Weather History for Allentown, PA

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Month of August, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 86 °F 79 °F 71 °F
Mean Temperature 80 °F 71 °F 63 °F
Min Temperature 73 °F 62 °F 51 °F
Degree Days  
Heating Degree Days (base 65) 2 0 0 5
Cooling Degree Days (base 65) 14 6 0 184
Growing Degree Days (base 50) 30 21 13 646
Dew Point  
Dew Point 73 °F 60 °F 43 °F
Precipitation  
Precipitation 2.39 in 0.25 in 0.00 in 7.64 in
Snowdepth - - - -
Wind  
Wind 15 mph 3 mph 0 mph
Gust Wind 23 mph 17 mph 10 mph
Sea Level Pressure  
Sea Level Pressure 30.44 in 30.05 in 29.73 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Aug. 18, 2013 Rise Set
Actual Time 6:15 AM EDT 7:55 PM EDT
Civil Twilight 5:46 AM EDT 8:24 PM EDT
Nautical Twilight 5:11 AM EDT 8:59 PM EDT
Astronomical Twilight 4:33 AM EDT 9:36 PM EDT
Moon 5:59 PM EDT (8/18) 3:21 AM EDT (8/18)
Length of Visible Light 14h 37m
Length of Day
13h 39m
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
 
Rain
Actual:
73 | 68 0.63
Average:
- | - -
Rain
Actual:
82 | 64 0.00
Average:
- | - -
Rain
Actual:
75 | 64 0.09
Average:
- | - -
Fog
Actual:
77 | 59 0.00
Average:
- | - -
Clear
Actual:
77 | 55 0.00
Average:
- | - -
Partly Cloudy
Actual:
78 | 55 0.00
Average:
- | - -
Thunderstorm
Actual:
75 | 64 0.10
Average:
- | - -
Thunderstorm
Actual:
84 | 69 0.19
Average:
- | - -
Thunderstorm
Actual:
86 | 73 0.79
Average:
- | - -
Scattered Clouds
Actual:
82 | 68 0.00
Average:
- | - -
Rain
Actual:
80 | 60 0.07
Average:
- | - -
Rain
Actual:
82 | 69 0.14
Average:
- | - -
Thunderstorm
Actual:
80 | 68 1.18
Average:
- | - -
Scattered Clouds
Actual:
71 | 55 0.00
Average:
- | - -
Scattered Clouds
Actual:
75 | 51 0.00
Average:
- | - -
Scattered Clouds
Actual:
77 | 51 0.00
Average:
- | - -
Scattered Clouds
Actual:
80 | 55 0.00
Average:
- | - -
Rain
Actual:
71 | 62 0.02
Average:
- | - -
Rain
Actual:
75 | 60 0.00
Average:
- | - -
Fog
Actual:
86 | 62 0.00
Average:
- | - -
Clear
Actual:
86 | 60 0.00
Average:
- | - -
Thunderstorm
Actual:
80 | 69 0.70
Average:
- | - -
Clear
Actual:
78 | 60 0.00
Average:
- | - -
Clear
Actual:
78 | 55 0.00
Average:
- | - -
Clear
Actual:
78 | 51 0.00
Average:
- | - -
Rain
Actual:
82 | 62 0.02
Average:
- | - -
Rain
Actual:
86 | 69 0.01
Average:
- | - -
Thunderstorm
Actual:
73 | 69 2.39
Average:
- | - -
Thunderstorm
Actual:
82 | 69 1.31
Average:
- | - -
Partly Cloudy
Actual:
82 | 68 0.00
Average:
- | - -
Rain
Actual:
86 | 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 73 70 68 66 64 61 88 82 73 30.04 29.92 29.86 10 8 2 14 5 20 0.63 Rain
2 82 73 64 66 61 55 94 68 39 29.96 29.91 29.85 10 8 0 15 3 18 0.00 Fog , Rain
3 75 70 64 64 62 55 88 77 61 29.96 29.93 29.90 10 10 5 10 2 16 0.09 Rain
4 77 68 59 63 55 50 94 64 39 30.04 29.95 29.91 10 8 0 13 4 21 0.00 Fog
5 77 66 55 55 49 43 88 57 29 30.12 30.07 30.03 10 10 10 9 3 - 0.00  
6 78 66 55 61 56 52 88 67 42 30.13 30.10 30.07 10 10 5 15 3 20 0.00  
7 75 70 64 68 64 59 94 81 69 30.14 30.10 30.06 10 10 5 10 5 17 0.10 Rain , Thunderstorm
8 84 76 69 72 69 64 94 82 62 30.07 30.03 29.99 10 10 4 13 5 18 0.19 Rain , Thunderstorm
9 86 80 73 73 71 70 94 82 58 30.00 29.90 29.85 10 9 1 15 7 22 0.79 Rain , Thunderstorm
10 82 75 68 72 63 57 94 68 42 30.08 30.02 29.92 10 9 4 9 2 - 0.00  
11 80 70 60 68 59 50 94 68 44 30.17 30.10 30.04 10 10 7 8 1 - 0.07 Rain
12 82 76 69 68 62 55 94 69 39 30.06 30.01 29.94 10 8 2 7 2 - 0.14 Rain
13 80 74 68 68 65 63 94 78 58 29.92 29.81 29.73 10 8 1 10 2 - 1.18 Rain , Thunderstorm
14 71 63 55 63 49 45 83 59 41 30.10 29.94 29.82 10 10 7 15 5 23 0.00  
15 75 63 51 52 48 43 94 61 31 30.19 30.15 30.09 10 10 10 8 2 - 0.00  
16 77 64 51 57 50 45 94 61 32 30.23 30.19 30.16 10 10 10 7 1 - 0.00  
17 80 68 55 59 54 50 94 62 34 30.30 30.27 30.23 10 10 7 8 3 - 0.00  
18 71 66 62 63 59 55 88 75 60 30.29 30.24 30.18 10 10 10 5 0 - 0.02 Rain
19 75 68 60 64 60 57 94 77 61 30.18 30.12 30.07 10 9 5 8 4 - 0.00 Rain
20 86 74 62 66 62 57 94 71 40 30.17 30.14 30.10 10 7 0 9 3 16 0.00 Fog
21 86 73 60 68 61 55 94 68 35 30.23 30.16 30.08 10 8 3 8 1 - 0.00  
22 80 74 69 72 69 64 94 83 61 30.10 30.01 29.92 10 8 0 9 2 - 0.70 Rain , Thunderstorm
23 78 69 60 64 58 52 94 67 39 30.15 30.03 29.95 10 9 4 8 2 - 0.00  
24 78 66 55 55 51 45 94 61 32 30.37 30.29 30.16 10 10 10 12 3 16 0.00  
25 78 64 51 59 53 46 94 65 32 30.44 30.36 30.27 10 10 10 9 2 - 0.00  
26 82 72 62 68 59 52 88 64 51 30.27 30.12 29.96 10 10 10 12 4 18 0.02 Rain
27 86 78 69 68 65 61 94 67 43 29.96 29.92 29.89 10 10 7 13 4 22 0.01 Rain
28 73 71 69 70 68 64 94 89 83 29.93 29.90 29.87 10 6 0 9 1 - 2.39 Rain , Thunderstorm
29 82 76 69 68 67 63 94 82 51 30.04 29.99 29.91 10 6 0 15 5 - 1.31 Fog , Rain , Thunderstorm
30 82 75 68 70 67 63 88 79 62 30.05 29.98 29.88 10 8 4 10 4 16 0.00  
31 86 78 69 72 70 68 94 77 58 29.90 29.86 29.81 10 9 5 10 6 - 0.00 Rain