Weather History for Manassas, VA

Change the Weather History Date:

Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 73 °F 51 °F 37 °F
Mean Temperature 58 °F 42 °F 28 °F
Min Temperature 48 °F 32 °F 17 °F
Degree Days  
Heating Degree Days (base 65) 37 23 6 719
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 8 1 0 26
Dew Point  
Dew Point 61 °F 35 °F 16 °F
Precipitation  
Precipitation 0.01 in 0.00 in 0.00 in 0.04 in
Snowdepth - - - -
Wind  
Wind 30 mph 5 mph 0 mph
Gust Wind 44 mph 21 mph 14 mph
Sea Level Pressure  
Sea Level Pressure 30.48 in 30.04 in 29.30 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. 19, 2012 Rise Set
Actual Time 7:23 AM EST 4:51 PM EST
Civil Twilight 6:53 AM EST 5:21 PM EST
Nautical Twilight 6:20 AM EST 5:54 PM EST
Astronomical Twilight 5:47 AM EST 6:26 PM EST
Moon 11:35 AM EST (12/19) No Moon Set
Length of Visible Light 10h 27m
Length of Day
9h 27m
Waxing Crescent, 45% of the Moon is Illuminated
Dec 19
Waxing Crescent
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Weather History Calendar

Precipitation Actual month total 0.04 Average Month Total: 1.95
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
50 | 24 0.00
Average:
50 | 28 0.07
Fog
Actual:
62 | 28 0.00
Average:
50 | 28 0.08
Fog
Actual:
71 | 39 0.00
Average:
49 | 28 0.08
Partly Cloudy
Actual:
73 | 44 0.00
Average:
48 | 28 0.08
Rain
Actual:
62 | 37 0.00
Average:
48 | 28 0.08
Scattered Clouds
Actual:
44 | 23 0.00
Average:
47 | 28 0.08
Overcast
Actual:
51 | 37 0.00
Average:
47 | 28 0.08
Partly Cloudy
Actual:
64 | 48 0.00
Average:
46 | 27 0.08
Overcast
Actual:
53 | 48 0.01
Average:
46 | 27 0.08
Overcast
Actual:
66 | 48 0.00
Average:
46 | 27 0.07
Partly Cloudy
Actual:
55 | 33 0.00
Average:
45 | 27 0.07
Partly Cloudy
Actual:
44 | 33 0.00
Average:
45 | 26 0.07
Clear
Actual:
48 | 23 0.00
Average:
45 | 26 0.07
Clear
Actual:
53 | 17 0.00
Average:
45 | 25 0.07
Scattered Clouds
Actual:
55 | 26 0.00
Average:
44 | 25 0.06
Overcast
Actual:
48 | 42 0.01
Average:
44 | 24 0.06
Fog
Actual:
53 | 44 0.00
Average:
43 | 24 0.06
Partly Cloudy
Actual:
57 | 33 0.00
Average:
43 | 23 0.06
Scattered Clouds
Actual:
55 | 26 0.00
Average:
42 | 23 0.05
Partly Cloudy
Actual:
51 | 32 0.01
Average:
42 | 22 0.05
Mostly Cloudy
Actual:
55 | 37 0.01
Average:
41 | 22 0.05
Partly Cloudy
Actual:
44 | 24 0.00
Average:
41 | 22 0.05
Clear
Actual:
50 | 19 0.00
Average:
41 | 22 0.05
Snow
Actual:
37 | 21 0.00
Average:
41 | 22 0.05
Fog
Actual:
48 | 33 0.00
Average:
41 | 22 0.05
Snow
Actual:
41 | 32 0.00
Average:
41 | 22 0.05
Mostly Cloudy
Actual:
41 | 35 0.00
Average:
41 | 22 0.05
Scattered Clouds
Actual:
42 | 30 0.00
Average:
41 | 22 0.05
Snow
Actual:
42 | 33 0.00
Average:
41 | 22 0.05
Partly Cloudy
Actual:
42 | 24 0.00
Average:
42 | 22 0.05
Scattered Clouds
Actual:
37 | 19 0.00
Average:
42 | 22 0.05
 

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 50 37 24 39 30 25 100 96 66 30.45 30.39 30.35 10 6 2 7 0 - 0.00  
2 62 45 28 52 38 28 100 91 55 30.41 30.28 30.15 10 4 0 6 1 - 0.00 Fog
3 71 55 39 54 46 39 100 92 53 30.26 30.21 30.16 10 7 1 5 0 - 0.00 Fog
4 73 58 44 55 49 43 100 79 47 30.24 30.15 30.02 10 10 10 10 2 16 0.00  
5 62 50 37 52 37 25 77 56 34 30.32 30.16 30.01 10 10 10 18 9 25 0.00 Rain
6 44 34 23 32 25 21 100 78 42 30.41 30.32 30.25 10 10 10 10 4 16 0.00  
7 51 44 37 46 40 32 93 87 71 30.24 30.12 29.97 10 10 10 8 5 - 0.00  
8 64 56 48 54 50 46 100 92 68 30.02 29.94 29.85 10 8 1 8 3 - 0.00  
9 53 50 48 52 50 46 100 97 88 30.18 30.10 29.98 9 4 0 9 3 - 0.01  
10 66 57 48 61 53 48 100 93 77 29.97 29.76 29.60 10 5 0 16 3 24 0.00  
11 55 44 33 50 37 28 100 76 50 30.24 29.97 29.68 10 10 10 18 11 28 0.00  
12 44 38 33 34 29 27 93 72 49 30.44 30.33 30.08 10 10 10 10 5 - 0.00  
13 48 36 23 28 27 19 100 79 32 30.48 30.42 30.36 10 10 10 9 5 - 0.00  
14 53 35 17 32 23 16 100 88 35 30.36 30.31 30.22 10 10 10 5 0 - 0.00  
15 55 40 26 39 31 25 100 80 38 30.31 30.21 30.12 10 10 10 8 1 - 0.00  
16 48 45 42 46 44 39 100 96 81 30.14 29.99 29.84 10 8 3 13 2 20 0.01  
17 53 48 44 54 48 45 100 98 93 29.86 29.77 29.55 9 3 0 9 2 - 0.00 Fog
18 57 45 33 54 42 30 100 86 55 29.82 29.66 29.55 10 7 2 15 6 21 0.00  
19 55 40 26 39 33 27 100 77 51 30.19 29.97 29.82 10 10 10 16 3 24 0.00  
20 51 42 32 52 38 32 100 93 62 30.21 29.95 29.37 10 9 5 21 4 28 0.01  
21 55 46 37 55 33 21 100 68 45 29.60 29.44 29.30 10 10 3 22 13 32 0.01  
22 44 34 24 25 22 19 86 55 39 30.05 29.82 29.60 10 10 10 29 15 44 0.00  
23 50 34 19 28 23 18 100 73 28 30.08 29.99 29.91 10 10 10 10 2 17 0.00  
24 37 29 21 37 29 21 100 95 87 30.09 29.99 29.90 10 6 1 9 1 - 0.00 Snow
25 48 40 33 41 35 32 100 92 62 30.25 30.06 29.91 10 3 0 14 3 18 0.00 Fog
26 41 36 32 36 32 28 100 86 70 30.24 30.01 29.46 10 7 1 14 7 21 0.00 Rain , Snow
27 41 38 35 36 31 27 100 77 61 30.04 29.75 29.45 10 10 5 28 12 37 0.00  
28 42 36 30 30 29 27 100 78 53 30.16 30.08 30.03 10 10 10 16 7 21 0.00  
29 42 38 33 37 32 28 100 83 61 30.03 29.82 29.59 10 9 2 22 4 34 0.00 Snow
30 42 33 24 28 22 19 86 59 42 30.35 30.17 29.85 10 10 10 30 15 41 0.00  
31 37 28 19 30 25 18 100 86 60 30.34 30.19 30.01 10 10 10 6 0 - 0.00