Weather History for Washington, DC

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 72 °F 52 °F 41 °F
Mean Temperature 61 °F 46 °F 35 °F
Min Temperature 49 °F 38 °F 29 °F
Degree Days  
Heating Degree Days (base 65) 30 19 4 603
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 1 0 33
Dew Point  
Dew Point 59 °F 35 °F 16 °F
Precipitation  
Precipitation 1.42 in 0.10 in 0.00 in 3.03 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 36 mph 8 mph 0 mph
Gust Wind 49 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.48 in 30.04 in 29.29 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 28, 2012 Rise Set
Actual Time 7:25 AM EST 4:54 PM EST
Civil Twilight 6:56 AM EST 5:24 PM EST
Nautical Twilight 6:22 AM EST 5:57 PM EST
Astronomical Twilight 5:50 AM EST 6:29 PM EST
Moon 5:28 PM EST (12/28) 7:19 AM EST (12/28)
Length of Visible Light 10h 28m
Length of Day
9h 28m
Full, 100% of the Moon is Illuminated
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Weather History Calendar

Precipitation Actual month total 3.03 Normal Month Total: 3.05
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
51 | 37 0.00
Average:
52 | 37 0.11
Rain
Actual:
57 | 37 0.02
Average:
51 | 36 0.11
Fog
Actual:
71 | 44 0.00
Average:
51 | 36 0.11
Mostly Cloudy
Actual:
72 | 49 0.00
Average:
50 | 36 0.10
Rain
Actual:
63 | 40 T
Average:
50 | 35 0.11
Partly Cloudy
Actual:
44 | 35 0.00
Average:
50 | 35 0.11
Rain
Actual:
50 | 37 0.05
Average:
49 | 35 0.11
Fog
Actual:
54 | 48 0.00
Average:
49 | 34 0.10
Rain
Actual:
52 | 49 0.14
Average:
49 | 34 0.11
Rain
Actual:
63 | 49 0.01
Average:
48 | 34 0.11
Rain
Actual:
62 | 41 0.07
Average:
48 | 34 0.11
Overcast
Actual:
47 | 39 0.00
Average:
48 | 33 0.11
Partly Cloudy
Actual:
50 | 35 0.00
Average:
47 | 33 0.09
Scattered Clouds
Actual:
52 | 30 0.00
Average:
47 | 33 0.10
Mostly Cloudy
Actual:
54 | 37 0.00
Average:
47 | 33 0.10
Rain
Actual:
52 | 46 0.09
Average:
46 | 32 0.09
Rain
Actual:
55 | 48 0.07
Average:
46 | 32 0.10
Rain
Actual:
62 | 43 T
Average:
46 | 32 0.09
Scattered Clouds
Actual:
54 | 36 0.00
Average:
46 | 32 0.10
Rain
Actual:
53 | 41 0.56
Average:
45 | 31 0.09
Rain
Actual:
59 | 39 0.26
Average:
45 | 31 0.09
Partly Cloudy
Actual:
45 | 35 0.00
Average:
45 | 31 0.10
Partly Cloudy
Actual:
47 | 29 0.00
Average:
45 | 31 0.09
Snow
Actual:
41 | 31 0.14
Average:
45 | 31 0.10
Mostly Cloudy
Actual:
51 | 34 0.00
Average:
44 | 30 0.09
Snow
Actual:
45 | 33 1.42
Average:
44 | 30 0.09
Rain
Actual:
43 | 37 0.02
Average:
44 | 30 0.09
Mostly Cloudy
Actual:
45 | 36 0.00
Average:
44 | 30 0.09
Snow
Actual:
44 | 34 0.18
Average:
44 | 30 0.09
Partly Cloudy
Actual:
42 | 32 0.00
Average:
44 | 30 0.08
Partly Cloudy
Actual:
41 | 29 0.00
Average:
44 | 29 0.08
 

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 51 44 37 40 37 33 92 78 63 30.47 30.41 30.35 10 5 2 12 2 15 0.00  
2 57 47 37 48 41 36 92 77 61 30.41 30.30 30.15 10 5 1 13 5 15 0.02 Rain
3 71 58 44 53 49 44 93 73 53 30.27 30.22 30.15 10 10 7 10 3 10 0.00 Fog
4 72 61 49 52 50 47 93 70 47 30.25 30.17 30.02 10 10 9 16 8 21 0.00  
5 63 52 40 48 35 22 72 53 33 30.32 30.15 30.00 10 10 10 22 13 28 T Rain
6 44 40 35 27 22 20 64 52 39 30.41 30.33 30.27 10 10 10 16 7 18 0.00  
7 50 44 37 47 38 28 93 79 64 30.26 30.12 29.99 10 10 4 12 6 14 0.05 Rain
8 54 51 48 50 48 46 100 92 83 30.03 29.95 29.91 10 5 0 14 5 20 0.00 Fog
9 52 51 49 50 48 45 93 85 77 30.18 30.10 30.00 10 4 0 16 7 21 0.14 Fog , Rain
10 63 56 49 59 53 46 100 89 78 29.98 29.76 29.60 10 3 0 15 7 20 0.01 Fog , Rain
11 62 52 41 55 34 27 87 66 44 30.24 29.98 29.65 10 10 6 26 12 36 0.07 Rain
12 47 43 39 28 27 24 64 53 42 30.45 30.38 30.24 10 10 10 14 7 17 0.00  
13 50 43 35 26 24 21 59 47 34 30.48 30.42 30.37 10 10 10 15 7 18 0.00  
14 52 41 30 35 30 24 79 62 44 30.36 30.30 30.23 10 10 8 10 5 17 0.00  
15 54 46 37 36 33 31 85 66 46 30.32 30.24 30.15 10 10 10 10 4 12 0.00  
16 52 49 46 47 44 39 93 77 61 30.14 29.98 29.86 10 8 6 9 4 12 0.09 Rain
17 55 52 48 52 49 46 96 91 86 29.87 29.74 29.56 6 4 2 13 4 15 0.07 Rain
18 62 53 43 54 41 29 93 67 41 29.83 29.64 29.55 10 9 5 25 10 35 T Rain
19 54 45 36 36 33 30 85 68 50 30.19 29.98 29.83 10 10 10 23 8 29 0.00  
20 53 47 41 50 36 31 93 73 53 30.22 29.97 29.47 10 8 3 20 6 28 0.56 Rain
21 59 49 39 55 32 18 93 66 39 29.58 29.41 29.29 10 9 2 28 16 38 0.26 Rain
22 45 40 35 22 20 18 52 43 33 30.06 29.84 29.59 10 10 10 31 17 43 0.00  
23 47 38 29 29 21 16 70 51 31 30.09 30.01 29.93 10 10 10 15 5 20 0.00  
24 41 36 31 36 31 25 92 74 55 30.11 30.00 29.92 10 7 2 12 4 15 0.14 Rain , Snow
25 51 43 34 38 34 30 92 69 46 30.27 30.08 29.92 10 6 1 16 7 20 0.00  
26 45 39 33 43 33 26 92 78 64 30.27 29.83 29.40 10 5 1 24 13 31 1.42 Rain , Snow
27 43 40 37 36 29 23 92 71 49 30.03 29.70 29.42 10 9 3 33 14 45 0.02 Rain
28 45 41 36 29 25 24 70 60 49 30.17 30.10 30.03 10 10 10 15 6 18 0.00  
29 44 39 34 35 32 26 96 76 55 30.04 29.77 29.59 10 6 1 28 6 39 0.18 Rain , Snow
30 42 37 32 25 20 16 59 47 34 30.36 30.15 29.85 10 10 10 36 15 49 0.00  
31 41 35 29 28 22 18 69 57 44 30.34 30.19 30.02 10 10 10 14 6 16 0.00