Weather History for Dulles Airport, VA

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Week of December 9, 2012 through December 15, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 63 °F 53 °F 45 °F
Mean Temperature 56 °F 44 °F 37 °F
Min Temperature 48 °F 35 °F 21 °F
Degree Days  
Heating Degree Days (base 65) 28 21 9 148
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 4 1 0 4
Dew Point  
Dew Point 57 °F 34 °F 19 °F
Precipitation  
Precipitation 0.16 in 0.03 in 0.00 in 0.17 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 25 mph 5 mph 0 mph
Gust Wind 32 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.48 in 30.16 in 29.59 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Dec. 12, 2012 Rise Set
Actual Time 7:19 AM EST 4:48 PM EST
Civil Twilight 6:49 AM EST 5:17 PM EST
Nautical Twilight 6:16 AM EST 5:51 PM EST
Astronomical Twilight 5:43 AM EST 6:23 PM EST
Moon 6:21 AM EST (12/12) 4:22 PM EST (12/12)
Length of Visible Light 10h 28m
Length of Day
9h 28m
Waning Crescent, 1% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
9 53 50 47 50 48 46 100 93 86 30.18 30.11 29.97 7 3 0 13 4 17 0.16 Fog , Rain
10 63 56 48 57 54 44 100 89 78 29.95 29.72 29.59 10 6 0 25 9 32 0.00 Fog
11 52 45 38 40 33 27 76 61 46 30.24 29.98 29.71 10 10 10 25 9 32 0.01 Rain
12 45 40 35 27 26 25 70 58 45 30.44 30.37 30.24 10 10 10 13 6 15 0.00  
13 49 38 26 27 24 20 78 56 34 30.48 30.42 30.36 10 10 10 9 4 12 0.00  
14 53 37 21 27 24 19 92 61 29 30.35 30.30 30.23 10 10 9 8 2 10 0.00  
15 53 41 28 36 29 25 92 67 42 30.31 30.22 30.13 10 10 10 10 3 29 T