Weather History for Leesburg, VA

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 95 °F 79 °F 66 °F
Mean Temperature 82 °F 67 °F 56 °F
Min Temperature 69 °F 55 °F 41 °F
Degree Days  
Heating Degree Days (base 65) 8 2 0 72
Cooling Degree Days (base 65) 17 4 0 126
Growing Degree Days (base 50) 32 17 6 502
Dew Point  
Dew Point 77 °F 57 °F 41 °F
Precipitation  
Precipitation 0.60 in 0.03 in 0.00 in 0.91 in
Snowdepth - - - -
Wind  
Wind 25 mph 4 mph 0 mph
Gust Wind 33 mph 18 mph 10 mph
Sea Level Pressure  
Sea Level Pressure 30.45 in 30.06 in 29.71 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 20, 2013 Rise Set
Actual Time 6:56 AM EDT 7:10 PM EDT
Civil Twilight 6:29 AM EDT 7:36 PM EDT
Nautical Twilight 5:58 AM EDT 8:08 PM EDT
Astronomical Twilight 5:26 AM EDT 8:39 PM EDT
Moon 7:43 PM EDT (9/20) 8:07 AM EDT (9/20)
Length of Visible Light 13h 07m
Length of Day
12h 13m
Full, 98% of the Moon is Illuminated
Sep 20
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Weather History Calendar

Precipitation Actual month total 0.91 Average Month Total: 0.49
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Scattered Clouds
Actual:
91 | 66 0.00
Average:
- | - 0.03
Rain
Actual:
91 | 69 0.15
Average:
- | - 0.03
Scattered Clouds
Actual:
86 | 68 0.00
Average:
- | - 0.03
Clear
Actual:
82 | 57 0.00
Average:
- | - 0.03
Scattered Clouds
Actual:
82 | 59 0.00
Average:
- | - 0.03
Clear
Actual:
77 | 53 0.00
Average:
- | - 0.03
Clear
Actual:
82 | 50 0.00
Average:
- | - 0.02
Rain
Actual:
87 | 64 0.00
Average:
- | - 0.02
Partly Cloudy
Actual:
80 | 60 0.00
Average:
- | - 0.02
Scattered Clouds
Actual:
93 | 68 0.00
Average:
- | - 0.02
Scattered Clouds
Actual:
95 | 69 0.00
Average:
- | - 0.02
Thunderstorm
Actual:
95 | 69 0.05
Average:
- | - 0.01
Rain
Actual:
78 | 59 0.00
Average:
- | - 0.01
Scattered Clouds
Actual:
68 | 50 0.00
Average:
- | - 0.01
Scattered Clouds
Actual:
78 | 44 0.00
Average:
- | - 0.01
Rain
Actual:
71 | 57 0.10
Average:
- | - 0.01
Scattered Clouds
Actual:
69 | 46 0.00
Average:
- | - 0.00
Clear
Actual:
73 | 41 0.00
Average:
- | - 0.00
Scattered Clouds
Actual:
78 | 46 0.00
Average:
- | - 0.01
Partly Cloudy
Actual:
82 | 53 0.00
Average:
- | - 0.01
Rain
Actual:
71 | 62 0.60
Average:
- | - 0.01
Scattered Clouds
Actual:
71 | 53 0.01
Average:
- | - 0.01
Partly Cloudy
Actual:
66 | 48 0.00
Average:
- | - 0.01
Clear
Actual:
71 | 42 0.00
Average:
- | - 0.01
Clear
Actual:
77 | 44 0.00
Average:
- | - 0.01
Clear
Actual:
77 | 50 0.00
Average:
- | - 0.01
Partly Cloudy
Actual:
71 | 50 0.00
Average:
- | - 0.02
Partly Cloudy
Actual:
68 | 51 0.00
Average:
- | - 0.02
Scattered Clouds
Actual:
75 | 44 0.00
Average:
- | - 0.02
Scattered Clouds
Actual:
77 | 46 0.00
Average:
- | - 0.02
 

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

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  
1 91 78 66 75 71 66 100 79 52 29.88 29.83 29.78 10 10 7 7 2 - 0.00  
2 91 80 69 75 72 70 100 79 49 29.84 29.80 29.75 10 10 4 14 3 24 0.15 Rain
3 86 77 68 73 64 55 100 67 39 30.00 29.87 29.76 10 10 10 16 7 22 0.00  
4 82 70 57 63 56 52 94 65 35 30.11 30.06 30.00 10 10 10 15 7 - 0.00  
5 82 70 59 63 59 52 100 67 44 30.15 30.08 30.04 10 10 7 17 6 22 0.00  
6 77 66 53 54 50 45 94 63 36 30.29 30.22 30.16 10 10 10 12 4 16 0.00  
7 82 66 50 64 57 50 100 75 45 30.18 30.07 29.96 10 10 10 9 2 - 0.00  
8 87 76 64 68 65 63 100 72 46 30.08 29.95 29.90 10 10 10 13 4 18 0.00 Rain
9 80 70 60 68 59 52 94 68 51 30.23 30.17 30.08 10 10 10 12 6 17 0.00  
10 93 80 68 75 71 68 100 78 49 30.20 30.15 30.11 10 10 7 8 4 - 0.00  
11 95 82 69 77 73 70 100 76 47 30.18 30.10 30.03 10 9 2 14 2 18 0.00  
12 95 82 69 77 72 68 100 85 47 30.03 29.89 29.78 10 8 2 16 3 26 0.05 Rain , Thunderstorm
13 78 68 59 70 58 50 100 68 39 29.98 29.82 29.74 10 10 7 25 8 33 0.00 Rain
14 68 59 50 52 47 45 100 68 43 30.18 30.08 29.98 10 10 10 15 6 20 0.00  
15 78 61 44 61 52 45 100 73 41 30.25 30.17 30.10 10 10 10 12 3 16 0.00  
16 71 64 57 63 59 55 100 86 57 30.26 30.14 30.05 10 10 4 15 5 23 0.10 Rain
17 69 58 46 57 46 41 100 68 37 30.45 30.37 30.26 10 10 10 12 6 21 0.00  
18 73 57 41 54 46 41 100 73 36 30.36 30.29 30.20 10 10 10 9 2 - 0.00  
19 78 62 46 61 54 46 100 78 44 30.22 30.16 30.09 10 10 10 9 2 - 0.00  
20 82 68 53 63 60 54 100 78 51 30.11 30.05 29.97 10 10 7 13 4 20 0.00  
21 71 66 62 68 63 61 100 91 73 29.98 29.84 29.71 10 9 3 18 7 25 0.60 Rain
22 71 63 53 61 54 50 100 76 50 29.98 29.86 29.76 10 10 1 16 4 22 0.01  
23 66 57 48 52 47 45 94 71 49 30.12 30.07 29.98 10 10 10 15 6 20 0.00  
24 71 56 42 52 48 43 100 77 41 30.14 30.06 29.98 10 10 10 8 2 - 0.00  
25 77 60 44 54 48 41 100 72 28 30.02 29.96 29.90 10 10 7 8 2 - 0.00  
26 77 64 50 55 52 48 100 72 39 30.09 30.01 29.95 10 10 10 9 3 18 0.00  
27 71 60 50 61 56 50 100 88 64 30.26 30.18 30.09 10 10 7 7 1 - 0.00  
28 68 60 51 59 55 52 100 87 60 30.33 30.28 30.24 10 10 5 7 2 - 0.00  
29 75 60 44 57 52 45 100 81 43 30.24 30.16 30.08 10 10 3 8 2 - 0.00  
30 77 62 46 59 54 46 100 79 44 30.11 30.06 29.99 10 10 10 7 1 - 0.00