1 20 8 25 0.00  
16 38 34 29 24 22 18 75 65 54 30.19 30.11 29.96 10 10 10 15 5 18 0.00  
17 39 36 32 31 28 24 82 74 66 30.14 30.02 29.94 10 8 2 9 3 15 0.02 Snow
18 42 34 25 28 22 18 92 67 41 30.23 30.13 30.01 10 8 2 16 6 21 T Snow
19 60 42 23 28 24 20 88 58 28 30.21 30.15 30.08 10 10 10 15 6 20 0.00  
20 58 50 42 38 31 26 53 46 38 30.11 30.06 30.02 10 10 10 15 10 21 0.00  
21 70 61 51 59 49 39 73 62 51 30.02 29.96 29.90 10 10 10 28 13 38 0.00  
22 71 67 62 61 59 55 93 81 68 30.01 29.93 29.83 10 8 2 25 12 36 0.51 Rain
23 63 51 38 61 52 24 100 78 56 30.24 30.01 29.93 10 6 1 24 10 33 0.80 Rain
24 40 31 22 24 16 5 69 54 39 30.51 30.30 30.22 10 10 10 30 10 41 T  
25 32 26 19 16 9 6 63 50 36 30.59 30.50 30.38 10 10 10 12 5 15 0.00  
26 46 34 21 20 18 15 84 58 31 30.38 30.30 30.24 10 10 10 18 5 26 T  
27 50 36 21 22 18 15 84 55 26 30.44 30.38 30.32 10 10 10 14 4 20 0.00  
28 57 42 27 25 22 19 69 47 25 30.34 30.24 30.12 10 10 10 17 6 22 0.00  
29 49 43 37 45 39 24 96 67 38 30.10 29.79 29.56 10 6 0 18 6 24 1.27 Rain
30 45 39 33 36 29 19 92 73 54 30.19 30.04 29.83 10 10 10 17 7 25 0.00  
31 45 36 26 27 19 14 75 55 34 30.34 30.21 30.13 10 10 10 29 8 36 0.00