Weather History for Washington, DC

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 94 °F 81 °F 69 °F
Mean Temperature 85 °F 72 °F 62 °F
Min Temperature 76 °F 62 °F 51 °F
Degree Days  
Heating Degree Days (base 65) 3 0 0 9
Cooling Degree Days (base 65) 20 7 0 204
Growing Degree Days (base 50) 34 21 12 636
Dew Point  
Dew Point 74 °F 56 °F 35 °F
Precipitation  
Precipitation 0.87 in 0.04 in 0.00 in 1.22 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 25 mph 7 mph 0 mph
Gust Wind 31 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.44 in 30.05 in 29.70 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 14, 2013 Rise Set
Actual Time 6:48 AM EDT 7:17 PM EDT
Civil Twilight 6:22 AM EDT 7:44 PM EDT
Nautical Twilight 5:50 AM EDT 8:15 PM EDT
Astronomical Twilight 5:18 AM EDT 8:47 PM EDT
Moon 3:55 PM EDT (9/14) 1:20 AM EDT (9/14)
Length of Visible Light 13h 22m
Length of Day
12h 28m
Waxing Gibbous, 72% of the Moon is Illuminated
Sep 14
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter

Weather History Calendar

Precipitation Actual month total 1.22 Normal Month Total: 3.72
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Partly Cloudy
Actual:
93 | 72 0.01
Average:
84 | 67 0.10
Thunderstorm
Actual:
92 | 73 0.11
Average:
84 | 67 0.11
Partly Cloudy
Actual:
87 | 70 0.00
Average:
84 | 67 0.12
Scattered Clouds
Actual:
85 | 65 0.00
Average:
84 | 67 0.11
Scattered Clouds
Actual:
88 | 67 0.00
Average:
83 | 66 0.11
Scattered Clouds
Actual:
78 | 61 0.00
Average:
83 | 66 0.10
Partly Cloudy
Actual:
82 | 60 0.00
Average:
83 | 66 0.11
Rain
Actual:
91 | 69 T
Average:
82 | 65 0.12
Mostly Cloudy
Actual:
81 | 65 0.00
Average:
82 | 65 0.12
Partly Cloudy
Actual:
92 | 73 0.00
Average:
82 | 65 0.11
Partly Cloudy
Actual:
94 | 76 0.00
Average:
81 | 64 0.12
Thunderstorm
Actual:
93 | 73 0.18
Average:
81 | 64 0.12
Rain
Actual:
82 | 62 T
Average:
81 | 64 0.13
Scattered Clouds
Actual:
73 | 56 0.00
Average:
80 | 63 0.13
Partly Cloudy
Actual:
78 | 54 0.00
Average:
80 | 63 0.13
Rain
Actual:
77 | 63 0.05
Average:
80 | 63 0.14
Scattered Clouds
Actual:
72 | 54 0.00
Average:
79 | 62 0.14
Partly Cloudy
Actual:
74 | 52 0.00
Average:
79 | 62 0.13
Scattered Clouds
Actual:
78 | 56 0.00
Average:
78 | 61 0.14
Scattered Clouds
Actual:
82 | 61 0.00
Average:
78 | 61 0.13
Rain
Actual:
80 | 64 0.87
Average:
78 | 61 0.13
Rain
Actual:
76 | 58 0.00
Average:
77 | 60 0.13
Partly Cloudy
Actual:
69 | 54 0.00
Average:
77 | 60 0.13
Clear
Actual:
75 | 51 0.00
Average:
76 | 59 0.13
Partly Cloudy
Actual:
78 | 54 0.00
Average:
76 | 59 0.14
Partly Cloudy
Actual:
77 | 59 0.00
Average:
76 | 58 0.13
Partly Cloudy
Actual:
75 | 59 0.00
Average:
75 | 58 0.13
Partly Cloudy
Actual:
73 | 60 0.00
Average:
75 | 58 0.12
Partly Cloudy
Actual:
77 | 54 0.00
Average:
74 | 57 0.13
Partly Cloudy
Actual:
76 | 56 0.00
Average:
74 | 57 0.13
 

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 93 83 72 74 69 65 84 63 41 29.86 29.82 29.77 10 10 10 18 7 23 0.01  
2 92 83 73 73 70 66 87 66 44 29.82 29.78 29.74 10 10 5 15 6 20 0.11 Rain , Thunderstorm
3 87 79 70 72 60 52 79 56 32 29.98 29.84 29.75 10 10 10 23 10 28 0.00  
4 85 75 65 59 53 47 66 47 28 30.10 30.05 29.99 10 10 10 16 8 21 0.00  
5 88 78 67 59 55 47 70 53 35 30.14 30.06 30.02 10 10 9 21 9 25 0.00  
6 78 70 61 53 47 42 60 45 30 30.27 30.20 30.14 10 10 10 18 7 23 0.00  
7 82 71 60 63 57 52 78 62 45 30.16 30.06 29.95 10 10 10 16 7 18 0.00  
8 91 80 69 64 62 58 78 58 38 30.05 29.94 29.89 10 10 10 18 7 23 T Rain
9 81 73 65 68 60 48 79 64 48 30.21 30.16 30.08 10 10 10 16 7 20 0.00  
10 92 83 73 74 70 68 87 70 52 30.19 30.15 30.10 10 10 7 15 9 17 0.00  
11 94 85 76 73 72 68 87 67 46 30.16 30.10 30.02 10 9 6 17 8 24 0.00  
12 93 83 73 71 69 65 87 67 47 30.00 29.86 29.76 10 9 2 18 7 26 0.18 Rain , Thunderstorm
13 82 72 62 68 56 47 90 60 30 29.95 29.80 29.72 10 10 9 25 12 31 T Rain
14 73 65 56 47 44 42 66 51 35 30.17 30.07 29.95 10 10 10 18 10 26 0.00  
15 78 66 54 57 51 47 77 58 38 30.25 30.17 30.11 10 10 10 16 6 18 0.00  
16 77 70 63 61 56 53 81 65 49 30.24 30.13 30.06 10 10 5 20 9 23 0.05 Rain
17 72 63 54 53 43 35 72 50 27 30.44 30.36 30.26 10 10 10 21 9 25 0.00  
18 74 63 52 51 47 41 83 57 31 30.36 30.29 30.21 10 10 10 14 4 16 0.00  
19 78 67 56 57 54 51 86 65 43 30.22 30.16 30.10 10 10 10 14 7 16 0.00  
20 82 72 61 61 57 55 78 62 45 30.11 30.05 29.98 10 10 10 14 8 18 0.00  
21 80 72 64 66 62 57 90 72 54 29.99 29.80 29.70 10 7 2 20 10 25 0.87 Rain
22 76 67 58 61 53 47 90 64 38 29.96 29.84 29.75 10 10 10 18 10 22 0.00 Rain
23 69 62 54 47 43 40 72 56 39 30.11 30.06 29.96 10 10 10 16 9 22 0.00  
24 75 63 51 50 45 43 77 56 35 30.13 30.05 29.96 10 10 10 13 6 21 0.00  
25 78 66 54 54 46 37 83 54 25 30.00 29.95 29.89 10 10 10 9 4 13 0.00  
26 77 68 59 55 52 49 84 60 36 30.09 30.01 29.94 10 10 10 12 4 14 0.00  
27 75 67 59 58 55 53 84 67 49 30.26 30.18 30.09 10 10 10 12 4 15 0.00  
28 73 67 60 54 53 50 78 64 49 30.32 30.27 30.23 10 10 10 13 5 17 0.00  
29 77 66 54 56 53 51 86 65 43 30.22 30.15 30.08 10 10 10 10 4 - 0.00  
30 76 66 56 55 52 51 86 65 43 30.11 30.06 30.00 10 10 10 13 4 15 0.00