Weather History for Dulles Airport, VA

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Week of September 8, 2013 through September 14, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 94 °F 86 °F 71 °F
Mean Temperature 83 °F 75 °F 59 °F
Min Temperature 71 °F 63 °F 47 °F
Degree Days  
Heating Degree Days (base 65) 6 1 0 6
Cooling Degree Days (base 65) 18 11 0 74
Growing Degree Days (base 50) 32 25 10 174
Dew Point  
Dew Point 72 °F 60 °F 39 °F
Precipitation  
Precipitation 0.04 in 0.01 in 0.00 in 0.04 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 25 mph 7 mph 0 mph
Gust Wind 37 mph 19 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.21 in 30.01 in 29.72 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Sep. 12, 2013 Rise Set
Actual Time 6:48 AM EDT 7:22 PM EDT
Civil Twilight 6:21 AM EDT 7:49 PM EDT
Nautical Twilight 5:50 AM EDT 8:20 PM EDT
Astronomical Twilight 5:17 AM EDT 8:53 PM EDT
Moon 2:10 PM EDT (9/12) No Moon Set
Length of Visible Light 13h 27m
Length of Day
12h 33m
Waxing Crescent, 50% of the Moon is Illuminated
Sep 12
Waxing Crescent
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
8 90 77 63 64 61 58 93 67 40 30.05 29.93 29.88 10 10 10 16 6 21 0.00  
9 80 72 63 67 56 46 84 67 49 30.21 30.15 30.07 10 10 10 13 7 16 0.00  
10 93 82 70 72 69 66 97 72 47 30.18 30.14 30.09 10 9 3 14 7 17 0.00  
11 94 83 71 72 70 67 93 69 44 30.15 30.09 30.01 10 9 4 15 5 37 0.00  
12 93 81 69 70 68 65 90 67 44 29.99 29.87 29.76 10 9 6 20 6 24 0.04 Rain , Thunderstorm
13 80 69 57 66 54 45 84 58 31 29.96 29.81 29.72 10 10 10 25 11 31 T Rain
14 71 59 47 48 42 39 86 60 33 30.17 30.07 29.97 10 10 10 16 7 31 0.00