Weather History for Allentown, PA

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 91 °F 76 °F 62 °F
Mean Temperature 80 °F 66 °F 54 °F
Min Temperature 68 °F 56 °F 38 °F
Degree Days  
Heating Degree Days (base 65) 11 2 0 66
Cooling Degree Days (base 65) 15 4 0 110
Growing Degree Days (base 50) 29 16 3 487
Dew Point  
Dew Point 72 °F 55 °F 30 °F
Precipitation  
Precipitation 0.82 in 0.20 in 0.00 in 5.63 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 28 mph 5 mph 0 mph
Gust Wind 40 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.27 in 30.01 in 29.55 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 19, 2012 Rise Set
Actual Time 5:40 AM EDT 8:16 PM EDT
Civil Twilight 5:09 AM EDT 8:47 PM EDT
Nautical Twilight 4:30 AM EDT 9:27 PM EDT
Astronomical Twilight 3:46 AM EDT 10:11 PM EDT
Moon 4:42 AM EDT (5/19) 7:18 PM EDT (5/19)
Length of Visible Light 15h 38m
Length of Day
14h 35m
Waning Crescent, 2% of the Moon is Illuminated
May 19
Waning Crescent
May 20
New
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter

Weather History Calendar

Precipitation Actual month total 5.63 Normal Month Total: 4.14
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
76 | 50 0.06
Average:
67 | 43 0.11
Rain
Actual:
62 | 51 0.29
Average:
67 | 44 0.12
Rain
Actual:
65 | 51 0.31
Average:
68 | 44 0.12
Rain
Actual:
82 | 57 0.01
Average:
68 | 44 0.12
Fog
Actual:
76 | 58 0.00
Average:
68 | 45 0.13
Overcast
Actual:
67 | 56 0.00
Average:
69 | 45 0.13
Rain
Actual:
63 | 54 0.06
Average:
69 | 45 0.13
Rain
Actual:
67 | 56 0.63
Average:
69 | 46 0.12
Rain
Actual:
75 | 56 0.08
Average:
70 | 46 0.13
Rain
Actual:
65 | 42 0.03
Average:
70 | 46 0.13
Clear
Actual:
71 | 38 0.00
Average:
70 | 47 0.13
Clear
Actual:
80 | 41 0.00
Average:
70 | 47 0.12
Scattered Clouds
Actual:
82 | 52 T
Average:
71 | 47 0.13
Rain
Actual:
68 | 58 0.57
Average:
71 | 48 0.13
Rain
Actual:
74 | 62 0.73
Average:
71 | 48 0.14
Fog
Actual:
81 | 61 T
Average:
72 | 48 0.14
Scattered Clouds
Actual:
74 | 49 T
Average:
72 | 49 0.14
Clear
Actual:
77 | 43 0.00
Average:
72 | 49 0.13
Clear
Actual:
83 | 46 0.00
Average:
72 | 49 0.14
Scattered Clouds
Actual:
84 | 51 0.00
Average:
73 | 50 0.14
Rain
Actual:
67 | 58 0.16
Average:
73 | 50 0.13
Rain
Actual:
79 | 62 0.29
Average:
73 | 50 0.14
Thunderstorm
Actual:
80 | 65 0.35
Average:
74 | 51 0.15
Thunderstorm
Actual:
80 | 64 0.82
Average:
74 | 51 0.14
Rain
Actual:
82 | 64 0.01
Average:
74 | 51 0.14
Rain
Actual:
86 | 62 0.53
Average:
75 | 52 0.14
Rain
Actual:
85 | 67 0.15
Average:
75 | 52 0.14
Scattered Clouds
Actual:
89 | 64 0.00
Average:
75 | 52 0.14
Thunderstorm
Actual:
91 | 68 0.55
Average:
75 | 53 0.14
Rain
Actual:
82 | 65 0.00
Average:
76 | 53 0.15
Scattered Clouds
Actual:
78 | 58 0.00
Average:
76 | 53 0.15
 

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

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 76 63 50 59 51 38 93 72 51 30.13 30.02 29.98 10 9 4 14 5 20 0.06 Rain
2 62 57 51 55 51 49 96 87 78 30.16 30.12 30.04 10 8 2 12 6 15 0.29 Rain
3 65 58 51 57 53 48 96 87 78 30.19 30.11 30.05 10 5 1 12 3 15 0.31 Rain
4 82 70 57 67 60 55 100 79 58 30.07 29.96 29.84 10 5 2 17 6 24 0.01 Rain
5 76 67 58 63 60 55 100 80 60 30.04 29.94 29.86 10 7 0 15 6 21 0.00 Fog
6 67 62 56 55 54 49 87 75 63 30.11 30.06 30.02 10 10 6 10 5 13 0.00  
7 63 59 54 54 49 45 93 75 56 30.12 30.09 30.06 10 10 6 13 5 21 0.06 Rain
8 67 62 56 61 55 44 97 80 62 30.05 29.90 29.81 10 8 2 15 6 22 0.63 Rain
9 75 66 56 63 57 46 97 71 44 29.81 29.72 29.62 10 6 1 15 5 18 0.08 Rain
10 65 54 42 53 42 34 93 64 34 29.87 29.66 29.55 10 10 10 23 9 33 0.03 Rain
11 71 55 38 39 34 30 86 55 23 30.14 30.01 29.89 10 10 10 21 8 33 0.00  
12 80 61 41 46 42 37 86 56 25 30.27 30.20 30.15 10 10 10 14 5 22 0.00  
13 82 67 52 58 49 46 83 56 28 30.19 30.14 30.08 10 10 10 16 5 21 T  
14 68 63 58 61 59 51 93 89 84 30.15 30.11 30.08 10 6 2 14 4 18 0.57 Rain
15 74 68 62 65 62 60 93 83 73 30.09 29.98 29.91 10 8 2 12 5 16 0.73 Rain
16 81 71 61 64 59 52 100 68 36 29.93 29.89 29.81 10 5 0 16 5 23 T Fog
17 74 62 49 57 40 34 78 51 23 30.15 30.08 29.96 10 10 10 16 5 21 T  
18 77 60 43 44 42 38 89 59 29 30.23 30.18 30.12 10 10 10 13 4 16 0.00  
19 83 65 46 50 46 42 93 60 26 30.19 30.15 30.09 10 10 10 15 4 18 0.00  
20 84 68 51 56 48 34 89 54 19 30.22 30.19 30.17 10 10 10 18 7 25 0.00  
21 67 63 58 63 57 44 100 74 48 30.18 30.09 29.98 10 8 2 14 9 16 0.16 Rain
22 79 71 62 65 62 60 100 77 54 29.96 29.88 29.80 10 8 1 10 4 12 0.29 Rain
23 80 73 65 67 65 63 93 76 58 30.01 29.92 29.86 10 5 0 15 4 20 0.35 Fog , Rain , Thunderstorm
24 80 72 64 68 64 59 93 82 71 30.16 30.10 30.02 10 8 0 24 8 36 0.82 Rain , Thunderstorm
25 82 73 64 69 65 62 93 78 62 30.18 30.15 30.10 10 6 0 10 4 16 0.01 Rain
26 86 74 62 72 67 61 100 81 61 30.15 30.13 30.06 10 6 0 23 3 31 0.53 Fog , Rain
27 85 76 67 72 68 64 100 85 69 30.17 30.11 29.99 10 5 0 10 3 14 0.15 Fog , Rain
28 89 77 64 72 68 63 100 76 52 30.01 29.96 29.91 10 8 3 13 5 16 0.00  
29 91 80 68 72 69 64 93 73 52 29.89 29.81 29.70 10 8 1 28 7 40 0.55 Rain , Thunderstorm
30 82 74 65 66 61 57 100 72 43 29.80 29.75 29.70 10 9 5 13 5 17 0.00 Rain
31 78 68 58 59 52 46 84 59 33 29.94 29.84 29.73 10 10 10 14 5 18 0.00