Weather History for Dulles Airport, VA

Change the Weather History Date:

Week of July 7, 2013 through July 13, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 90 °F 85 °F 75 °F
Mean Temperature 82 °F 78 °F 71 °F
Min Temperature 74 °F 70 °F 67 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 17 13 6 90
Growing Degree Days (base 50) 31 27 20 191
Dew Point  
Dew Point 74 °F 69 °F 64 °F
Precipitation  
Precipitation 3.71 in 1.01 in 0.01 in 5.05 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 23 mph 6 mph 0 mph
Gust Wind 32 mph 23 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.27 in 30.03 in 29.71 in

Weekly Weather History Graph

Weekly Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Jul. 10, 2013 Rise Set
Actual Time 5:53 AM EDT 8:36 PM EDT
Civil Twilight 5:21 AM EDT 9:08 PM EDT
Nautical Twilight 4:42 AM EDT 9:47 PM EDT
Astronomical Twilight 3:57 AM EDT 10:31 PM EDT
Moon 8:10 AM EDT (7/10) 9:47 PM EDT (7/10)
Length of Visible Light 15h 46m
Length of Day
14h 43m
Waxing Crescent, 5% of the Moon is Illuminated
Jul 10
Waxing Crescent
Jul 15
First Quarter
Jul 22
Full
Jul 29
Last Quarter
Aug 6
New

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jul high avg low high avg low high avg low high avg low high avg low high avg high sum  
7 90 80 70 72 70 64 97 76 55 30.11 30.07 30.00 10 10 6 23 6 32 0.08 Rain
8 87 79 70 70 67 64 100 74 48 30.12 30.09 30.05 10 10 7 14 5 17 0.11 Rain
9 86 78 70 73 70 68 93 79 65 30.11 30.07 30.01 10 10 10 13 4 17 T Rain
10 89 82 74 74 72 68 94 77 59 30.01 29.95 29.87 10 8 3 18 7 24 T Rain , Thunderstorm
11 87 78 69 72 68 64 93 70 46 29.96 29.91 29.86 10 7 1 17 7 23 3.71 Rain , Thunderstorm
12 75 71 67 68 66 64 97 88 79 30.05 29.99 29.71 10 6 1 15 8 17 1.14 Rain , Thunderstorm
13 84 77 69 73 68 66 97 80 62 30.27 30.15 30.05 10 8 2 10 3 17 0.01 Rain