Weather History for Washington, DC

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Month of August, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 98 °F 90 °F 78 °F
Mean Temperature 88 °F 81 °F 74 °F
Min Temperature 79 °F 72 °F 66 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 23 16 9 501
Growing Degree Days (base 50) 38 31 24 965
Dew Point  
Dew Point 76 °F 66 °F 53 °F
Precipitation  
Precipitation 0.59 in 0.11 in 0.00 in 2.78 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 30 mph 7 mph 0 mph
Gust Wind 37 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.23 in 30.00 in 29.74 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Aug. 23, 2012 Rise Set
Actual Time 6:29 AM EDT 7:51 PM EDT
Civil Twilight 6:01 AM EDT 8:18 PM EDT
Nautical Twilight 5:28 AM EDT 8:52 PM EDT
Astronomical Twilight 4:53 AM EDT 9:26 PM EDT
Moon 1:09 PM EDT (8/23) 11:22 PM EDT (8/23)
Length of Visible Light 14h 17m
Length of Day
13h 21m
Waxing Crescent, 40% of the Moon is Illuminated
Aug 23
Waxing Crescent
Aug 24
First Quarter
Aug 31
Full
Sep 8
Last Quarter
Sep 15
New

Weather History Calendar

Precipitation Actual month total 2.78 Normal Month Total: 2.93
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
91 | 73 T
Average:
88 | 71 0.11
Partly Cloudy
Actual:
96 | 75 0.00
Average:
88 | 71 0.10
Partly Cloudy
Actual:
96 | 75 0.00
Average:
88 | 71 0.11
Partly Cloudy
Actual:
96 | 79 0.00
Average:
88 | 71 0.11
Thunderstorm
Actual:
98 | 78 0.03
Average:
88 | 71 0.10
Rain
Actual:
93 | 78 0.02
Average:
88 | 71 0.11
Rain
Actual:
90 | 77 T
Average:
87 | 71 0.10
Mostly Cloudy
Actual:
91 | 77 T
Average:
87 | 71 0.11
Partly Cloudy
Actual:
95 | 76 0.00
Average:
87 | 71 0.10
Rain
Actual:
88 | 72 0.59
Average:
87 | 71 0.09
Rain
Actual:
89 | 71 0.10
Average:
87 | 70 0.09
Rain
Actual:
88 | 72 0.00
Average:
87 | 70 0.09
Partly Cloudy
Actual:
90 | 72 T
Average:
87 | 70 0.09
Rain
Actual:
90 | 72 0.20
Average:
87 | 70 0.09
Partly Cloudy
Actual:
86 | 73 0.00
Average:
87 | 70 0.10
Scattered Clouds
Actual:
91 | 69 0.00
Average:
87 | 70 0.09
Rain
Actual:
94 | 72 0.01
Average:
87 | 70 0.09
Rain
Actual:
86 | 69 0.16
Average:
87 | 70 0.09
Rain
Actual:
78 | 69 0.36
Average:
86 | 70 0.09
Mostly Cloudy
Actual:
82 | 69 T
Average:
86 | 70 0.09
Rain
Actual:
86 | 66 0.59
Average:
86 | 69 0.09
Rain
Actual:
86 | 68 0.35
Average:
86 | 69 0.09
Partly Cloudy
Actual:
89 | 70 0.00
Average:
86 | 69 0.09
Overcast
Actual:
88 | 72 0.00
Average:
86 | 69 0.09
Rain
Actual:
82 | 72 0.06
Average:
86 | 69 0.09
Thunderstorm
Actual:
84 | 71 0.28
Average:
85 | 69 0.09
Partly Cloudy
Actual:
88 | 71 0.00
Average:
85 | 68 0.09
Rain
Actual:
91 | 75 0.03
Average:
85 | 68 0.08
Scattered Clouds
Actual:
87 | 69 0.00
Average:
85 | 68 0.09
Partly Cloudy
Actual:
89 | 69 0.00
Average:
85 | 68 0.09
Scattered Clouds
Actual:
97 | 73 0.00
Average:
84 | 68 0.09
 

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

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Aug high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 91 82 73 72 68 66 84 66 47 29.92 29.87 29.81 10 10 10 13 6 16 T Thunderstorm
2 96 86 75 74 70 66 87 64 41 29.94 29.89 29.86 10 10 9 21 6 23 0.00  
3 96 86 75 75 70 67 82 62 41 30.09 30.00 29.94 10 10 9 15 9 18 0.00  
4 96 88 79 76 71 65 85 61 36 30.16 30.12 30.08 10 10 9 20 11 23 0.00  
5 98 88 78 74 71 66 85 62 38 30.17 30.09 30.03 10 10 9 25 12 32 0.03 Rain , Thunderstorm
6 93 86 78 74 70 63 79 60 41 30.08 30.03 29.98 10 10 5 13 6 18 0.02 Rain
7 90 84 77 73 71 67 85 66 47 30.02 29.98 29.95 10 9 7 13 4 17 T Rain
8 91 84 77 74 71 67 88 66 44 29.99 29.97 29.94 10 10 7 14 5 16 T  
9 95 86 76 74 68 61 94 64 33 29.96 29.90 29.83 10 9 5 22 7 24 0.00  
10 88 80 72 73 70 66 93 73 53 29.86 29.80 29.74 10 9 1 24 10 28 0.59 Rain
11 89 80 71 72 69 64 90 68 46 29.92 29.87 29.80 10 10 4 18 8 24 0.10 Rain
12 88 80 72 68 60 56 79 57 34 30.02 29.97 29.92 10 10 10 12 5 16 0.00 Rain
13 90 81 72 68 62 56 73 54 34 30.06 30.00 29.95 10 10 10 14 6 17 T  
14 90 81 72 73 69 63 88 65 41 29.96 29.90 29.82 10 9 4 17 7 22 0.20 Rain
15 86 80 73 68 65 63 84 66 48 29.92 29.89 29.85 10 10 10 14 7 17 0.00  
16 91 80 69 65 59 54 78 55 31 30.00 29.95 29.90 10 10 8 16 7 21 0.00  
17 94 83 72 70 63 57 82 56 30 29.94 29.87 29.78 10 10 7 23 10 30 0.01 Rain
18 86 78 69 70 61 53 90 64 37 29.95 29.90 29.87 10 9 2 17 7 20 0.16 Rain
19 78 74 69 68 64 57 84 71 58 29.98 29.95 29.91 10 9 2 13 4 15 0.36 Rain
20 82 76 69 66 64 60 90 72 54 29.98 29.91 29.86 10 10 8 16 6 21 T  
21 86 76 66 67 62 55 87 62 37 30.11 30.04 29.98 10 8 0 16 3 26 0.59 Rain
22 86 77 68 68 64 57 84 64 44 30.17 30.12 30.09 10 9 5 30 3 37 0.35 Rain
23 89 80 70 68 64 57 90 64 37 30.18 30.15 30.11 10 9 5 10 4 13 0.00  
24 88 80 72 67 64 60 84 62 40 30.18 30.15 30.13 10 10 9 12 3 14 0.00  
25 82 77 72 67 65 61 84 68 51 30.21 30.18 30.16 10 10 6 21 11 29 0.06 Rain
26 84 78 71 72 69 67 93 79 65 30.23 30.19 30.17 10 9 1 21 8 25 0.28 Rain , Thunderstorm
27 88 80 71 73 69 65 90 68 46 30.17 30.09 29.98 10 10 10 16 6 17 0.00  
28 91 83 75 74 66 56 88 60 32 29.97 29.94 29.90 10 10 6 17 8 23 0.03 Rain
29 87 78 69 64 59 55 73 54 35 30.04 29.99 29.93 10 10 10 12 5 15 0.00  
30 89 79 69 70 63 58 84 59 34 30.13 30.09 30.04 10 10 9 12 4 15 0.00  
31 97 85 73 72 66 54 87 56 25 30.13 30.07 30.00 10 9 5 18 7 24 0.00