Weather History for Dulles Airport, VA

Month of December, 2012 — View Current Weather Conditions
Month of December, 2012
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Daily Weekly Monthly Custom
  Max Avg Min Sum
Temperature
Max Temperature 71 °F 50 °F 36 °F
Mean Temperature 60 °F 42 °F 30 °F
Min Temperature 48 °F 33 °F 21 °F
Degree Days
Heating Degree Days (base 65) 35 23 5 709
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 1 0 21
Dew Point
Dew Point 57 °F 33 °F 17 °F
Precipitation
Precipitation 1.41 in 0.10 in 0.00 in 2.87 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind
Wind 41 mph 7 mph 0 mph
Gust Wind 51 mph 26 mph 16 mph
Sea Level Pressure
Sea Level Pressure 30.48 in 30.03 in 29.30 in
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Date:
Astronomy
Dec. 08, 2012 Rise Set
Actual Time 7:16 AM EST 4:47 PM EST
Civil Twilight 6:46 AM EST 5:17 PM EST
Nautical Twilight 6:13 AM EST 5:50 PM EST
Astronomical Twilight 5:40 AM EST 6:23 PM EST
Moon 1:41 AM EST (12/8) 1:14 PM EST (12/8)
Length Of Visible Light 10h 30m
Length of Day
9h 31m
Waning Crescent, 28% of the Moon is Illuminated
Dec 8
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
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Monthly Calendar Weather History Overview
Print This Weather Calendar Precipitation: Actual month total 2.87 Normal month total 2.96
« Previous Month « 2011 December 2012 2013 » Next Month »
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
1 Fog
Actual: 47 | 28
Precip: 0.00
Average: 51 | 31
Precip: 0.11
2 Rain
Actual: 56 | 29
Precip: 0.02
Average: 51 | 31
Precip: 0.11
3 Partly Cloudy
Actual: 69 | 41
Precip: 0.00
Average: 50 | 30
Precip: 0.11
4 Partly Cloudy
Actual: 71 | 48
Precip: 0.00
Average: 50 | 30
Precip: 0.11
5 Partly Cloudy
Actual: 61 | 37
Precip: 0.00
Average: 49 | 30
Precip: 0.11
6 Partly Cloudy
Actual: 45 | 26
Precip: 0.00
Average: 49 | 29
Precip: 0.11
7 Rain
Actual: 51 | 36
Precip: 0.01
Average: 49 | 29
Precip: 0.11
8 Mostly Cloudy
Actual: 62 | 42
Precip: 0.00
Average: 48 | 29
Precip: 0.10
9 Rain
Actual: 53 | 47
Precip: 0.16
Average: 48 | 29
Precip: 0.11
10 Fog
Actual: 63 | 48
Precip: 0.00
Average: 47 | 28
Precip: 0.11
11 Rain
Actual: 52 | 38
Precip: 0.01
Average: 47 | 28
Precip: 0.10
12 Partly Cloudy
Actual: 45 | 35
Precip: 0.00
Average: 47 | 28
Precip: 0.11
13 Scattered Clouds
Actual: 49 | 26
Precip: 0.00
Average: 46 | 28
Precip: 0.09
14 Scattered Clouds
Actual: 53 | 21
Precip: 0.00
Average: 46 | 27
Precip: 0.10
15 Mostly Cloudy
Actual: 53 | 28
Precip: T
Average: 46 | 27
Precip: 0.09
16 Rain
Actual: 48 | 43
Precip: T
Average: 46 | 27
Precip: 0.10
17 Rain
Actual: 53 | 45
Precip: 0.04
Average: 45 | 27
Precip: 0.09
18 Rain
Actual: 58 | 31
Precip: T
Average: 45 | 26
Precip: 0.09
19 Partly Cloudy
Actual: 53 | 29
Precip: 0.00
Average: 45 | 26
Precip: 0.09
20 Rain
Actual: 52 | 32
Precip: 0.50
Average: 45 | 26
Precip: 0.08
21 Rain
Actual: 55 | 36
Precip: 0.42
Average: 44 | 26
Precip: 0.09
22 Partly Cloudy
Actual: 42 | 32
Precip: 0.00
Average: 44 | 26
Precip: 0.09
23 Scattered Clouds
Actual: 47 | 21
Precip: 0.00
Average: 44 | 25
Precip: 0.09
24 Snow
Actual: 38 | 23
Precip: 0.20
Average: 44 | 25
Precip: 0.09
25 Fog
Actual: 47 | 31
Precip: 0.00
Average: 44 | 25
Precip: 0.09
26 Snow
Actual: 39 | 31
Precip: 1.41
Average: 43 | 25
Precip: 0.09
27 Rain
Actual: 41 | 34
Precip: 0.01
Average: 43 | 25
Precip: 0.08
28 Partly Cloudy
Actual: 41 | 31
Precip: 0.00
Average: 43 | 25
Precip: 0.08
29 Snow
Actual: 42 | 33
Precip: 0.09
Average: 43 | 25
Precip: 0.08
30 Partly Cloudy
Actual: 40 | 29
Precip: 0.00
Average: 43 | 25
Precip: 0.08
31 Partly Cloudy
Actual: 36 | 23
Precip: 0.00
Average: 43 | 24
Precip: 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
2012 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 38 28 38 33 26 100 86 71 30.46 30.41 30.35 10 4 0 12 3 22 0.00 Fog
2 56 43 29 49 38 28 100 83 66 30.40 30.27 30.15 10 4 0 12 3 15 0.02 Fog , Rain
3 69 55 41 53 48 41 100 77 53 30.27 30.21 30.15 10 9 5 8 2 13 0.00  
4 71 60 48 53 50 47 96 72 47 30.23 30.15 30.01 10 10 7 15 6 18 0.00  
5 61 49 37 47 34 22 62 48 33 30.31 30.15 29.99 10 10 10 24 13 31 0.00  
6 45 36 26 29 22 20 81 59 37 30.40 30.32 30.25 10 10 10 14 5 16 0.00  
7 51 44 36 45 37 29 86 74 61 30.23 30.10 29.97 10 10 10 15 5 18 0.01 Rain
8 62 52 42 50 46 39 96 81 65 30.02 29.94 29.89 10 7 0 9 3 13 0.00  
9 53 50 47 50 48 46 100 93 86 30.18 30.11 29.97 7 3 0 13 4 17 0.16 Fog , Rain
10 63 56 48 57 54 44 100 89 78 29.95 29.72 29.59 10 6 0 25 9 32 0.00 Fog
11 52 45 38 40 33 27 76 61 46 30.24 29.98 29.71 10 10 10 25 9 32 0.01 Rain
12 45 40 35 27 26 25 70 58 45 30.44 30.37 30.24 10 10 10 13 6 15 0.00  
13 49 38 26 27 24 20 78 56 34 30.48 30.42 30.36 10 10 10 9 4 12 0.00  
14 53 37 21 27 24 19 92 61 29 30.35 30.30 30.23 10 10 9 8 2 10 0.00  
15 53 41 28 36 29 25 92 67 42 30.31 30.22 30.13 10 10 10 10 3 29 T  
16 48 46 43 45 42 39 96 81 65 30.13 29.96 29.86 10 8 4 16 4 21 T Rain
17 53 49 45 52 48 44 100 93 86 29.86 29.74 29.55 7 2 0 14 5 16 0.04 Fog , Rain
18 58 45 31 52 41 28 100 74 47 29.83 29.64 29.54 10 7 0 28 10 36 T Fog , Rain
19 53 41 29 36 32 26 92 71 50 30.18 29.97 29.81 10 10 10 21 7 25 0.00  
20 52 42 32 49 36 30 96 75 53 30.20 29.93 29.39 10 8 4 22 7 32 0.50 Rain
21 55 46 36 54 32 19 100 72 44 29.58 29.41 29.30 10 9 2 35 14 43 0.42 Rain
22 42 37 32 23 20 19 59 49 39 30.06 29.85 29.59 10 10 10 41 22 51 0.00  
23 47 34 21 23 20 17 84 58 31 30.07 30.00 29.91 10 10 10 13 3 17 0.00  
24 38 31 23 34 29 21 100 85 70 30.10 29.99 29.91 10 5 0 10 2 13 0.20 Fog , Rain , Snow
25 47 39 31 37 33 29 100 77 53 30.25 30.11 29.93 10 5 0 17 5 24 0.00 Fog
26 39 35 31 34 31 25 100 82 64 30.25 29.86 29.44 10 4 0 22 11 29 1.41 Fog , Rain , Snow
27 41 38 34 34 28 24 96 78 59 30.03 29.73 29.45 10 9 5 37 19 46 0.01 Rain
28 41 36 31 27 25 24 75 65 54 30.16 30.09 30.03 10 10 10 15 6 21 0.00  
29 42 38 33 35 30 26 96 80 64 30.01 29.76 29.59 10 7 1 35 8 43 0.09 Snow
30 40 35 29 25 21 18 69 55 40 30.35 30.15 29.85 10 10 10 37 18 47 0.00  
31 36 30 23 24 21 18 81 67 52 30.33 30.19 30.00 10 10 10 10 3 14 0.00  
Comma Delimited File