Dulles Airport, VA

7:03 PM EST on January 23, 2018 (GMT -0500)
Washington Dulles International

Weather History for KIAD - April, 2012

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Month of April, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 88 °F 66 °F 47 °F
Mean Temperature 75 °F 54 °F 43 °F
Min Temperature 61 °F 42 °F 30 °F
Degree Days  
Heating Degree Days (base 65) 22 11 0 340
Cooling Degree Days (base 65) 10 1 0 18
Growing Degree Days (base 50) 24 5 0 144
Dew Point  
Dew Point 61 °F 37 °F 14 °F
Precipitation  
Precipitation 0.96 in 0.07 in 0.00 in 1.82 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 29 mph 8 mph 0 mph
Gust Wind 40 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.33 in 29.95 in 29.36 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Apr. 30, 2012 Rise Set
Actual Time 6:12 AM EDT 8:02 PM EDT
Civil Twilight 5:43 AM EDT 8:30 PM EDT
Nautical Twilight 5:09 AM EDT 9:05 PM EDT
Astronomical Twilight 4:31 AM EDT 9:43 PM EDT
Moon 1:59 PM EDT (4/30) 2:32 AM EDT (4/30)
Length of Visible Light 14h 46m
Length of Day
13h 49m
Waxing Gibbous, 63% of the Moon is Illuminated
Apr 30
Waxing Gibbous
May 5
Full
May 12
Last Quarter
May 20
New
May 28
First Quarter

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Apr high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 63 55 46 53 43 39 93 73 52 29.92 29.80 29.59 10 10 6 21 6 31 0.12 Rain
2 61 51 40 53 35 26 93 60 27 29.94 29.82 29.57 10 10 7 24 12 38 0.05 Rain
3 72 52 32 38 29 21 92 55 17 30.06 29.94 29.80 10 10 10 9 2 13 0.00  
4 77 61 45 51 41 23 89 56 23 29.78 29.70 29.58 10 10 7 21 6 35 0.00  
5 61 49 37 33 28 24 79 54 28 29.91 29.85 29.75 10 10 10 16 5 20 0.00  
6 61 49 37 32 23 16 82 51 19 30.09 30.02 29.92 10 10 10 22 11 28 0.00  
7 65 48 30 24 19 14 72 44 15 30.23 30.15 30.07 10 10 10 22 9 39 0.00  
8 72 53 33 35 27 21 65 41 17 30.12 29.97 29.84 10 10 10 26 10 33 0.00  
9 66 57 47 38 30 20 43 35 26 29.95 29.88 29.79 10 10 10 29 16 40 T Rain
10 66 53 39 38 29 20 85 52 19 29.92 29.80 29.70 10 10 10 25 12 36 0.00  
11 53 44 34 34 27 21 70 54 38 30.06 29.96 29.89 10 10 10 24 11 31 T  
12 61 49 37 33 29 25 76 52 28 30.19 30.13 30.06 10 10 10 21 9 37 0.00  
13 65 50 34 34 30 28 82 54 26 30.29 30.23 30.18 10 10 10 15 4 21 0.00  
14 74 55 35 41 35 32 82 53 23 30.25 30.16 30.06 10 10 10 17 5 21 0.00  
15 83 71 58 55 49 42 64 49 33 30.09 30.04 29.99 10 10 10 18 8 23 0.00  
16 88 75 61 61 57 55 84 59 34 30.05 29.98 29.91 10 10 9 20 10 26 0.00  
17 74 62 50 56 40 27 67 43 19 30.24 30.16 29.99 10 10 10 23 9 28 0.00  
18 58 54 49 49 44 35 93 68 43 30.28 30.22 30.15 10 8 4 10 4 14 0.24 Rain
19 70 58 46 50 48 46 100 72 44 30.15 30.10 30.01 10 6 1 7 2 15 0.00 Rain
20 71 57 42 54 50 42 100 77 53 30.02 29.94 29.83 10 9 3 15 5 18 0.00 Fog
21 81 67 53 58 54 49 100 68 35 29.81 29.75 29.61 10 9 2 26 9 37 0.23 Rain
22 54 49 43 50 46 41 93 88 83 29.80 29.70 29.44 10 8 4 24 14 32 0.96 Rain
23 47 43 38 41 37 32 92 77 62 29.56 29.42 29.36 10 10 10 25 14 32 0.01 Rain
24 63 50 37 38 29 20 86 53 19 29.74 29.60 29.52 10 10 10 22 8 26 0.00  
25 69 50 31 38 32 27 96 59 21 29.87 29.83 29.76 10 10 10 18 4 25 0.00  
26 66 60 54 59 52 39 93 74 55 29.86 29.73 29.61 10 10 10 29 7 37 T  
27 62 52 42 46 31 23 62 43 23 30.21 30.02 29.78 10 10 10 25 13 32 0.00  
28 56 46 36 44 32 25 93 64 35 30.31 30.23 30.17 10 9 2 10 3 13 0.16 Rain
29 70 55 40 44 40 32 100 63 26 30.27 30.20 30.12 10 8 0 14 4 18 0.05 Fog , Rain
30 65 53 41 52 40 29 93 67 41 30.33 30.23 30.11 10 10 10 14 6 18 0.00