Dulles Airport, VA

3:52 AM EDT on June 28, 2017 (GMT -0400)
Washington Dulles International

Weather History for KIAD - August, 2014

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Month of August, 2014

  Max Avg Min Sum
Temperature  
Max Temperature 90 °F 82 °F 71 °F
Mean Temperature 81 °F 72 °F 66 °F
Min Temperature 71 °F 62 °F 53 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 16 7 1 219
Growing Degree Days (base 50) 30 22 16 679
Dew Point  
Dew Point 73 °F 62 °F 43 °F
Precipitation  
Precipitation 1.43 in 0.19 in 0.00 in 5.15 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 31 mph 5 mph 0 mph
Gust Wind 47 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.23 in 30.03 in 29.75 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Aug. 12, 2014 Rise Set
Actual Time 6:20 AM EDT 8:08 PM EDT
Civil Twilight 5:51 AM EDT 8:37 PM EDT
Nautical Twilight 5:16 AM EDT 9:11 PM EDT
Astronomical Twilight 4:39 AM EDT 9:48 PM EDT
Moon 9:16 PM EDT (8/12) 8:33 AM EDT (8/12)
Length of Visible Light 14h 45m
Length of Day
13h 47m
Waning Gibbous, 95% of the Moon is Illuminated
Aug 12
Waning Gibbous
Aug 17
Last Quarter
Aug 25
New
Sep 2
First Quarter
Sep 8
Full

Daily Weather History & Observations

2014 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 77 71 64 66 64 59 90 75 60 30.20 30.16 30.12 10 10 10 13 5 20 T Rain
2 79 71 63 68 63 60 90 75 60 30.18 30.12 30.08 10 10 8 9 4 14 0.01 Rain
3 83 75 66 68 66 63 93 74 55 30.09 30.06 30.00 10 9 4 17 3 23 0.15 Rain , Thunderstorm
4 85 74 62 65 62 56 100 69 37 30.12 30.08 30.05 10 9 7 12 5 16 0.00 Fog
5 87 74 61 66 61 56 93 65 37 30.08 30.02 29.94 10 9 5 18 3 22 T  
6 84 74 64 68 63 59 93 71 49 29.97 29.94 29.91 10 9 6 12 5 17 0.00  
7 84 73 62 65 57 50 93 63 33 30.06 30.00 29.94 10 9 5 14 6 20 0.00  
8 81 70 59 61 57 50 90 65 39 30.15 30.10 30.07 10 10 10 10 3 16 0.00  
9 82 72 61 66 63 59 93 74 54 30.13 30.10 30.06 10 10 9 14 4 17 T  
10 84 73 61 65 62 59 100 74 47 30.15 30.11 30.07 10 9 4 13 4 17 0.00 Fog
11 82 70 58 67 62 57 100 74 48 30.12 30.08 30.01 10 8 2 15 5 20 0.12 Fog , Rain
12 77 72 67 71 68 63 100 88 76 30.00 29.89 29.77 10 7 1 15 4 20 1.13 Rain
13 82 73 63 72 61 54 100 74 48 29.92 29.82 29.75 10 10 10 22 11 29 0.00 Rain
14 82 68 53 56 52 47 93 62 30 29.97 29.92 29.86 10 10 10 21 8 29 0.00  
15 79 66 53 55 49 43 83 57 31 30.04 29.99 29.96 10 10 10 14 5 21 0.00  
16 81 69 56 57 52 46 93 63 33 30.04 30.00 29.94 10 10 9 13 4 17 0.00  
17 87 76 65 68 63 58 84 64 43 29.95 29.92 29.88 10 10 10 22 6 28 0.02  
18 82 73 64 66 63 61 93 74 54 29.94 29.88 29.81 10 10 10 12 3 - 0.00  
19 82 75 68 70 66 64 90 76 62 29.92 29.86 29.81 10 10 10 13 6 30 0.00  
20 84 75 65 70 67 63 93 72 51 30.02 29.96 29.91 10 9 1 20 5 28 0.99 Rain , Thunderstorm
21 85 74 62 72 67 62 100 80 59 30.07 30.02 29.99 10 6 0 31 2 47 1.43 Fog , Rain , Thunderstorm
22 81 74 67 71 68 64 100 84 67 30.01 29.99 29.95 10 9 7 12 3 14 0.03 Rain
23 71 69 66 69 66 64 100 95 90 30.10 30.03 29.97 10 8 2 14 5 17 0.83 Rain
24 76 68 60 64 62 58 100 79 57 30.17 30.13 30.10 10 10 10 10 3 13 T  
25 81 70 58 62 58 52 97 67 36 30.20 30.16 30.14 10 10 8 12 4 17 0.00  
26 85 71 57 64 60 55 97 70 43 30.20 30.15 30.09 10 10 10 9 3 13 0.00  
27 87 73 59 69 64 58 100 73 46 30.09 30.02 29.92 10 10 7 9 3 12 0.00 Fog
28 82 71 59 69 61 53 87 63 39 30.10 29.99 29.91 10 10 9 18 8 23 0.00  
29 79 66 53 59 55 52 93 70 46 30.22 30.17 30.11 10 10 10 9 4 12 0.00  
30 80 73 66 72 66 57 93 81 69 30.23 30.18 30.11 10 10 10 13 6 17 0.00  
31 90 81 71 73 71 68 100 77 53 30.13 30.06 29.98 10 8 1 21 7 29 0.44 Rain , Thunderstorm