Dulles Airport, VA on Saturday, December 6, 2008 Saturday January February March April May June July August September October November December 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 Previous Day Next Day Daily Summary   Actual Average Record Temperature Mean Temperature °F 39°F   Max Temperature 34°F 49°F 79°F (1998) Min Temperature 16°F 28°F 9°F (2002) Degree Days Heating Degree Days 40 26   Month to date heating degree days 174 151   Since 1 July heating degree days 1127 1128   Cooling Degree Days 0 0   Month to date cooling degree days 0 0   Year to date cooling degree days 1171 1075   Moisture Dew Point 16°F     Average Humidity 69     Maximum Humidity 85     Minimum Humidity 53     Precipitation Precipitation T in 0.10 in 0.75 in (1983) Month to date precipitation 0.06 0.60   Year to date precipitation 41.44 39.33   Snow Snow T in in T in (0.0) Month to date snowfall T T   Since 1 July snowfall T 0.9   Snow Depth 0.00 in     Wind Wind Speed 5 mph     Max Wind Speed 18 mph     Max Gust Speed 22 mph     Visibility 9 miles     Events Snow     Key: T is trace of precipitation, MM is missing value Source: NWS Daily Summary Time(EST) Temperature Dew Point Humidity Pressure Visibility Wind Direction Wind Speed Gust Speed Precipitation Events Conditions 12:52 AM 25.0°F 14.0°F 63% 30.24 in 10.0 miles NNE 3.5 mph - N/A   Clear 1:52 AM 21.9°F 14.0°F 72% 30.24 in 10.0 miles NE 3.5 mph - N/A   Clear 2:52 AM 19.9°F 14.0°F 78% 30.24 in 10.0 miles Calm Calm - N/A   Clear 3:52 AM 19.0°F 14.0°F 81% 30.22 in 10.0 miles Calm Calm - N/A   Clear 4:52 AM 18.0°F 14.0°F 84% 30.20 in 10.0 miles Calm Calm - N/A   Clear 5:52 AM 18.0°F 14.0°F 84% 30.22 in 10.0 miles Calm Calm - N/A   Clear 6:52 AM 17.1°F 12.9°F 84% 30.20 in 10.0 miles Calm Calm - N/A   Scattered Clouds 7:52 AM 19.0°F 16.0°F 88% 30.21 in 10.0 miles Calm Calm - N/A   Scattered Clouds 8:52 AM 24.1°F 17.1°F 75% 30.19 in 10.0 miles Calm Calm - N/A   Mostly Cloudy 9:52 AM 26.1°F 17.1°F 69% 30.19 in 10.0 miles Calm Calm - N/A   Overcast 10:19 AM 28.4°F 17.6°F 64% 30.17 in 10.0 miles South 3.5 mph - N/A   Overcast 10:52 AM 28.9°F 16.0°F 58% 30.16 in 10.0 miles Calm Calm - N/A   Overcast 10:59 AM 28.4°F 15.8°F 59% 30.14 in 10.0 miles SW 4.6 mph - N/A   Overcast 11:52 AM 30.0°F 16.0°F 56% 30.11 in 10.0 miles SW 5.8 mph - N/A   Overcast 12:29 PM 30.2°F 17.6°F 60% 30.08 in 10.0 miles SW 5.8 mph - N/A   Overcast 12:52 PM 30.9°F 18.0°F 59% 30.07 in 10.0 miles SW 5.8 mph - N/A   Overcast 1:52 PM 32.0°F 19.0°F 59% 30.04 in 10.0 miles SSW 5.8 mph - N/A   Overcast 2:52 PM 33.1°F 21.0°F 61% 30.02 in 10.0 miles South 3.5 mph - N/A   Overcast 3:52 PM 33.1°F 21.9°F 64% 30.01 in 10.0 miles South 5.8 mph - N/A   Overcast 4:52 PM 32.0°F 24.1°F 73% 30.01 in 8.0 miles South 12.7 mph - N/A   Overcast 4:55 PM 32.0°F 24.8°F 75% 30.00 in 3.0 miles South 9.2 mph - N/A   Haze 5:06 PM 30.2°F 24.8°F 80% 29.99 in 2.5 miles South 12.7 mph 18.4 mph 0.00 in Snow Light Snow 5:52 PM 30.0°F 27.0°F 88% 29.99 in 2.5 miles South 11.5 mph - 0.00 in Snow Light Snow 5:54 PM 30.2°F 26.6°F 86% 29.97 in 3.0 miles South 11.5 mph - 0.00 in   Overcast 6:19 PM 30.2°F 26.6°F 86% 29.96 in 6.0 miles South 10.4 mph - 0.00 in   Overcast 6:52 PM 30.0°F 27.0°F 88% 29.96 in 6.0 miles South 13.8 mph - 0.00 in   Overcast 6:59 PM 30.2°F 26.6°F 86% 29.95 in 8.0 miles South 13.8 mph - N/A   Overcast 7:52 PM 30.0°F 27.0°F 88% 29.94 in 8.0 miles South 10.4 mph - N/A   Overcast 8:52 PM 30.0°F 27.0°F 88% 29.92 in 10.0 miles South 9.2 mph - N/A   Overcast 9:52 PM 30.0°F 27.0°F 88% 29.90 in 10.0 miles SSW 9.2 mph - N/A   Overcast 10:52 PM 30.0°F 26.1°F 85% 29.87 in 10.0 miles SSW 8.1 mph - N/A   Overcast 11:52 PM 28.9°F 26.1°F 89% 29.85 in 10.0 miles South 6.9 mph - N/A   Mostly Cloudy Astronomy Sunrise: 07:14 AM (EST) Moon Rise: 12:38 PM (EST) 12/6 Sunset: 04:47 PM (EST) Moon Set: 12:13 AM (EST) 12/6 Moon Phase Dec. 06 Dec. 12 Dec. 19 Dec. 27 Jan. 04 Copyright © 2009 The Weather Underground, Inc.