Weather History for Langley AFB, VA

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 91 °F 79 °F 67 °F
Mean Temperature 82 °F 70 °F 59 °F
Min Temperature 75 °F 62 °F 50 °F
Degree Days  
Heating Degree Days (base 65) 6 1 0 22
Cooling Degree Days (base 65) 18 6 0 182
Growing Degree Days (base 50) 32 20 9 607
Dew Point  
Dew Point 78 °F 62 °F 48 °F
Precipitation  
Precipitation 0.47 in 0.03 in 0.00 in 0.88 in
Snowdepth - - - -
Wind  
Wind 23 mph 7 mph 0 mph
Gust Wind 37 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.39 in 30.05 in 29.72 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 20, 2013 Rise Set
Actual Time 6:51 AM EDT 7:05 PM EDT
Civil Twilight 6:25 AM EDT 7:31 PM EDT
Nautical Twilight 5:55 AM EDT 8:01 PM EDT
Astronomical Twilight 5:24 AM EDT 8:32 PM EDT
Moon 7:40 PM EDT (9/20) 8:01 AM EDT (9/20)
Length of Visible Light 13h 05m
Length of Day
12h 13m
Full, 98% of the Moon is Illuminated
Sep 20
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Weather History Calendar

Precipitation Actual month total 0.88 Average Month Total: 4.19
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Rain
Actual:
90 | 75 0.00
Average:
79 | 67 0.20
Partly Cloudy
Actual:
88 | 73 0.00
Average:
82 | 69 0.15
Thunderstorm
Actual:
85 | 70 0.01
Average:
81 | 67 0.04
Rain
Actual:
82 | 69 0.00
Average:
81 | 69 0.17
Rain
Actual:
86 | 65 0.00
Average:
79 | 66 0.28
Rain
Actual:
78 | 62 0.00
Average:
81 | 66 0.32
Rain
Actual:
80 | 59 0.00
Average:
79 | 64 0.13
Rain
Actual:
86 | 66 0.00
Average:
79 | 66 0.10
Rain
Actual:
81 | 71 0.00
Average:
78 | 64 0.06
Rain
Actual:
89 | 68 0.00
Average:
80 | 66 0.12
Clear
Actual:
91 | 74 0.00
Average:
78 | 62 0.05
Thunderstorm
Actual:
90 | 73 0.00
Average:
80 | 65 0.14
Rain
Actual:
82 | 69 0.00
Average:
77 | 63 0.07
Rain
Actual:
72 | 56 0.00
Average:
79 | 65 0.12
Rain
Actual:
77 | 54 0.00
Average:
78 | 63 0.14
Rain
Actual:
82 | 63 0.00
Average:
79 | 65 0.19
Rain
Actual:
69 | 58 0.00
Average:
77 | 64 0.02
Rain
Actual:
72 | 51 0.00
Average:
79 | 65 0.05
Rain
Actual:
73 | 52 0.00
Average:
77 | 63 0.15
Partly Cloudy
Actual:
77 | 57 0.00
Average:
78 | 65 0.12
Rain
Actual:
82 | 59 0.47
Average:
77 | 63 0.33
Rain
Actual:
74 | 64 0.40
Average:
77 | 63 0.26
Rain
Actual:
67 | 51 0.00
Average:
74 | 58 0.05
Rain
Actual:
72 | 50 0.00
Average:
74 | 59 0.06
Scattered Clouds
Actual:
74 | 51 0.00
Average:
73 | 59 0.15
Partly Cloudy
Actual:
74 | 60 0.00
Average:
77 | 62 0.15
Rain
Actual:
73 | 62 0.00
Average:
75 | 59 0.11
Rain
Actual:
71 | 61 0.00
Average:
74 | 60 0.21
Rain
Actual:
72 | 59 0.00
Average:
71 | 57 0.05
Clear
Actual:
72 | 52 0.00
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

2013 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 90 82 75 76 74 72 99 82 59 29.91 29.86 29.82 10 10 10 23 9 37 0.00 Rain
2 88 80 73 76 73 72 100 84 63 29.87 29.83 29.79 10 10 10 12 8 - 0.00  
3 85 78 70 78 73 68 100 83 65 29.95 29.85 29.80 10 10 10 10 6 - 0.01 Rain , Thunderstorm
4 82 75 69 71 65 60 100 75 51 30.11 30.06 29.94 10 10 10 12 5 - 0.00 Rain
5 86 76 65 74 68 65 100 86 49 30.10 30.06 30.02 10 9 4 9 3 - 0.00 Fog , Rain
6 78 70 62 66 60 55 85 64 51 30.21 30.16 30.08 10 10 10 16 12 18 0.00 Rain
7 80 68 59 63 58 54 99 66 47 30.16 30.09 30.00 10 10 10 8 3 - 0.00 Rain
8 86 76 66 71 65 58 99 70 50 30.02 29.96 29.91 10 10 10 12 6 - 0.00 Rain
9 81 76 71 73 70 66 100 82 64 30.19 30.14 30.00 10 10 10 13 7 - 0.00 Rain
10 89 78 68 73 70 68 100 76 54 30.25 30.20 30.16 10 10 10 12 6 - 0.00 Rain
11 91 82 74 72 69 67 82 68 49 30.21 30.16 30.09 10 10 5 10 7 - 0.00  
12 90 82 73 73 70 68 100 75 49 30.08 29.89 29.78 10 10 7 15 9 21 0.00 Rain , Thunderstorm
13 82 76 69 74 67 54 100 77 48 29.90 29.78 29.72 10 10 6 13 8 17 0.00 Rain
14 72 66 56 57 53 48 99 66 47 30.18 30.06 29.91 10 10 10 15 9 22 0.00 Rain
15 77 66 54 60 54 50 100 68 39 30.27 30.20 30.15 10 10 6 10 4 - 0.00 Rain
16 82 74 63 70 65 60 99 81 56 30.21 30.12 30.06 10 10 2 18 8 23 0.00 Rain
17 69 64 58 62 54 50 93 67 55 30.39 30.32 30.22 10 10 10 18 11 26 0.00 Rain
18 72 61 51 57 53 51 100 71 51 30.34 30.28 30.21 10 10 10 12 7 - 0.00 Rain
19 73 62 52 58 53 49 100 74 43 30.23 30.19 30.13 10 9 2 10 3 - 0.00 Rain
20 77 67 57 60 58 55 99 73 50 30.13 30.09 30.02 10 10 10 12 3 - 0.00  
21 82 70 59 72 66 57 100 88 54 30.02 29.85 29.76 10 8 1 15 5 22 0.47 Rain
22 74 69 64 68 65 52 100 92 46 29.91 29.78 29.73 10 8 2 14 6 21 0.40 Rain
23 67 59 51 56 50 48 99 66 54 30.11 30.04 29.93 10 10 10 16 11 22 0.00 Rain
24 72 60 50 57 52 48 99 73 46 30.12 30.05 29.97 10 8 2 8 4 23 0.00 Rain
25 74 62 51 63 55 52 100 83 47 29.99 29.94 29.89 10 6 2 8 2 - 0.00  
26 74 66 60 62 60 58 100 82 63 30.07 29.96 29.89 10 9 6 15 5 - 0.00  
27 73 68 62 61 57 53 90 71 50 30.22 30.14 30.05 10 10 10 17 12 22 0.00 Rain
28 71 66 61 59 58 54 88 74 64 30.27 30.22 30.20 10 10 10 18 12 23 0.00 Rain
29 72 66 59 64 61 54 100 85 64 30.18 30.11 30.06 10 10 10 18 8 23 0.00 Rain
30 72 62 52 58 55 50 100 80 47 30.10 30.06 30.03 10 10 10 13 5 18 0.00