Weather History for Dulles Airport, VA

Change the Weather History Date:

Month of October, 2010

  Max Avg Min Sum
Temperature  
Max Temperature 86 °F 69 °F 54 °F
Mean Temperature 71 °F 58 °F 47 °F
Min Temperature 65 °F 47 °F 33 °F
Degree Days  
Heating Degree Days (base 65) 18 7 0 231
Cooling Degree Days (base 65) 6 1 0 20
Growing Degree Days (base 50) 20 9 0 264
Dew Point  
Dew Point 70 °F 46 °F 28 °F
Precipitation  
Precipitation 0.96 in 0.09 in 0.00 in 2.38 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 31 mph 8 mph 0 mph
Gust Wind 39 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.26 in 29.95 in 29.55 in

Monthly Weather History Graph

Monthly 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

Oct. 08, 2010 Rise Set
Actual Time 7:12 AM EDT 6:41 PM EDT
Civil Twilight 6:45 AM EDT 7:08 PM EDT
Nautical Twilight 6:14 AM EDT 7:39 PM EDT
Astronomical Twilight 5:43 AM EDT 8:10 PM EDT
Moon 8:14 AM EDT (10/8) 6:55 PM EDT (10/8)
Length of Visible Light 12h 22m
Length of Day
11h 29m
New Moon, 1% of the Moon is Illuminated
Oct 8
New Moon
Oct 14
First Quarter
Oct 22
Full
Oct 30
Last Quarter
Nov 6
New

Weather History Calendar

Precipitation Actual month total 2.38 Normal Month Total: 3.37
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
73 | 58 0.01
Average:
73 | 49 0.12
Clear
Actual:
70 | 45 0.00
Average:
73 | 48 0.12
Rain
Actual:
67 | 47 0.29
Average:
73 | 48 0.11
Rain
Actual:
56 | 48 0.34
Average:
72 | 47 0.11
Rain
Actual:
61 | 40 T
Average:
72 | 47 0.11
Rain
Actual:
59 | 50 0.03
Average:
71 | 46 0.11
Scattered Clouds
Actual:
74 | 47 0.00
Average:
71 | 46 0.11
Clear
Actual:
77 | 44 0.00
Average:
71 | 45 0.11
Scattered Clouds
Actual:
83 | 48 0.00
Average:
70 | 45 0.11
Clear
Actual:
79 | 49 0.00
Average:
70 | 44 0.11
Partly Cloudy
Actual:
86 | 56 0.00
Average:
70 | 44 0.11
Scattered Clouds
Actual:
83 | 55 0.00
Average:
69 | 43 0.11
Scattered Clouds
Actual:
68 | 48 0.00
Average:
69 | 43 0.11
Rain
Actual:
62 | 48 0.96
Average:
68 | 43 0.11
Partly Cloudy
Actual:
62 | 47 0.00
Average:
68 | 42 0.11
Scattered Clouds
Actual:
66 | 43 0.00
Average:
68 | 42 0.11
Clear
Actual:
77 | 41 0.00
Average:
67 | 42 0.11
Partly Cloudy
Actual:
66 | 44 0.00
Average:
67 | 41 0.11
Rain
Actual:
61 | 48 T
Average:
67 | 41 0.10
Partly Cloudy
Actual:
59 | 47 0.00
Average:
66 | 40 0.10
Fog
Actual:
67 | 41 0.00
Average:
66 | 40 0.10
Scattered Clouds
Actual:
58 | 38 0.00
Average:
65 | 40 0.10
Scattered Clouds
Actual:
71 | 33 0.00
Average:
65 | 39 0.10
Partly Cloudy
Actual:
75 | 51 0.00
Average:
65 | 39 0.10
Rain
Actual:
74 | 54 T
Average:
64 | 39 0.11
Mostly Cloudy
Actual:
75 | 61 T
Average:
64 | 39 0.11
Rain
Actual:
74 | 65 0.75
Average:
64 | 38 0.11
Fog
Actual:
78 | 50 0.00
Average:
63 | 38 0.11
Partly Cloudy
Actual:
54 | 39 0.00
Average:
63 | 38 0.11
Partly Cloudy
Actual:
60 | 33 0.00
Average:
63 | 38 0.11
Partly Cloudy
Actual:
64 | 38 0.00
Average:
62 | 37 0.11
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2010 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Oct high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 73 66 58 63 52 44 93 67 41 29.93 29.74 29.55 10 10 7 28 17 36 0.01 Rain
2 70 58 45 48 45 43 92 66 40 30.04 29.99 29.94 10 10 10 13 3 17 0.00  
3 67 57 47 52 49 45 93 75 56 30.12 30.04 29.99 10 9 5 16 7 21 0.29 Rain
4 56 52 48 50 47 42 96 81 66 30.17 30.13 30.09 10 8 4 17 10 22 0.34 Rain
5 61 51 40 44 42 39 100 79 57 30.14 30.10 30.05 10 10 10 20 8 24 T Rain
6 59 55 50 49 44 42 89 73 57 30.04 29.94 29.83 10 10 8 17 6 22 0.03 Rain
7 74 61 47 49 46 44 93 64 35 29.99 29.86 29.81 10 10 10 22 9 29 0.00  
8 77 61 44 49 44 40 92 60 27 30.09 30.02 29.96 10 10 10 12 5 16 0.00  
9 83 66 48 52 47 41 93 58 23 30.01 29.97 29.92 10 10 10 14 4 23 0.00  
10 79 64 49 57 51 44 93 67 40 30.04 29.93 29.81 10 10 10 12 5 15 0.00  
11 86 71 56 58 55 50 84 58 31 29.86 29.82 29.78 10 10 10 13 3 16 0.00  
12 83 69 55 57 52 42 93 64 34 29.90 29.82 29.76 10 10 10 20 6 25 0.00  
13 68 58 48 47 44 42 86 64 42 30.07 30.01 29.94 10 10 7 10 4 22 0.00  
14 62 55 48 54 50 40 100 82 63 29.99 29.86 29.79 10 7 0 20 7 28 0.96 Fog , Rain
15 62 55 47 40 38 36 76 59 42 29.85 29.76 29.69 10 10 10 24 12 32 0.00  
16 66 55 43 39 38 36 76 55 34 30.04 29.96 29.86 10 10 10 31 12 39 0.00  
17 77 59 41 46 42 37 83 57 31 30.05 29.97 29.86 10 10 10 15 6 28 0.00  
18 66 55 44 47 42 38 89 63 37 30.06 29.97 29.92 10 10 10 8 1 10 0.00  
19 61 55 48 49 47 45 93 80 67 29.97 29.94 29.90 10 9 5 15 5 18 T Rain
20 59 53 47 52 48 46 100 84 67 29.96 29.90 29.82 10 6 2 10 4 13 0.00  
21 67 54 41 52 43 28 96 62 28 29.89 29.76 29.67 10 7 1 29 11 35 0.00 Fog
22 58 48 38 35 32 28 79 56 33 30.22 30.10 29.90 10 10 10 21 8 26 0.00  
23 71 52 33 45 37 32 92 59 26 30.26 30.21 30.16 10 10 10 14 6 18 0.00  
24 75 63 51 50 47 45 72 57 41 30.17 30.09 30.01 10 10 10 12 6 26 0.00  
25 74 64 54 63 58 49 90 79 68 29.99 29.89 29.77 10 10 10 20 12 26 T Rain
26 75 68 61 67 62 59 97 85 73 29.88 29.83 29.76 10 10 10 22 12 30 T  
27 74 70 65 70 68 63 93 83 73 29.91 29.86 29.78 10 8 3 20 8 25 0.75 Rain
28 78 64 50 66 54 32 100 61 21 30.04 29.91 29.84 10 7 1 25 11 36 0.00 Fog
29 54 47 39 35 32 28 62 52 41 30.21 30.13 30.03 10 10 10 29 15 37 0.00  
30 60 47 33 38 33 30 82 59 36 30.22 30.06 29.82 10 10 10 18 9 23 0.00  
31 64 51 38 44 36 29 89 60 31 30.19 29.94 29.81 10 10 10 22 9 28 0.00