Weather History for Washington, DC

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Month of July, 2010

  Max Avg Min Sum
Temperature  
Max Temperature 102 °F 92 °F 81 °F
Mean Temperature 91 °F 83 °F 73 °F
Min Temperature 81 °F 74 °F 63 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 26 18 8 566
Growing Degree Days (base 50) 41 33 22 1015
Dew Point  
Dew Point 76 °F 64 °F 40 °F
Precipitation  
Precipitation 1.86 in 0.19 in 0.00 in 5.17 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 43 mph 7 mph 0 mph
Gust Wind 53 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.30 in 29.98 in 29.80 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jul. 22, 2010 Rise Set
Actual Time 6:00 AM EDT 8:28 PM EDT
Civil Twilight 5:30 AM EDT 8:58 PM EDT
Nautical Twilight 4:52 AM EDT 9:36 PM EDT
Astronomical Twilight 4:10 AM EDT 10:18 PM EDT
Moon 6:10 PM EDT (7/22) 2:39 AM EDT (7/22)
Length of Visible Light 15h 28m
Length of Day
14h 27m
Waxing Gibbous, 89% of the Moon is Illuminated
Jul 22
Waxing Gibbous
Jul 25
Full
Aug 3
Last Quarter
Aug 9
New
Aug 16
First Quarter

Weather History Calendar

Precipitation Actual month total 5.17 Normal Month Total: 3.66
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
81 | 65 0.00
Average:
87 | 69 0.11
Scattered Clouds
Actual:
83 | 63 0.00
Average:
87 | 69 0.11
Scattered Clouds
Actual:
87 | 63 0.00
Average:
87 | 69 0.11
Scattered Clouds
Actual:
94 | 67 0.00
Average:
88 | 69 0.11
Partly Cloudy
Actual:
99 | 73 0.00
Average:
88 | 69 0.11
Scattered Clouds
Actual:
102 | 77 0.00
Average:
88 | 69 0.12
Partly Cloudy
Actual:
102 | 80 0.00
Average:
88 | 70 0.12
Partly Cloudy
Actual:
95 | 80 0.00
Average:
88 | 70 0.12
Rain
Actual:
93 | 76 0.02
Average:
88 | 70 0.12
Rain
Actual:
83 | 74 1.17
Average:
88 | 70 0.12
Partly Cloudy
Actual:
92 | 73 0.00
Average:
88 | 70 0.12
Thunderstorm
Actual:
87 | 73 0.40
Average:
88 | 70 0.12
Thunderstorm
Actual:
87 | 73 1.86
Average:
88 | 70 0.12
Thunderstorm
Actual:
90 | 73 0.34
Average:
88 | 70 0.12
Scattered Clouds
Actual:
92 | 74 0.00
Average:
88 | 70 0.12
Thunderstorm
Actual:
98 | 76 0.01
Average:
89 | 70 0.12
Thunderstorm
Actual:
93 | 77 0.00
Average:
89 | 70 0.12
Thunderstorm
Actual:
95 | 75 T
Average:
89 | 70 0.12
Rain
Actual:
92 | 77 0.03
Average:
89 | 71 0.12
Rain
Actual:
93 | 75 T
Average:
89 | 71 0.12
Partly Cloudy
Actual:
93 | 75 T
Average:
89 | 71 0.12
Partly Cloudy
Actual:
96 | 79 0.00
Average:
89 | 71 0.12
Partly Cloudy
Actual:
98 | 77 0.00
Average:
89 | 71 0.12
Scattered Clouds
Actual:
101 | 81 0.00
Average:
89 | 71 0.12
Thunderstorm
Actual:
99 | 75 0.64
Average:
89 | 71 0.12
Partly Cloudy
Actual:
89 | 75 0.00
Average:
89 | 71 0.12
Partly Cloudy
Actual:
87 | 72 0.00
Average:
89 | 71 0.12
Partly Cloudy
Actual:
93 | 75 0.00
Average:
88 | 70 0.12
Thunderstorm
Actual:
94 | 76 0.70
Average:
88 | 70 0.12
Partly Cloudy
Actual:
86 | 70 0.00
Average:
88 | 70 0.12
Partly Cloudy
Actual:
86 | 71 T
Average:
88 | 70 0.11
 

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

2010 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jul high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 81 73 65 53 43 40 57 40 23 30.26 30.21 30.17 10 10 10 18 12 26 0.00  
2 83 73 63 50 45 41 52 38 23 30.30 30.25 30.19 10 10 10 15 6 21 0.00  
3 87 75 63 58 51 46 67 46 25 30.25 30.17 30.09 10 10 10 13 7 17 0.00  
4 94 81 67 65 59 55 73 51 28 30.12 30.05 29.98 10 10 9 14 7 17 0.00  
5 99 86 73 71 64 60 73 52 30 30.06 30.02 29.99 10 8 6 14 5 21 0.00  
6 102 90 77 72 65 53 74 48 21 30.06 30.03 29.99 10 7 4 12 4 21 0.00  
7 102 91 80 70 67 61 67 48 29 30.05 30.00 29.96 8 7 5 14 5 22 0.00  
8 95 88 80 72 69 67 74 59 44 30.02 29.99 29.94 10 8 4 16 7 20 0.00  
9 93 85 76 70 68 64 82 61 39 30.00 29.92 29.80 10 10 5 14 6 18 0.02 Rain
10 83 79 74 72 70 64 87 73 58 29.90 29.84 29.80 10 5 1 21 10 26 1.17 Rain
11 92 83 73 66 58 48 74 49 23 29.93 29.89 29.86 10 10 10 14 5 17 0.00  
12 87 80 73 70 68 62 79 68 57 29.91 29.89 29.86 10 8 1 29 6 36 0.40 Rain , Thunderstorm
13 87 80 73 72 70 69 87 72 57 29.91 29.88 29.84 10 9 0 33 6 40 1.86 Fog , Rain , Thunderstorm
14 90 82 73 72 69 65 87 69 50 30.01 29.90 29.83 10 7 1 26 8 30 0.34 Rain , Thunderstorm
15 92 83 74 71 68 66 79 62 44 30.07 30.02 29.98 10 9 6 13 6 21 0.00  
16 98 87 76 73 69 63 79 56 33 30.02 29.94 29.88 10 9 6 25 8 33 0.01 Rain , Thunderstorm
17 93 85 77 70 68 64 76 59 41 30.00 29.95 29.90 10 10 8 15 7 21 0.00 Rain , Thunderstorm
18 95 85 75 74 67 65 74 57 39 29.96 29.92 29.89 10 10 10 18 8 21 T Rain , Thunderstorm
19 92 85 77 73 70 66 74 63 52 29.93 29.88 29.83 10 10 6 20 9 23 0.03 Rain
20 93 84 75 71 68 65 82 63 44 30.02 29.98 29.94 10 10 9 28 8 35 T Rain
21 93 84 75 73 70 65 82 65 47 30.01 29.97 29.93 10 10 10 16 7 22 T  
22 96 88 79 69 64 57 62 45 28 30.05 30.01 29.97 10 10 9 21 8 28 0.00  
23 98 88 77 76 70 63 74 56 38 30.03 29.98 29.91 10 9 6 18 7 25 0.00  
24 101 91 81 76 71 68 69 53 37 29.96 29.92 29.84 10 10 10 18 9 23 0.00  
25 99 87 75 72 70 64 79 59 39 29.95 29.89 29.81 10 8 0 43 9 53 0.64 Fog , Rain , Thunderstorm
26 89 82 75 70 60 54 74 54 34 30.11 30.06 29.96 10 10 10 16 9 22 0.00  
27 87 80 72 65 63 59 73 58 42 30.13 30.09 30.06 10 10 10 17 7 21 0.00  
28 93 84 75 73 69 65 74 58 41 30.07 30.02 29.93 10 10 9 14 8 21 0.00  
29 94 85 76 73 70 64 79 63 46 29.92 29.88 29.82 10 9 2 25 7 33 0.70 Rain , Thunderstorm
30 86 78 70 60 56 52 61 47 32 30.00 29.95 29.91 10 10 10 15 8 20 0.00  
31 86 79 71 61 59 55 68 53 37 29.97 29.93 29.88 10 10 10 15 8 - T