Weather History for Gaithersburg, MD

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Month of August, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 89 °F 80 °F 71 °F
Mean Temperature 81 °F 72 °F 62 °F
Min Temperature 75 °F 63 °F 53 °F
Degree Days  
Heating Degree Days (base 65) 3 0 0 5
Cooling Degree Days (base 65) 16 7 0 211
Growing Degree Days (base 50) 31 22 12 671
Dew Point  
Dew Point 77 °F 63 °F 46 °F
Precipitation  
Precipitation 0.32 in 0.05 in 0.00 in 1.56 in
Snowdepth - - - -
Wind  
Wind 20 mph 3 mph 0 mph
Gust Wind 26 mph 18 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.45 in 30.07 in 29.78 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Aug. 18, 2013 Rise Set
Actual Time 6:24 AM EDT 7:59 PM EDT
Civil Twilight 5:56 AM EDT 8:27 PM EDT
Nautical Twilight 5:22 AM EDT 9:01 PM EDT
Astronomical Twilight 4:45 AM EDT 9:37 PM EDT
Moon 6:03 PM EDT (8/18) 3:32 AM EDT (8/18)
Length of Visible Light 14h 31m
Length of Day
13h 34m
Waxing Gibbous, 92% of the Moon is Illuminated
Aug 18
Waxing Gibbous
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter

Weather History Calendar

 
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
82 | 66 0.06
Average:
- | - -
Scattered Clouds
Actual:
84 | 62 0.00
Average:
- | - -
Partly Cloudy
Actual:
73 | 64 0.20
Average:
- | - -
Scattered Clouds
Actual:
78 | 60 0.04
Average:
- | - -
Scattered Clouds
Actual:
78 | 53 0.00
Average:
- | - -
Mostly Cloudy
Actual:
73 | 62 0.32
Average:
- | - -
Thunderstorm
Actual:
82 | 66 0.24
Average:
- | - -
Thunderstorm
Actual:
82 | 69 0.27
Average:
- | - -
Thunderstorm
Actual:
87 | 75 0.03
Average:
- | - -
Scattered Clouds
Actual:
82 | 66 0.00
Average:
- | - -
Partly Cloudy
Actual:
84 | 66 0.00
Average:
- | - -
Partly Cloudy
Actual:
84 | 66 0.00
Average:
- | - -
Partly Cloudy
Actual:
82 | 69 0.18
Average:
- | - -
Scattered Clouds
Actual:
71 | 53 0.02
Average:
- | - -
Clear
Actual:
75 | 53 0.00
Average:
- | - -
Scattered Clouds
Actual:
75 | 53 0.00
Average:
- | - -
Scattered Clouds
Actual:
78 | 53 0.00
Average:
- | - -
Partly Cloudy
Actual:
71 | 60 0.01
Average:
- | - -
Scattered Clouds
Actual:
75 | 59 0.00
Average:
- | - -
Partly Cloudy
Actual:
86 | 60 0.00
Average:
- | - -
Thunderstorm
Actual:
87 | 66 0.00
Average:
- | - -
Scattered Clouds
Actual:
84 | 68 0.00
Average:
- | - -
Scattered Clouds
Actual:
73 | 60 0.07
Average:
- | - -
Clear
Actual:
80 | 59 0.00
Average:
- | - -
Scattered Clouds
Actual:
82 | 55 0.00
Average:
- | - -
Clear
Actual:
86 | 59 0.00
Average:
- | - -
Scattered Clouds
Actual:
87 | 69 0.00
Average:
- | - -
Thunderstorm
Actual:
77 | 69 0.12
Average:
- | - -
Partly Cloudy
Actual:
82 | 69 0.00
Average:
- | - -
Partly Cloudy
Actual:
84 | 69 0.00
Average:
- | - -
Scattered Clouds
Actual:
89 | 69 0.00
Average:
- | - -
 

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
Aug high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 82 74 66 72 68 64 100 87 61 30.06 29.93 29.85 10 8 2 10 5 17 0.06  
2 84 73 62 64 63 61 100 74 48 30.01 29.96 29.90 10 9 2 12 3 16 0.00  
3 73 68 64 66 64 63 100 88 73 30.02 29.99 29.96 10 9 1 10 2 - 0.20  
4 78 69 60 63 58 52 100 71 41 30.07 30.00 29.95 10 8 0 17 5 24 0.04  
5 78 66 53 57 54 52 94 67 41 30.14 30.09 30.06 10 10 9 8 1 - 0.00  
6 73 68 62 66 63 57 94 87 73 30.11 30.08 30.05 10 9 3 10 3 - 0.32  
7 82 74 66 72 68 64 94 84 70 30.11 30.08 30.03 10 9 5 13 6 17 0.24 Thunderstorm
8 82 76 69 73 71 66 94 87 70 30.08 30.05 30.01 10 9 3 10 5 18 0.27 Thunderstorm
9 87 81 75 77 72 70 94 81 58 30.01 29.95 29.90 10 10 10 12 6 20 0.03 Thunderstorm
10 82 74 66 70 65 59 94 75 45 30.12 30.07 29.99 10 10 10 7 3 - 0.00  
11 84 75 66 70 65 63 94 74 51 30.16 30.10 30.05 10 10 10 10 2 - 0.00  
12 84 75 66 72 68 66 100 78 55 30.07 30.02 29.95 10 9 1 9 2 - 0.00  
13 82 76 69 73 69 63 100 83 58 29.93 29.83 29.78 10 8 2 12 6 16 0.18  
14 71 62 53 63 51 46 88 64 43 30.14 30.01 29.87 10 10 10 20 7 26 0.02  
15 75 64 53 55 49 46 94 64 36 30.23 30.18 30.13 10 10 8 6 1 - 0.00  
16 75 64 53 57 54 52 94 70 44 30.24 30.20 30.17 10 10 7 6 2 - 0.00  
17 78 66 53 57 56 52 100 69 44 30.30 30.27 30.24 10 10 6 9 2 - 0.00  
18 71 66 60 63 61 57 100 82 60 30.28 30.24 30.21 10 10 10 6 1 - 0.01  
19 75 67 59 66 62 57 100 82 69 30.22 30.16 30.11 10 9 2 8 1 - 0.00  
20 86 73 60 70 65 61 100 76 45 30.20 30.17 30.13 10 9 1 8 1 - 0.00  
21 87 76 66 72 69 64 100 78 52 30.24 30.18 30.11 10 8 1 13 2 - 0.00 Thunderstorm
22 84 76 68 70 67 66 94 75 58 30.13 30.06 29.97 10 10 9 14 4 21 0.00  
23 73 66 60 70 64 59 100 87 73 30.16 30.06 29.98 10 8 1 7 1 - 0.07  
24 80 70 59 61 57 52 100 68 37 30.38 30.28 30.16 10 9 1 7 1 - 0.00  
25 82 68 55 63 56 52 100 66 39 30.45 30.38 30.30 10 10 10 8 2 - 0.00  
26 86 72 59 63 59 52 88 61 43 30.33 30.19 30.05 10 10 6 10 3 16 0.00  
27 87 78 69 70 67 63 88 71 55 30.04 29.98 29.92 10 9 5 15 5 18 0.00  
28 77 73 69 72 70 68 100 90 83 29.96 29.92 29.87 10 7 0 9 2 - 0.12 Thunderstorm
29 82 76 69 70 68 66 100 83 58 30.07 29.99 29.88 10 7 0 7 2 - 0.00  
30 84 76 69 70 67 66 88 74 55 30.08 30.01 29.93 10 10 5 9 4 18 0.00  
31 89 79 69 72 69 66 89 72 52 29.95 29.89 29.84 10 10 10 9 4 - 0.00