Fort Belvoir, VA

10:18 PM EDT on September 26, 2016 (GMT -0400)
Davison Army Air Field

Weather History for KDAA - September, 2012

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 92 °F 80 °F 69 °F
Mean Temperature 81 °F 68 °F 58 °F
Min Temperature 73 °F 57 °F 43 °F
Degree Days  
Heating Degree Days (base 65) 8 2 0 47
Cooling Degree Days (base 65) 16 5 0 141
Growing Degree Days (base 50) 31 18 8 547
Dew Point  
Dew Point 77 °F 58 °F 34 °F
Precipitation  
Precipitation 1.11 in 0.09 in 0.00 in 2.66 in
Snowdepth - - - -
Wind  
Wind 40 mph 3 mph 0 mph
Gust Wind 70 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.40 in 30.06 in 29.63 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 12, 2012 Rise Set
Actual Time 6:47 AM EDT 7:20 PM EDT
Civil Twilight 6:21 AM EDT 7:47 PM EDT
Nautical Twilight 5:49 AM EDT 8:19 PM EDT
Astronomical Twilight 5:17 AM EDT 8:51 PM EDT
Moon 3:04 AM EDT (9/12) 5:05 PM EDT (9/12)
Length of Visible Light 13h 26m
Length of Day
12h 33m
Waning Crescent, 14% of the Moon is Illuminated
Sep 12
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Daily Weather History & Observations

2012 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 92 80 68 75 71 68 100 79 47 30.09 30.05 30.00 10 10 7 9 1 - 0.00 Rain , Thunderstorm
2 84 76 69 77 72 69 100 91 63 30.05 30.03 29.98 10 8 2 6 1 - 0.12 Rain
3 83 77 72 77 73 70 100 95 65 30.07 30.04 30.01 10 6 1 10 2 - 0.00 Rain
4 88 79 71 77 73 71 100 85 60 30.04 29.99 29.88 10 10 7 14 3 20 0.00 Rain
5 88 81 73 75 72 71 100 76 58 29.88 29.85 29.80 10 10 9 13 4 - 0.00  
6 84 76 68 77 74 68 100 93 61 29.95 29.90 29.85 10 7 2 14 1 18 0.24 Rain
7 89 76 64 74 68 64 100 88 51 29.97 29.92 29.85 10 7 2 9 1 - 0.00  
8 89 76 64 74 69 61 100 90 51 29.88 29.77 29.63 10 8 2 36 6 52 0.24 Rain
9 79 68 56 60 53 46 97 60 32 29.99 29.90 29.85 10 10 10 14 6 20 0.00  
10 76 65 53 52 49 43 90 58 32 30.19 30.09 29.99 10 10 10 17 7 21 0.00  
11 78 63 49 53 48 41 99 66 27 30.33 30.28 30.20 10 10 10 6 1 - 0.00  
12 80 64 49 56 51 47 99 70 32 30.39 30.35 30.32 10 10 10 9 2 - 0.00  
13 80 66 51 60 54 50 99 72 35 30.40 30.35 30.29 10 10 10 7 1 - 0.00  
14 83 68 53 64 58 53 100 79 45 30.30 30.22 30.13 10 10 9 7 1 - 0.00  
15 77 66 55 61 50 44 99 58 33 30.25 30.18 30.12 10 10 10 13 5 21 0.00  
16 76 62 50 54 52 50 99 73 42 30.19 30.15 30.09 10 10 10 6 1 - 0.00  
17 73 62 50 68 58 50 100 86 65 30.14 30.09 29.99 10 9 5 10 2 - 0.01 Rain
18 79 72 65 72 68 62 100 92 74 29.98 29.75 29.63 10 8 0 21 8 31 1.11 Fog , Rain
19 71 60 50 56 48 41 97 61 36 30.19 30.06 29.87 10 10 6 13 7 17 0.00  
20 75 60 46 57 50 46 100 81 43 30.20 30.15 30.08 10 9 6 7 1 - 0.00  
21 79 64 50 62 58 50 100 79 52 30.11 30.04 29.98 10 10 5 10 3 - 0.00  
22 85 73 61 64 61 52 96 70 44 29.97 29.89 29.81 10 10 10 12 5 18 0.00  
23 69 60 52 49 43 36 85 53 31 30.19 30.12 29.94 10 10 10 15 8 26 0.00  
24 69 58 45 49 43 34 97 67 28 30.25 30.20 30.17 10 10 10 12 2 18 0.00  
25 76 59 43 55 49 43 98 64 36 30.23 30.18 30.09 10 9 0 40 4 70 0.05  
26 84 74 63 64 59 56 83 67 45 30.16 30.13 30.08 10 10 7 8 4 - 0.00  
27 84 72 61 68 63 60 100 81 45 30.19 30.14 30.09 10 8 2 7 2 - 0.12 Rain , Thunderstorm
28 79 69 60 68 64 59 100 94 55 30.14 30.05 29.99 10 4 0 9 2 - 0.76 Fog , Rain , Thunderstorm
29 71 61 51 61 53 45 100 80 40 30.04 30.00 29.94 10 9 5 12 2 - 0.01 Rain
30 74 60 46 54 48 44 100 75 34 29.94 29.90 29.82 10 9 4 9 2 17 0.00