Weather History for Dulles Airport, VA

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Month of February, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 69 °F 51 °F 31 °F
Mean Temperature 60 °F 41 °F 26 °F
Min Temperature 50 °F 31 °F 17 °F
Degree Days  
Heating Degree Days (base 65) 39 24 5 691
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 0 0 14
Dew Point  
Dew Point 55 °F 28 °F 7 °F
Precipitation  
Precipitation 1.35 in 0.09 in 0.00 in 2.24 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 40 mph 8 mph 0 mph
Gust Wind 51 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.53 in 30.08 in 29.37 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Feb. 22, 2012 Rise Set
Actual Time 6:52 AM EST 5:54 PM EST
Civil Twilight 6:25 AM EST 6:21 PM EST
Nautical Twilight 5:54 AM EST 6:52 PM EST
Astronomical Twilight 5:23 AM EST 7:23 PM EST
Moon 6:50 AM EST (2/22) 6:58 PM EST (2/22)
Length of Visible Light 11h 55m
Length of Day
11h 01m
New Moon, 1% of the Moon is Illuminated
Feb 22
New Moon
Feb 29
First Quarter
Mar 8
Full
Mar 14
Last Quarter
Mar 22
New

Weather History Calendar

Precipitation Actual month total 2.24 Normal Month Total: 2.74
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
69 | 50 T
Average:
44 | 24 0.10
Rain
Actual:
57 | 41 0.09
Average:
44 | 24 0.10
Scattered Clouds
Actual:
50 | 29 0.00
Average:
44 | 25 0.10
Rain
Actual:
44 | 26 0.09
Average:
44 | 25 0.10
Partly Cloudy
Actual:
43 | 26 0.01
Average:
44 | 25 0.09
Scattered Clouds
Actual:
52 | 22 0.00
Average:
45 | 25 0.10
Scattered Clouds
Actual:
56 | 34 0.00
Average:
45 | 25 0.10
Snow
Actual:
41 | 29 0.10
Average:
45 | 25 0.10
Partly Cloudy
Actual:
46 | 29 0.00
Average:
45 | 25 0.10
Rain
Actual:
45 | 29 0.03
Average:
45 | 25 0.10
Snow
Actual:
42 | 21 0.17
Average:
45 | 25 0.10
Snow
Actual:
31 | 20 T
Average:
46 | 25 0.09
Scattered Clouds
Actual:
49 | 17 0.00
Average:
46 | 26 0.10
Rain
Actual:
53 | 31 T
Average:
46 | 26 0.10
Partly Cloudy
Actual:
53 | 34 0.00
Average:
46 | 26 0.10
Rain
Actual:
45 | 34 0.20
Average:
47 | 26 0.10
Fog
Actual:
53 | 32 0.00
Average:
47 | 26 0.10
Partly Cloudy
Actual:
59 | 26 0.00
Average:
47 | 26 0.10
Overcast
Actual:
43 | 35 0.00
Average:
47 | 27 0.09
Partly Cloudy
Actual:
48 | 26 0.00
Average:
48 | 27 0.10
Partly Cloudy
Actual:
50 | 22 0.00
Average:
48 | 27 0.10
Partly Cloudy
Actual:
62 | 35 0.00
Average:
48 | 27 0.09
Partly Cloudy
Actual:
66 | 43 T
Average:
48 | 27 0.10
Rain
Actual:
58 | 42 0.20
Average:
49 | 28 0.10
Snow
Actual:
45 | 33 T
Average:
49 | 28 0.10
Scattered Clouds
Actual:
48 | 28 0.00
Average:
49 | 28 0.09
Scattered Clouds
Actual:
64 | 27 0.00
Average:
50 | 28 0.10
Partly Cloudy
Actual:
54 | 37 0.00
Average:
50 | 28 0.09
Rain
Actual:
56 | 34 1.35
Average:
50 | 29 0.09
 

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
Feb high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 69 60 50 46 39 31 66 50 34 30.06 30.03 29.98 10 10 10 17 9 22 T  
2 57 49 41 48 40 26 93 69 44 30.35 30.09 29.98 10 8 2 24 7 35 0.09 Rain
3 50 40 29 29 27 25 85 64 42 30.53 30.43 30.36 10 10 10 15 5 21 0.00  
4 44 35 26 34 31 24 100 77 53 30.36 30.22 30.13 10 7 2 14 4 16 0.09 Rain
5 43 35 26 34 30 25 92 75 57 30.25 30.17 30.10 10 8 3 13 5 16 0.01  
6 52 37 22 31 26 21 96 67 38 30.27 30.17 30.07 10 9 5 14 4 17 0.00  
7 56 45 34 30 28 26 82 57 32 30.25 30.15 30.09 10 10 10 22 7 28 0.00  
8 41 35 29 34 30 25 96 78 59 30.27 30.19 30.13 10 6 0 8 3 10 0.10 Rain , Snow
9 46 38 29 30 23 18 96 65 33 30.28 30.21 30.16 10 9 3 18 6 23 0.00  
10 45 37 29 34 26 21 76 60 43 30.19 30.07 29.92 10 10 5 10 4 29 0.03 Rain
11 42 32 21 34 27 9 96 71 46 29.92 29.80 29.66 10 4 0 36 14 49 0.17 Rain , Snow
12 31 26 20 14 9 7 77 58 39 30.15 30.07 29.92 10 10 2 31 19 43 T Snow
13 49 33 17 22 13 9 74 49 23 30.19 30.14 30.09 10 10 10 21 5 31 0.00  
14 53 42 31 33 26 21 72 54 35 30.09 30.02 29.94 10 10 10 21 4 26 T Rain
15 53 44 34 32 30 28 76 57 38 30.30 30.21 30.02 10 10 10 23 7 28 0.00  
16 45 40 34 42 38 30 96 82 67 30.29 30.14 30.02 10 8 3 12 4 15 0.20 Rain
17 53 43 32 41 33 25 100 68 35 30.12 30.06 29.99 10 7 0 24 9 30 0.00 Fog
18 59 43 26 33 27 21 85 60 35 30.13 30.04 29.89 10 10 10 23 8 29 0.00  
19 43 39 35 32 23 19 89 66 43 30.12 30.02 29.91 10 10 9 18 8 23 0.00  
20 48 37 26 23 20 17 82 57 31 30.36 30.21 29.99 10 10 10 18 8 25 0.00  
21 50 36 22 33 26 18 88 65 42 30.35 30.12 29.86 10 10 9 23 9 30 0.00  
22 62 49 35 37 33 26 92 60 27 29.87 29.70 29.48 10 10 10 23 9 31 0.00  
23 66 55 43 43 38 33 92 62 31 29.64 29.58 29.46 10 10 10 17 8 23 T  
24 58 50 42 55 42 25 89 62 35 29.68 29.50 29.37 10 8 2 40 9 51 0.20 Rain
25 45 39 33 26 18 12 59 45 30 30.27 29.94 29.70 10 10 4 35 20 46 T Snow
26 48 38 28 24 18 15 59 45 31 30.49 30.42 30.31 10 10 10 22 7 28 0.00  
27 64 46 27 34 27 21 78 51 24 30.41 30.29 30.14 10 10 10 22 8 30 0.00  
28 54 46 37 29 21 18 65 45 24 30.49 30.40 30.30 10 10 10 22 6 31 0.00  
29 56 45 34 55 43 25 100 75 49 30.30 29.93 29.67 10 6 1 25 7 33 1.35 Rain