Weather History for KDCA - September, 2012

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 95 °F 81 °F 70 °F
Mean Temperature 84 °F 72 °F 63 °F
Min Temperature 78 °F 64 °F 53 °F
Degree Days  
Heating Degree Days (base 65) 2 0 0 5
Cooling Degree Days (base 65) 19 8 0 229
Growing Degree Days (base 50) 34 22 12 659
Dew Point  
Dew Point 75 °F 58 °F 35 °F
Precipitation  
Precipitation 1.64 in 0.16 in 0.00 in 4.29 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 41 mph 8 mph 0 mph
Gust Wind 61 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.40 in 30.05 in 29.59 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 28, 2012 Rise Set
Actual Time 7:01 AM EDT 6:54 PM EDT
Civil Twilight 6:35 AM EDT 7:21 PM EDT
Nautical Twilight 6:04 AM EDT 7:52 PM EDT
Astronomical Twilight 5:32 AM EDT 8:23 PM EDT
Moon 5:55 PM EDT (9/28) 5:30 AM EDT (9/28)
Length of Visible Light 12h 46m
Length of Day
11h 53m
Waxing Gibbous, 98% of the Moon is Illuminated
Sep 28
Waxing Gibbous
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New
Oct 21
First 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 95 84 73 73 70 66 76 60 44 30.09 30.04 29.99 10 9 0 31 5 49 1.64 Fog , Rain , Thunderstorm
2 84 79 74 74 72 68 94 80 65 30.05 30.02 29.96 10 9 5 13 2 15 0.05 Rain
3 85 80 75 74 72 70 94 78 61 30.06 30.04 30.00 10 10 10 17 7 20 T  
4 89 83 76 75 72 70 88 72 55 30.03 29.97 29.88 10 10 6 21 10 26 T Rain
5 90 84 78 75 73 71 85 71 56 29.87 29.84 29.80 10 10 6 16 8 21 0.02 Rain
6 84 79 73 74 72 68 94 78 61 29.95 29.89 29.84 10 9 5 14 6 16 0.24 Rain
7 89 81 72 71 69 67 90 73 55 29.96 29.91 29.84 10 10 10 15 7 18 0.00  
8 91 79 66 73 68 59 94 73 52 29.88 29.75 29.59 10 8 0 40 12 58 0.49 Fog , Rain , Thunderstorm
9 80 71 62 58 53 47 78 54 30 29.98 29.89 29.84 10 10 10 16 10 23 0.00  
10 77 69 60 52 48 43 72 52 31 30.18 30.08 29.98 10 10 10 22 11 28 0.00  
11 78 68 57 54 47 41 77 53 28 30.33 30.27 30.19 10 10 10 10 4 15 0.00  
12 81 71 60 58 53 49 78 57 35 30.38 30.34 30.31 10 10 10 13 6 15 0.00  
13 81 71 60 60 57 53 84 62 39 30.40 30.34 30.28 10 10 10 13 4 14 0.00  
14 83 74 64 66 61 57 87 66 45 30.29 30.21 30.12 10 10 10 14 5 20 0.00  
15 78 71 64 64 50 44 84 59 33 30.24 30.17 30.11 10 10 10 24 10 29 0.00  
16 76 68 60 56 51 48 78 58 38 30.19 30.14 30.09 10 10 10 10 4 15 0.00  
17 75 67 59 66 60 54 84 74 64 30.13 30.06 29.98 10 10 10 14 7 17 0.14 Rain
18 80 73 66 72 68 61 97 83 69 29.97 29.76 29.61 10 8 0 41 16 61 0.93 Fog , Rain
19 72 66 59 55 47 42 67 51 35 30.18 30.07 29.86 10 10 10 17 9 22 0.00  
20 75 65 54 55 51 48 80 62 44 30.20 30.14 30.07 10 10 10 14 5 16 0.00  
21 80 70 59 61 58 53 84 69 54 30.09 30.04 29.97 10 10 10 15 7 16 0.00  
22 85 76 66 63 61 52 87 67 47 29.96 29.87 29.79 10 10 10 21 12 28 0.00  
23 71 63 55 46 42 37 61 47 33 30.17 30.11 29.93 10 10 10 23 9 30 0.00  
24 70 63 56 46 42 35 67 48 28 30.25 30.19 30.16 10 10 10 16 7 22 0.00  
25 76 65 53 54 49 45 77 57 36 30.22 30.17 30.09 10 10 10 20 10 25 0.00  
26 84 75 65 64 60 55 78 62 46 30.16 30.11 30.07 10 10 5 18 10 24 0.05 Rain , Thunderstorm
27 85 76 67 67 63 59 93 69 44 30.18 30.12 30.09 10 9 4 18 6 21 0.49 Rain , Thunderstorm
28 81 73 65 67 60 50 93 71 49 30.12 30.03 29.98 10 9 4 16 7 20 0.24 Rain
29 73 66 58 50 48 43 69 53 37 30.04 29.98 29.93 10 10 10 16 9 20 0.00  
30 74 64 54 51 47 43 77 56 35 29.93 29.89 29.81 10 10 10 28 6 33 T Rain