Weather History for Langley AFB, VA

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 88 °F 80 °F 64 °F
Mean Temperature 82 °F 73 °F 62 °F
Min Temperature 77 °F 66 °F 58 °F
Degree Days  
Heating Degree Days (base 65) 4 0 0 8
Cooling Degree Days (base 65) 16 8 0 252
Growing Degree Days (base 50) 32 23 12 692
Dew Point  
Dew Point 77 °F 65 °F 37 °F
Precipitation  
Precipitation 1.23 in 0.18 in 0.00 in 5.35 in
Snowdepth - - - -
Wind  
Wind 28 mph 6 mph 0 mph
Gust Wind 40 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.34 in 30.01 in 29.58 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 09, 2011 Rise Set
Actual Time 6:42 AM EDT 7:22 PM EDT
Civil Twilight 6:16 AM EDT 7:48 PM EDT
Nautical Twilight 5:45 AM EDT 8:19 PM EDT
Astronomical Twilight 5:13 AM EDT 8:51 PM EDT
Moon 5:45 PM EDT (9/9) 4:03 AM EDT (9/9)
Length of Visible Light 13h 32m
Length of Day
12h 40m
Waxing Gibbous, 93% of the Moon is Illuminated
Sep 9
Waxing Gibbous
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter

Weather History Calendar

Precipitation Actual month total 5.35 Average Month Total: 4.19
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
79 | 59 0.00
Average:
79 | 67 0.20
Partly Cloudy
Actual:
78 | 63 0.00
Average:
82 | 69 0.15
Partly Cloudy
Actual:
82 | 63 0.00
Average:
81 | 67 0.04
Scattered Clouds
Actual:
86 | 68 0.00
Average:
81 | 69 0.17
Rain
Actual:
84 | 71 0.12
Average:
79 | 66 0.28
Thunderstorm
Actual:
88 | 74 0.31
Average:
81 | 66 0.32
Thunderstorm
Actual:
86 | 77 0.05
Average:
79 | 64 0.13
Rain
Actual:
82 | 75 0.00
Average:
79 | 66 0.10
Rain
Actual:
84 | 69 0.01
Average:
78 | 64 0.06
Rain
Actual:
85 | 66 0.00
Average:
80 | 66 0.12
Rain
Actual:
85 | 68 0.00
Average:
78 | 62 0.05
Rain
Actual:
82 | 69 0.00
Average:
80 | 65 0.14
Scattered Clouds
Actual:
86 | 64 0.00
Average:
77 | 63 0.07
Clear
Actual:
88 | 68 0.00
Average:
79 | 65 0.12
Thunderstorm
Actual:
88 | 60 0.87
Average:
78 | 63 0.14
Partly Cloudy
Actual:
65 | 59 0.00
Average:
79 | 65 0.19
Rain
Actual:
64 | 59 0.93
Average:
77 | 64 0.02
Rain
Actual:
66 | 62 0.20
Average:
79 | 65 0.05
Partly Cloudy
Actual:
71 | 62 0.00
Average:
77 | 63 0.15
Rain
Actual:
78 | 61 0.00
Average:
78 | 65 0.12
Rain
Actual:
76 | 68 0.15
Average:
77 | 63 0.33
Thunderstorm
Actual:
84 | 71 1.23
Average:
77 | 63 0.26
Thunderstorm
Actual:
75 | 71 0.65
Average:
74 | 58 0.05
Rain
Actual:
74 | 70 0.04
Average:
74 | 59 0.06
Rain
Actual:
73 | 67 0.01
Average:
73 | 59 0.15
Rain
Actual:
81 | 69 0.00
Average:
77 | 62 0.15
Partly Cloudy
Actual:
83 | 70 0.00
Average:
75 | 59 0.11
Thunderstorm
Actual:
84 | 68 0.06
Average:
74 | 60 0.21
Thunderstorm
Actual:
81 | 64 0.02
Average:
71 | 57 0.05
Thunderstorm
Actual:
81 | 58 0.70
Average:
73 | 60 0.20
 

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

2011 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 79 69 59 63 56 48 95 66 33 30.19 30.15 30.08 10 10 10 10 3 17 0.00  
2 78 70 63 67 61 54 100 72 43 30.10 30.07 30.04 10 10 10 13 3 - 0.00  
3 82 72 63 63 58 51 91 60 39 30.06 30.02 29.97 10 10 10 7 1 - 0.00  
4 86 77 68 68 61 56 84 60 37 29.99 29.93 29.86 10 10 10 10 4 - 0.00  
5 84 78 71 72 68 64 89 71 52 29.90 29.83 29.78 10 9 2 15 8 25 0.12 Rain
6 88 80 74 75 73 70 100 83 59 29.94 29.87 29.81 10 9 1 25 10 32 0.31 Rain , Thunderstorm
7 86 82 77 75 73 69 89 77 58 29.96 29.93 29.87 10 10 2 23 11 28 0.05 Rain , Thunderstorm
8 82 78 75 77 74 70 100 86 72 29.92 29.86 29.81 10 8 5 15 7 - 0.00 Rain
9 84 76 69 77 72 55 100 89 39 29.89 29.85 29.83 10 8 3 10 3 - 0.01 Rain
10 85 76 66 70 65 59 96 73 40 30.00 29.93 29.88 10 10 7 8 1 - 0.00 Rain
11 85 76 68 72 67 61 100 75 46 30.08 30.03 30.00 10 10 6 8 1 - 0.00 Rain
12 82 75 69 66 62 56 83 64 47 30.07 30.03 29.98 10 10 10 10 6 - 0.00 Rain
13 86 75 64 65 61 55 92 62 35 30.03 30.00 29.95 10 10 10 12 4 - 0.00  
14 88 78 68 67 62 51 88 63 28 30.00 29.97 29.92 10 10 9 12 8 - 0.00  
15 88 74 60 68 62 48 94 78 41 30.14 29.98 29.82 10 6 0 28 13 40 0.87 Rain , Thunderstorm
16 65 62 59 48 43 37 59 48 38 30.33 30.28 30.17 10 10 10 24 17 32 0.00  
17 64 62 59 59 57 54 94 88 68 30.34 30.31 30.28 10 7 2 18 15 25 0.93 Rain
18 66 64 62 63 60 55 100 89 76 30.30 30.28 30.25 10 10 5 14 10 21 0.20 Rain
19 71 66 62 61 58 55 87 75 61 30.27 30.22 30.15 10 10 10 12 8 - 0.00  
20 78 69 61 68 63 60 100 77 56 30.18 30.15 30.11 10 10 10 7 2 - 0.00 Rain
21 76 72 68 70 69 67 100 93 74 30.19 30.15 30.10 10 9 2 10 2 - 0.15 Rain
22 84 78 71 75 72 68 100 91 58 30.15 30.11 30.09 10 8 1 12 3 22 1.23 Rain , Thunderstorm
23 75 73 71 75 73 71 100 99 89 30.12 29.99 29.58 10 8 0 15 2 24 0.65 Fog , Rain , Thunderstorm
24 74 72 70 73 71 69 100 96 88 30.08 30.02 29.96 10 8 4 12 4 - 0.04 Rain
25 73 70 67 72 70 68 100 96 88 30.12 30.06 30.01 10 8 1 10 4 - 0.01 Rain
26 81 74 69 72 70 66 100 88 61 30.03 29.99 29.93 10 9 5 13 3 - 0.00 Rain
27 83 76 70 72 70 66 100 85 63 29.96 29.92 29.87 10 9 4 15 4 20 0.00  
28 84 76 68 73 69 64 100 84 58 29.92 29.86 29.80 10 9 2 17 8 21 0.06 Rain , Thunderstorm
29 81 72 64 70 67 56 100 86 43 29.83 29.78 29.72 10 10 5 14 8 - 0.02 Rain , Thunderstorm
30 81 70 58 65 58 54 100 83 44 29.80 29.70 29.61 10 6 1 23 8 36 0.70 Rain , Thunderstorm