Dulles, VA

1:20 AM EST on February 22, 2017 (GMT -0500)
Washington Dulles International

Weather History for KIAD - July, 2012

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Month of July, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 101 °F 91 °F 69 °F
Mean Temperature 89 °F 81 °F 67 °F
Min Temperature 76 °F 70 °F 63 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 24 16 2 490
Growing Degree Days (base 50) 38 30 16 942
Dew Point  
Dew Point 74 °F 67 °F 49 °F
Precipitation  
Precipitation 1.02 in 0.11 in 0.00 in 2.43 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 35 mph 5 mph 0 mph
Gust Wind 45 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.23 in 29.96 in 29.67 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jul. 15, 2012 Rise Set
Actual Time 5:57 AM EDT 8:34 PM EDT
Civil Twilight 5:25 AM EDT 9:05 PM EDT
Nautical Twilight 4:47 AM EDT 9:44 PM EDT
Astronomical Twilight 4:03 AM EDT 10:27 PM EDT
Moon 2:52 AM EDT (7/15) 5:49 PM EDT (7/15)
Length of Visible Light 15h 39m
Length of Day
14h 37m
Waning Crescent, 12% of the Moon is Illuminated
Jul 15
Waning Crescent
Jul 19
New
Jul 26
First Quarter
Aug 1
Full
Aug 9
Last Quarter

Daily Weather History & Observations

2012 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 96 84 71 72 68 61 93 62 30 29.91 29.87 29.80 10 10 9 16 6 22 0.00  
2 92 83 73 66 63 58 79 56 32 29.98 29.94 29.90 10 10 10 20 7 26 T Rain , Thunderstorm
3 95 82 68 69 64 56 93 60 26 29.98 29.94 29.89 10 9 2 30 5 40 0.23 Rain , Thunderstorm
4 96 83 70 72 67 61 100 72 43 29.93 29.88 29.82 10 10 7 31 6 39 0.00 Thunderstorm
5 98 85 71 68 66 63 84 60 35 29.88 29.84 29.81 10 10 10 20 8 25 0.00  
6 98 87 76 72 68 63 74 54 33 29.97 29.91 29.87 10 10 10 12 4 17 0.00  
7 101 88 75 74 69 61 87 57 27 29.93 29.89 29.84 10 9 5 17 5 21 0.00  
8 101 89 76 73 71 66 82 62 42 29.88 29.85 29.80 10 10 8 24 5 30 T Rain , Thunderstorm
9 85 78 71 74 68 62 94 73 51 29.99 29.93 29.86 10 9 3 14 5 17 0.24 Rain , Thunderstorm
10 89 78 67 72 66 61 93 68 43 30.06 30.00 29.97 10 10 9 14 4 17 0.00  
11 89 78 67 68 63 57 93 65 36 30.16 30.11 30.04 10 10 10 13 4 18 0.00  
12 87 75 63 64 60 54 93 63 32 30.20 30.18 30.16 10 10 10 13 4 17 0.00  
13 86 78 69 65 61 58 78 61 43 30.23 30.20 30.17 10 10 10 12 3 14 T  
14 87 78 68 74 68 64 93 75 57 30.21 30.18 30.12 10 10 7 15 4 21 0.10 Rain , Thunderstorm
15 95 84 73 73 71 65 93 67 41 30.14 30.09 30.00 10 10 10 24 5 30 0.06 Rain
16 96 83 69 72 69 67 97 68 39 30.04 29.94 29.85 10 10 10 17 5 23 0.01 Rain
17 99 84 69 70 65 55 93 59 24 29.93 29.88 29.82 10 10 8 13 5 18 0.00  
18 101 87 73 72 69 67 87 61 35 29.92 29.87 29.83 10 10 7 30 4 37 0.06 Rain , Thunderstorm
19 94 84 73 73 69 66 94 68 41 29.96 29.90 29.84 10 8 1 35 6 45 1.02 Rain , Thunderstorm
20 83 75 67 73 70 66 94 80 65 30.00 29.91 29.85 10 9 2 15 7 21 0.57 Rain , Thunderstorm
21 69 67 65 66 65 63 100 92 84 30.14 30.06 29.98 10 5 2 12 6 14 0.13 Rain
22 84 76 67 71 67 66 93 78 63 30.20 30.15 30.12 10 8 2 9 2 12 T  
23 89 79 69 73 70 67 100 75 50 30.13 30.04 29.91 10 10 6 12 4 16 T  
24 90 81 71 72 70 68 93 74 55 29.90 29.79 29.73 10 10 10 17 8 22 T Rain
25 86 78 69 65 56 49 78 55 31 29.97 29.90 29.81 10 10 10 12 5 18 0.00  
26 98 83 68 73 68 61 84 65 45 29.86 29.76 29.67 10 10 10 25 8 33 T  
27 90 81 72 71 69 67 93 70 47 29.88 29.82 29.75 10 10 10 14 5 18 T  
28 92 81 70 71 66 62 93 66 38 29.94 29.90 29.86 10 10 10 18 5 22 0.00  
29 89 79 69 66 64 61 79 63 46 30.03 29.98 29.94 10 10 10 15 6 20 0.00  
30 89 77 65 70 67 64 93 70 46 30.08 30.04 30.00 10 10 3 16 5 22 0.00  
31 90 80 70 72 68 61 97 70 42 30.03 29.96 29.89 10 10 10 21 6 35 0.01 Rain , Thunderstorm