Washington, VA

10:04 AM EDT on October 23, 2017 (GMT -0400)
Ronald Reagan Washington National

Weather History for KDCA - September, 2011

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 87 °F 78 °F 65 °F
Mean Temperature 80 °F 71 °F 58 °F
Min Temperature 73 °F 65 °F 49 °F
Degree Days  
Heating Degree Days (base 65) 7 0 0 14
Cooling Degree Days (base 65) 15 7 0 208
Growing Degree Days (base 50) 30 21 7 632
Dew Point  
Dew Point 73 °F 63 °F 41 °F
Precipitation  
Precipitation 2.82 in 0.34 in 0.00 in 8.84 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 29 mph 6 mph 0 mph
Gust Wind 36 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.41 in 30.01 in 29.66 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 07, 2011 Rise Set
Actual Time 6:42 AM EDT 7:29 PM EDT
Civil Twilight 6:15 AM EDT 7:56 PM EDT
Nautical Twilight 5:43 AM EDT 8:28 PM EDT
Astronomical Twilight 5:10 AM EDT 9:01 PM EDT
Moon 4:44 PM EDT (9/7) 1:58 AM EDT (9/7)
Length of Visible Light 13h 41m
Length of Day
12h 47m
Waxing Gibbous, 79% of the Moon is Illuminated
Sep 7
Waxing Gibbous
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter

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 82 74 66 63 61 58 81 65 49 30.19 30.14 30.06 10 10 9 14 6 16 T Rain
2 79 74 68 66 64 61 84 73 62 30.11 30.08 30.04 10 10 3 13 6 15 0.16 Rain , Thunderstorm
3 82 76 70 72 66 61 87 74 60 30.06 30.00 29.93 10 10 9 14 8 16 T Rain , Thunderstorm
4 87 80 73 73 70 68 87 73 59 29.95 29.89 29.81 10 9 7 14 9 20 0.00  
5 84 75 65 73 70 63 90 80 69 29.84 29.78 29.74 10 7 1 24 9 28 1.36 Rain
6 67 66 64 63 61 59 93 87 81 29.99 29.94 29.86 10 8 2 24 14 30 0.90 Rain
7 74 69 64 72 67 62 97 92 87 29.99 29.94 29.91 10 4 0 14 4 16 2.82 Fog , Rain , Thunderstorm
8 79 75 71 73 71 69 100 90 79 29.94 29.89 29.85 10 7 2 18 8 22 1.39 Rain , Thunderstorm
9 83 77 71 72 71 69 93 79 65 29.89 29.86 29.82 10 8 2 14 5 15 0.46 Rain
10 84 76 68 70 67 63 100 78 55 30.01 29.92 29.87 10 9 2 16 6 20 0.00  
11 84 76 67 68 64 60 90 71 51 30.08 30.03 29.99 10 9 6 16 5 21 0.02 Rain
12 83 74 65 67 62 59 93 70 47 30.08 30.03 29.98 10 10 9 14 4 17 0.00  
13 83 74 65 67 64 62 90 71 51 30.02 29.98 29.94 10 10 9 14 6 18 0.00  
14 87 78 68 68 65 62 90 69 48 29.98 29.94 29.89 10 10 7 17 7 21 0.00  
15 78 66 54 65 58 45 79 71 62 30.22 29.99 29.88 10 10 4 29 11 36 0.03 Rain
16 66 58 49 48 43 41 74 59 43 30.37 30.32 30.23 10 10 10 14 7 22 0.00  
17 65 61 56 54 51 48 80 74 67 30.41 30.37 30.33 10 10 10 13 8 17 T  
18 68 62 55 54 51 48 83 69 55 30.40 30.35 30.32 10 10 10 13 7 16 0.00  
19 70 65 60 57 55 53 84 72 59 30.32 30.23 30.14 10 10 10 10 6 13 0.00  
20 71 68 64 65 62 58 93 83 73 30.17 30.13 30.09 10 9 2 12 6 15 0.16 Rain
21 76 70 64 70 66 63 100 87 74 30.21 30.16 30.11 10 7 1 10 4 23 0.02 Rain
22 77 73 68 71 69 68 100 87 74 30.13 30.10 30.08 10 8 0 10 5 16 T Fog
23 72 70 68 72 70 68 100 97 93 30.10 30.00 29.89 10 6 2 18 3 30 0.97 Rain
24 76 71 66 68 66 63 100 87 74 30.09 30.04 29.96 10 10 8 9 3 31 0.00  
25 79 74 69 69 68 66 97 83 69 30.12 30.07 30.02 10 8 2 8 3 10 0.07 Rain
26 80 75 70 70 69 66 93 78 62 30.02 29.99 29.93 10 10 9 10 4 15 0.00  
27 78 74 69 72 70 64 93 86 79 29.94 29.90 29.85 10 9 3 12 4 14 0.01 Rain
28 80 74 68 70 68 64 97 80 62 29.92 29.87 29.80 10 8 0 20 5 30 0.47 Rain , Thunderstorm
29 78 70 62 69 61 49 100 70 40 29.80 29.76 29.70 10 9 7 20 7 24 0.00  
30 76 69 61 58 54 46 84 65 46 29.76 29.71 29.66 10 10 10 23 9 26 0.00