Weather History for KIAD - May, 2013

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Month of May, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 90 °F 74 °F 61 °F
Mean Temperature 79 °F 64 °F 49 °F
Min Temperature 68 °F 52 °F 32 °F
Degree Days  
Heating Degree Days (base 65) 16 5 0 146
Cooling Degree Days (base 65) 14 4 0 109
Growing Degree Days (base 50) 29 13 0 417
Dew Point  
Dew Point 73 °F 51 °F 21 °F
Precipitation  
Precipitation 1.02 in 0.13 in 0.00 in 3.20 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 29 mph 7 mph 0 mph
Gust Wind 39 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.45 in 30.08 in 29.69 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

May. 26, 2013 Rise Set
Actual Time 5:48 AM EDT 8:25 PM EDT
Civil Twilight 5:18 AM EDT 8:56 PM EDT
Nautical Twilight 4:39 AM EDT 9:34 PM EDT
Astronomical Twilight 3:56 AM EDT 10:18 PM EDT
Moon 10:11 PM EDT (5/26) 7:15 AM EDT (5/26)
Length of Visible Light 15h 38m
Length of Day
14h 36m
Waning Gibbous, 97% of the Moon is Illuminated
May 26
Waning Gibbous
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Jun 23
Full

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 70 58 46 47 39 33 72 49 26 30.43 30.36 30.29 10 10 10 14 7 20 0.00  
2 69 54 38 46 43 38 93 66 39 30.45 30.39 30.32 10 10 10 14 4 18 0.00  
3 68 55 42 47 42 36 92 65 37 30.38 30.34 30.29 10 10 10 16 7 23 0.00  
4 68 57 45 44 41 37 86 62 37 30.33 30.26 30.18 10 10 10 17 7 23 0.00  
5 63 54 44 42 39 37 83 63 42 30.26 30.21 30.15 10 10 10 15 6 22 0.00  
6 62 54 45 57 50 41 89 83 77 30.19 30.12 30.05 10 10 6 16 9 23 0.01 Rain
7 65 61 57 61 58 54 100 92 84 30.05 29.99 29.92 10 6 2 18 10 25 1.02 Rain , Thunderstorm
8 68 61 53 56 54 52 100 82 63 30.01 29.97 29.93 10 6 0 18 2 25 0.48 Fog , Rain , Thunderstorm
9 76 64 52 57 54 51 100 73 46 30.01 29.97 29.93 10 5 0 14 3 18 T Fog
10 84 68 51 63 56 50 100 67 34 30.02 29.96 29.86 10 8 2 21 6 26 0.38 Rain , Thunderstorm
11 77 70 63 64 62 57 100 82 64 29.88 29.79 29.72 10 9 2 16 6 20 0.32 Rain
12 64 53 41 54 37 27 77 52 27 30.05 29.88 29.77 10 10 10 26 12 33 0.00  
13 61 49 37 35 28 21 76 50 23 30.18 30.09 30.04 10 10 10 24 9 30 0.00  
14 65 49 32 36 32 29 96 63 30 30.23 30.15 30.04 10 10 10 15 4 22 0.00  
15 85 69 52 62 52 39 77 60 42 30.02 29.86 29.69 10 10 10 21 8 26 T Rain
16 82 73 63 60 56 52 76 59 42 29.94 29.84 29.76 10 10 10 22 8 29 T Rain
17 83 71 58 57 52 46 78 55 31 30.13 30.05 29.94 10 10 10 13 5 18 0.00  
18 68 64 59 59 56 51 97 78 58 30.24 30.20 30.14 10 7 2 12 5 15 0.09 Rain
19 74 67 59 65 61 57 100 84 68 30.21 30.16 30.09 10 4 1 9 4 13 0.04 Rain
20 81 74 66 67 65 64 93 76 58 30.12 30.05 29.98 10 8 4 13 5 21 T Rain
21 84 76 67 69 67 66 100 80 59 30.01 29.96 29.88 10 7 1 12 7 16 0.00  
22 87 77 66 70 67 60 97 74 50 29.94 29.89 29.83 10 8 2 18 8 24 T Rain , Thunderstorm
23 81 72 63 66 63 61 93 76 58 29.89 29.84 29.76 10 9 2 28 8 35 0.49 Rain , Thunderstorm
24 63 55 46 61 44 29 93 70 46 30.34 29.97 29.75 10 10 10 29 16 39 T Rain
25 66 55 43 37 33 29 62 46 29 30.21 30.16 30.10 10 10 10 26 15 33 0.00  
26 73 60 46 40 35 31 65 44 22 30.23 30.19 30.13 10 10 10 21 9 29 0.00  
27 69 56 42 51 43 37 89 60 31 30.29 30.24 30.19 10 10 10 9 2 13 0.00  
28 83 69 54 68 60 50 100 76 51 30.20 30.13 30.06 10 9 5 20 4 28 0.22 Fog , Rain , Thunderstorm
29 89 77 65 67 64 61 93 67 40 30.13 30.09 30.07 10 10 8 14 8 21 0.00  
30 90 79 68 73 65 62 81 62 43 30.19 30.15 30.11 10 10 10 17 5 22 0.15 Rain
31 89 77 64 65 63 60 93 67 40 30.15 30.10 30.03 10 10 9 18 9 29 0.00