Weather History for Dulles Airport, VA

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Month of October, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 81 °F 67 °F 43 °F
Mean Temperature 73 °F 57 °F 42 °F
Min Temperature 64 °F 47 °F 30 °F
Degree Days  
Heating Degree Days (base 65) 23 8 0 262
Cooling Degree Days (base 65) 8 1 0 16
Growing Degree Days (base 50) 22 8 0 241
Dew Point  
Dew Point 69 °F 48 °F 29 °F
Precipitation  
Precipitation 4.25 in 0.33 in 0.00 in 8.87 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 39 mph 6 mph 0 mph
Gust Wind 54 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.55 in 29.96 in 28.69 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Oct. 06, 2012 Rise Set
Actual Time 7:10 AM EDT 6:43 PM EDT
Civil Twilight 6:44 AM EDT 7:10 PM EDT
Nautical Twilight 6:13 AM EDT 7:41 PM EDT
Astronomical Twilight 5:42 AM EDT 8:12 PM EDT
Moon 11:00 PM EDT (10/6) 1:01 PM EDT (10/6)
Length of Visible Light 12h 26m
Length of Day
11h 33m
Waning Gibbous, 65% of the Moon is Illuminated
Oct 6
Waning Gibbous
Oct 8
Last Quarter
Oct 15
New
Oct 21
First Quarter
Oct 29
Full

Weather History Calendar

Precipitation Actual month total 8.87 Normal Month Total: 3.25
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
70 | 45 0.01
Average:
73 | 50 0.11
Rain
Actual:
67 | 60 2.35
Average:
73 | 49 0.10
Rain
Actual:
81 | 64 T
Average:
73 | 49 0.10
Rain
Actual:
80 | 58 0.01
Average:
72 | 48 0.11
Fog
Actual:
81 | 52 0.00
Average:
72 | 48 0.10
Partly Cloudy
Actual:
77 | 51 0.00
Average:
71 | 47 0.11
Rain
Actual:
52 | 42 0.08
Average:
71 | 47 0.11
Rain
Actual:
51 | 37 0.05
Average:
71 | 46 0.10
Rain
Actual:
62 | 45 0.03
Average:
70 | 46 0.11
Rain
Actual:
69 | 48 T
Average:
70 | 46 0.11
Clear
Actual:
61 | 41 0.00
Average:
70 | 45 0.11
Scattered Clouds
Actual:
64 | 36 0.00
Average:
69 | 45 0.10
Scattered Clouds
Actual:
59 | 30 0.00
Average:
69 | 45 0.10
Partly Cloudy
Actual:
74 | 43 0.00
Average:
69 | 44 0.11
Rain
Actual:
70 | 53 0.26
Average:
68 | 44 0.10
Scattered Clouds
Actual:
64 | 39 0.00
Average:
68 | 44 0.10
Partly Cloudy
Actual:
67 | 37 0.00
Average:
68 | 43 0.10
Rain
Actual:
71 | 50 0.40
Average:
68 | 43 0.10
Rain
Actual:
72 | 52 0.03
Average:
67 | 43 0.10
Partly Cloudy
Actual:
67 | 43 0.00
Average:
67 | 42 0.10
Scattered Clouds
Actual:
65 | 39 0.00
Average:
67 | 42 0.11
Clear
Actual:
72 | 36 0.00
Average:
66 | 42 0.10
Partly Cloudy
Actual:
79 | 46 0.00
Average:
66 | 41 0.10
Partly Cloudy
Actual:
81 | 53 0.00
Average:
66 | 41 0.11
Partly Cloudy
Actual:
70 | 57 0.00
Average:
65 | 41 0.10
Overcast
Actual:
69 | 60 0.00
Average:
65 | 41 0.11
Rain
Actual:
69 | 58 T
Average:
65 | 40 0.10
Rain
Actual:
59 | 52 0.40
Average:
64 | 40 0.11
Rain
Actual:
52 | 42 4.25
Average:
64 | 40 0.11
Rain
Actual:
43 | 40 1.00
Average:
64 | 40 0.11
Mostly Cloudy
Actual:
54 | 39 T
Average:
63 | 39 0.11
 

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
Oct high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 70 58 45 57 50 44 100 72 44 29.98 29.94 29.91 10 10 6 12 3 15 0.01 Rain
2 67 64 60 65 62 58 100 95 90 29.97 29.93 29.89 8 2 0 13 4 16 2.35 Fog , Rain
3 81 73 64 69 66 63 100 79 58 30.12 30.04 29.95 10 5 0 8 2 10 T Fog , Rain
4 80 69 58 69 63 54 100 73 45 30.15 30.12 30.10 10 8 4 15 4 18 0.01 Rain
5 81 67 52 58 54 51 100 70 39 30.15 30.08 29.96 10 10 6 13 4 16 0.00 Fog
6 77 64 51 60 51 40 87 66 44 30.05 29.93 29.85 10 10 10 29 11 33 0.00  
7 52 47 42 47 44 39 100 82 63 30.18 30.10 30.05 10 9 4 9 3 12 0.08 Fog , Rain
8 51 44 37 43 40 37 100 82 63 30.31 30.25 30.19 10 10 5 12 6 14 0.05 Fog , Rain
9 62 54 45 52 46 42 86 74 62 30.22 30.15 30.07 10 10 7 10 5 25 0.03 Rain
10 69 59 48 54 48 38 100 71 42 30.10 30.00 29.88 10 9 2 26 7 32 T Fog , Rain
11 61 51 41 38 33 30 76 56 35 30.30 30.22 30.12 10 10 10 11 6 18 0.00  
12 64 50 36 42 37 34 100 70 39 30.45 30.25 30.15 10 10 10 25 7 35 0.00  
13 59 45 30 37 33 29 92 64 36 30.55 30.43 30.29 10 10 10 15 5 20 0.00  
14 74 59 43 56 48 37 86 66 46 30.27 30.12 29.94 10 10 10 22 11 30 0.00  
15 70 62 53 64 57 46 90 79 67 29.90 29.76 29.68 10 8 3 21 10 28 0.26 Rain
16 64 52 39 46 41 38 93 66 39 29.94 29.89 29.83 10 10 10 21 7 29 0.00  
17 67 52 37 51 43 36 100 72 44 30.03 29.96 29.92 10 10 7 12 4 17 0.00  
18 71 61 50 59 53 46 90 72 53 29.96 29.88 29.79 10 9 1 16 7 21 0.40 Rain
19 72 62 52 63 58 46 100 81 61 29.81 29.72 29.61 10 5 0 10 4 23 0.03 Fog , Rain
20 67 55 43 46 41 36 100 69 37 29.94 29.79 29.68 10 10 10 16 4 22 0.00  
21 65 52 39 42 38 37 86 62 37 30.15 30.07 29.96 10 10 10 20 6 24 0.00  
22 72 54 36 47 42 36 92 64 35 30.22 30.15 30.11 10 10 10 10 3 15 0.00  
23 79 63 46 55 50 44 93 66 39 30.14 30.09 30.04 10 10 9 9 3 12 0.00  
24 81 67 53 59 53 49 93 63 33 30.13 30.10 30.06 10 10 8 13 1 17 0.00  
25 70 64 57 60 57 54 97 83 68 30.22 30.18 30.13 10 6 1 9 4 13 0.00  
26 69 65 60 61 58 57 97 82 66 30.20 30.14 30.05 10 7 2 8 4 30 0.00  
27 69 64 58 57 52 46 93 69 44 30.04 29.94 29.86 10 10 10 14 7 18 T Rain
28 59 56 52 54 49 43 96 77 57 29.86 29.73 29.61 10 8 2 21 12 26 0.40 Rain
29 52 47 42 50 46 41 96 91 86 29.59 29.18 28.69 10 3 1 39 24 54 4.25 Rain
30 43 42 40 40 39 37 93 88 82 29.47 29.17 28.71 10 7 2 29 9 41 1.00 Rain
31 54 47 39 39 37 33 92 71 50 29.67 29.57 29.47 10 10 10 13 5 17 T