Dulles Airport, VA

5:46 AM EDT on March 27, 2017 (GMT -0400)
Washington Dulles International

Weather History for KIAD - January, 2014

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Month of January, 2014

  Max Avg Min Sum
Temperature  
Max Temperature 56 °F 37 °F 15 °F
Mean Temperature 43 °F 28 °F 10 °F
Min Temperature 36 °F 18 °F -2 °F
Degree Days  
Heating Degree Days (base 65) 55 37 22 1162
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 49 °F 15 °F -14 °F
Precipitation  
Precipitation 0.74 in 0.10 in 0.00 in 2.33 in
Snowdepth 5.0 in 0.7 in 0.0 in -
Wind  
Wind 31 mph 8 mph 0 mph
Gust Wind 44 mph 23 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.65 in 30.07 in 29.44 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 16, 2014 Rise Set
Actual Time 7:26 AM EST 5:12 PM EST
Civil Twilight 6:57 AM EST 5:42 PM EST
Nautical Twilight 6:24 AM EST 6:14 PM EST
Astronomical Twilight 5:52 AM EST 6:46 PM EST
Moon 6:01 PM EST (1/16) 7:19 AM EST (1/16)
Length of Visible Light 10h 44m
Length of Day
9h 46m
Full, 100% of the Moon is Illuminated
Jan 16
Full
Jan 24
Last Quarter
Jan 30
New
Feb 6
First Quarter
Feb 14
Full

Daily Weather History & Observations

2014 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 46 35 23 28 22 17 81 61 41 30.43 30.31 30.13 10 10 10 12 4 16 0.00  
2 37 33 28 32 29 24 96 78 59 30.10 29.82 29.63 10 3 0 14 5 18 0.36 Fog , Rain , Snow
3 29 19 9 23 6 -1 85 62 39 30.51 30.17 29.68 10 8 2 31 13 44 T Snow
4 32 20 8 12 7 3 80 60 39 30.53 30.42 30.26 10 10 10 23 7 26 0.00  
5 37 31 24 36 26 12 96 73 50 30.27 30.09 29.69 10 4 0 13 3 17 0.23 Fog , Rain
6 44 28 11 42 23 -13 100 67 33 30.12 29.71 29.52 10 8 0 30 15 40 0.08 Fog , Rain , Snow
7 18 10 1 -3 -11 -14 63 47 30 30.46 30.34 30.13 10 10 10 20 10 30 0.00  
8 26 16 5 13 2 -7 83 58 33 30.62 30.53 30.48 10 10 10 14 5 20 0.00  
9 37 31 24 20 16 11 69 58 47 30.65 30.58 30.50 10 10 10 13 3 16 0.00  
10 35 32 29 34 31 21 100 82 63 30.53 30.36 30.15 10 2 0 8 2 9 0.53 Rain
11 51 43 34 49 41 34 100 97 93 30.11 29.72 29.44 10 4 0 17 6 23 0.74 Fog , Rain
12 50 39 28 36 29 26 85 66 46 30.12 29.91 29.61 10 10 10 21 8 30 0.00  
13 56 40 24 37 31 23 100 73 46 30.11 30.01 29.87 10 10 7 20 7 23 T Rain
14 50 43 36 45 42 37 100 83 66 29.92 29.82 29.73 10 6 0 21 6 32 0.17 Fog , Rain
15 49 42 34 38 34 27 100 79 57 29.98 29.94 29.88 10 6 0 18 6 25 0.01 Fog , Rain , Snow
16 37 32 26 30 20 14 89 65 40 30.04 29.97 29.91 10 9 3 15 6 20 T Snow
17 47 37 27 28 23 7 81 60 38 29.96 29.90 29.83 10 10 10 12 5 17 0.00  
18 36 28 20 30 16 6 92 66 39 30.01 29.91 29.83 10 9 2 24 13 32 T Rain , Snow
19 47 33 18 23 16 9 80 57 34 29.95 29.83 29.75 10 10 10 18 7 30 0.00  
20 54 41 27 25 23 22 69 49 28 29.88 29.74 29.66 10 10 10 20 9 24 0.00  
21 37 26 14 28 20 4 92 77 61 29.91 29.83 29.75 10 3 0 23 11 29 0.20 Fog , Snow
22 15 10 4 1 -5 -8 66 54 42 30.12 30.02 29.93 10 10 10 22 12 31 0.00  
23 23 11 -2 6 -2 -5 91 67 43 30.46 30.26 30.12 10 10 10 25 9 30 T  
24 21 13 5 -3 -6 -8 55 43 31 30.56 30.40 30.08 10 10 10 17 10 24 0.00  
25 31 25 18 20 6 -2 69 54 38 30.03 29.69 29.48 10 10 10 28 15 39 T  
26 32 21 9 17 5 0 84 58 31 29.93 29.83 29.72 10 10 10 21 7 31 T Snow
27 46 32 18 26 13 -2 64 49 33 30.20 29.85 29.66 10 10 10 31 14 38 0.00  
28 18 13 8 5 -8 -12 46 40 33 30.47 30.36 30.24 10 9 2 22 9 29 T Snow
29 23 15 6 6 -2 -8 83 55 27 30.39 30.29 30.23 10 9 2 18 8 26 0.01 Snow
30 31 18 4 6 1 -2 76 52 27 30.48 30.37 30.20 10 10 10 14 6 17 0.00  
31 48 36 23 19 10 5 63 41 19 30.24 30.17 30.12 10 10 10 10 3 14 0.00