Weather History for Dulles Airport, VA

Month of January, 2012 — View Current Weather Conditions
Month of January, 2012
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Daily Weekly Monthly Custom
  Max Avg Min Sum
Temperature
Max Temperature 66 °F 48 °F 31 °F
Mean Temperature 52 °F 38 °F 24 °F
Min Temperature 40 °F 28 °F 14 °F
Degree Days
Heating Degree Days (base 65) 41 27 13 835
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 3 0 0 3
Dew Point
Dew Point 59 °F 25 °F -3 °F
Precipitation
Precipitation 0.59 in 0.07 in 0.00 in 1.85 in
Snowdepth 1.0 in 0.1 in 0.0 in -
Wind
Wind 37 mph 8 mph 0 mph
Gust Wind 49 mph 23 mph 16 mph
Sea Level Pressure
Sea Level Pressure 30.60 in 30.06 in 29.32 in
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Date:
Astronomy
Jan. 01, 2012 Rise Set
Actual Time 7:28 AM EST 4:58 PM EST
Civil Twilight 6:58 AM EST 5:27 PM EST
Nautical Twilight 6:25 AM EST 6:01 PM EST
Astronomical Twilight 5:52 AM EST 6:33 PM EST
Moon 11:44 AM EST (1/1) 12:23 AM EST (1/1)
Length Of Visible Light 10h 29m
Length of Day
9h 29m
First Quarter, 54% of the Moon is Illuminated
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
Jan 23
New
Jan 30
First Quarter
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Monthly Calendar Weather History Overview
Print This Weather Calendar Precipitation: Actual month total 1.85 Normal month total 2.68
« Previous Month « 2011 January 2012 2013 » Next Month »
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
1 Rain
Actual: 57 | 31
Precip: 0.04
Average: 43 | 24
Precip: 0.08
2 Partly Cloudy
Actual: 46 | 29
Precip: 0.00
Average: 43 | 24
Precip: 0.08
3 Snow
Actual: 31 | 18
Precip: T
Average: 42 | 24
Precip: 0.07
4 Partly Cloudy
Actual: 33 | 14
Precip: 0.00
Average: 42 | 24
Precip: 0.08
5 Partly Cloudy
Actual: 47 | 25
Precip: 0.00
Average: 42 | 24
Precip: 0.09
6 Scattered Clouds
Actual: 63 | 27
Precip: 0.00
Average: 42 | 24
Precip: 0.08
7 Partly Cloudy
Actual: 64 | 32
Precip: 0.00
Average: 42 | 24
Precip: 0.09
8 Partly Cloudy
Actual: 50 | 30
Precip: 0.00
Average: 42 | 24
Precip: 0.08
9 Snow
Actual: 39 | 26
Precip: 0.09
Average: 42 | 24
Precip: 0.08
10 Fog
Actual: 53 | 28
Precip: 0.00
Average: 42 | 24
Precip: 0.08
11 Rain
Actual: 47 | 24
Precip: 0.59
Average: 42 | 24
Precip: 0.09
12 Rain
Actual: 59 | 40
Precip: 0.46
Average: 42 | 24
Precip: 0.09
13 Rain
Actual: 52 | 25
Precip: 0.04
Average: 42 | 24
Precip: 0.08
14 Partly Cloudy
Actual: 36 | 23
Precip: 0.00
Average: 42 | 24
Precip: 0.09
15 Scattered Clouds
Actual: 34 | 18
Precip: 0.00
Average: 42 | 24
Precip: 0.09
16 Rain
Actual: 41 | 17
Precip: 0.02
Average: 42 | 24
Precip: 0.08
17 Rain
Actual: 58 | 40
Precip: 0.14
Average: 42 | 24
Precip: 0.09
18 Partly Cloudy
Actual: 55 | 22
Precip: 0.00
Average: 42 | 24
Precip: 0.08
19 Partly Cloudy
Actual: 38 | 16
Precip: 0.00
Average: 42 | 24
Precip: 0.09
20 Snow
Actual: 35 | 25
Precip: 0.09
Average: 42 | 24
Precip: 0.09
21 Snow
Actual: 31 | 26
Precip: 0.15
Average: 43 | 24
Precip: 0.09
22 Snow
Actual: 31 | 28
Precip: T
Average: 43 | 24
Precip: 0.09
23 Rain
Actual: 43 | 30
Precip: 0.03
Average: 43 | 24
Precip: 0.09
24 Fog
Actual: 57 | 34
Precip: 0.00
Average: 43 | 24
Precip: 0.09
25 Partly Cloudy
Actual: 50 | 33
Precip: 0.00
Average: 43 | 24
Precip: 0.09
26 Rain
Actual: 52 | 40
Precip: 0.01
Average: 43 | 24
Precip: 0.09
27 Rain
Actual: 64 | 39
Precip: 0.19
Average: 43 | 24
Precip: 0.08
28 Scattered Clouds
Actual: 54 | 29
Precip: 0.00
Average: 43 | 24
Precip: 0.10
29 Snow
Actual: 48 | 29
Precip: T
Average: 43 | 24
Precip: 0.09
30 Scattered Clouds
Actual: 47 | 28
Precip: 0.00
Average: 43 | 24
Precip: 0.09
31 Partly Cloudy
Actual: 66 | 33
Precip: 0.00
Average: 44 | 24
Precip: 0.10
 
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
2012 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 57 44 31 45 36 26 96 73 49 30.13 29.96 29.77 10 10 6 25 7 30 0.04 Fog , Rain
2 46 38 29 26 17 13 59 47 35 29.97 29.92 29.86 10 10 10 29 13 40 0.00  
3 31 25 18 19 11 -3 73 50 27 30.28 30.09 29.96 10 9 1 32 15 44 T Snow
4 33 24 14 14 7 -1 64 53 41 30.33 30.18 30.00 10 10 10 14 5 18 0.00  
5 47 36 25 25 21 17 69 53 37 30.02 29.98 29.95 10 10 10 20 4 24 0.00  
6 63 45 27 30 26 21 75 51 27 29.95 29.89 29.83 10 10 10 16 7 21 0.00  
7 64 48 32 43 31 24 75 58 41 30.07 29.88 29.81 10 10 10 14 6 17 0.00  
8 50 40 30 30 26 23 78 60 41 30.34 30.25 30.09 10 10 10 16 5 28 0.00  
9 39 33 26 32 28 21 96 78 59 30.35 30.20 30.05 10 5 0 12 2 16 0.09 Fog , Snow
10 53 41 28 36 30 26 100 72 44 30.06 30.03 29.99 10 5 0 14 4 18 0.00 Fog
11 47 36 24 45 35 23 100 92 84 30.04 29.87 29.51 10 7 2 22 5 31 0.59 Rain
12 59 50 40 47 43 39 100 83 66 29.54 29.48 29.37 10 8 2 20 7 29 0.46 Rain
13 52 39 25 44 21 12 77 57 37 29.99 29.66 29.32 10 10 5 31 12 41 0.04 Rain
14 36 30 23 15 14 12 68 56 43 30.18 30.09 29.99 10 10 10 20 8 26 0.00  
15 34 26 18 14 11 6 73 53 33 30.60 30.42 30.18 10 10 10 17 6 22 0.00  
16 41 29 17 31 19 13 84 62 40 30.58 30.43 30.15 10 10 8 20 9 26 0.02 Rain
17 58 49 40 49 40 32 89 73 57 30.13 29.87 29.69 10 10 5 26 14 37 0.14 Rain
18 55 39 22 40 20 12 83 60 37 30.20 30.05 29.75 10 10 10 33 15 44 0.00  
19 38 27 16 21 16 13 84 62 40 30.22 30.10 29.93 10 10 10 18 7 24 0.00  
20 35 30 25 25 15 3 75 54 32 30.29 30.20 29.99 10 8 1 18 7 22 0.09 Snow
21 31 29 26 28 26 23 92 82 72 30.31 30.08 29.96 10 5 1 20 8 25 0.15 Rain , Snow
22 31 30 28 29 25 21 92 81 69 30.47 30.41 30.32 10 6 1 15 4 20 T Snow
23 43 37 30 41 34 28 100 95 89 30.35 30.11 29.91 10 1 0 18 5 24 0.03 Fog , Rain
24 57 46 34 43 39 31 100 78 55 30.22 30.08 29.95 10 7 0 13 3 18 0.00 Fog
25 50 42 33 34 31 28 82 66 49 30.38 30.28 30.21 10 10 10 13 5 16 0.00  
26 52 46 40 45 40 34 92 80 68 30.19 29.98 29.73 10 6 3 10 3 14 0.01 Rain
27 64 52 39 59 45 27 93 71 49 30.02 29.65 29.47 10 8 3 32 15 43 0.19 Rain
28 54 42 29 31 26 15 92 63 33 30.20 30.04 29.92 10 10 8 25 9 36 0.00  
29 48 39 29 30 13 9 75 49 23 30.29 30.19 30.08 10 10 10 37 10 49 T Snow
30 47 38 28 21 15 10 59 42 25 30.41 30.31 30.22 10 10 10 23 8 31 0.00  
31 66 50 33 30 26 21 69 47 24 30.23 30.15 30.06 10 10 10 18 9 24 0.00  
Comma Delimited File