Weather History for Lancaster, PA

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 91 °F 77 °F 60 °F
Mean Temperature 80 °F 67 °F 56 °F
Min Temperature 68 °F 57 °F 41 °F
Degree Days  
Heating Degree Days (base 65) 10 2 0 54
Cooling Degree Days (base 65) 14 3 0 103
Growing Degree Days (base 50) 30 17 6 500
Dew Point  
Dew Point 72 °F 56 °F 35 °F
Precipitation  
Precipitation 0.87 in 0.11 in 0.00 in 3.26 in
Snowdepth - - - -
Wind  
Wind 32 mph 5 mph 0 mph
Gust Wind 41 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.28 in 30.00 in 29.59 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 07, 2012 Rise Set
Actual Time 5:57 AM EDT 8:06 PM EDT
Civil Twilight 5:27 AM EDT 8:36 PM EDT
Nautical Twilight 4:50 AM EDT 9:13 PM EDT
Astronomical Twilight 4:10 AM EDT 9:54 PM EDT
Moon 10:16 PM EDT (5/7) 7:00 AM EDT (5/7)
Length of Visible Light 15h 09m
Length of Day
14h 09m
Waning Gibbous, 97% of the Moon is Illuminated
May 7
Waning Gibbous
May 12
Last Quarter
May 20
New
May 28
First Quarter
Jun 4
Full

Weather History Calendar

Precipitation Actual month total 3.26 Average Month Total: 4.22
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
78 | 53 0.22
Average:
71 | 45 0.11
Rain
Actual:
60 | 53 0.07
Average:
69 | 47 0.11
Thunderstorm
Actual:
73 | 53 0.19
Average:
69 | 46 0.16
Thunderstorm
Actual:
81 | 57 0.20
Average:
69 | 46 0.17
Fog
Actual:
75 | 57 0.01
Average:
68 | 45 0.26
Clear
Actual:
- | - -
Average:
- | - -
Rain
Actual:
61 | 53 0.01
Average:
72 | 46 0.03
Rain
Actual:
66 | 64 0.00
Average:
70 | 46 0.12
Rain
Actual:
66 | 57 0.02
Average:
72 | 47 0.08
Partly Cloudy
Actual:
64 | 48 0.01
Average:
71 | 48 0.19
Clear
Actual:
70 | 41 0.00
Average:
73 | 48 0.08
Clear
Actual:
78 | 45 0.00
Average:
73 | 50 0.12
Rain
Actual:
80 | 52 0.00
Average:
75 | 50 0.15
Rain
Actual:
66 | 59 0.50
Average:
74 | 49 0.08
Rain
Actual:
75 | 62 0.87
Average:
74 | 49 0.19
Partly Cloudy
Actual:
81 | 60 0.00
Average:
72 | 50 0.14
Scattered Clouds
Actual:
72 | 53 0.00
Average:
73 | 50 0.10
Clear
Actual:
75 | 46 0.00
Average:
75 | 50 0.10
Clear
Actual:
82 | 48 0.00
Average:
74 | 52 0.20
Scattered Clouds
Actual:
81 | 55 0.00
Average:
76 | 52 0.17
Rain
Actual:
71 | 62 0.00
Average:
76 | 53 0.18
Mostly Cloudy
Actual:
77 | 62 0.00
Average:
75 | 51 0.12
Rain
Actual:
81 | 60 0.02
Average:
76 | 52 0.21
Fog
Actual:
82 | 62 0.00
Average:
76 | 53 0.17
Rain
Actual:
84 | 64 0.00
Average:
77 | 54 0.03
Thunderstorm
Actual:
89 | 62 0.39
Average:
76 | 54 0.22
Rain
Actual:
87 | 66 0.14
Average:
75 | 53 0.06
Clear
Actual:
89 | 62 0.00
Average:
76 | 53 0.08
Thunderstorm
Actual:
91 | 68 0.61
Average:
78 | 54 0.25
Partly Cloudy
Actual:
82 | 64 0.00
Average:
78 | 55 0.09
Scattered Clouds
Actual:
80 | 59 0.00
Average:
78 | 57 0.06
 

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 78 65 53 61 55 45 94 79 48 30.10 30.00 29.97 10 7 2 14 5 20 0.22 Rain , Thunderstorm
2 60 57 53 58 54 50 94 88 81 30.15 30.08 30.00 6 4 2 12 7 - 0.07 Rain
3 73 63 53 65 55 51 94 87 71 30.18 30.10 30.03 7 4 1 12 5 - 0.19 Rain , Thunderstorm
4 81 69 57 67 60 55 96 83 56 30.04 29.97 29.86 10 4 0 10 5 21 0.20 Fog , Rain , Thunderstorm
5 75 66 57 63 61 57 100 86 58 29.95 29.90 29.87 10 4 0 14 3 - 0.01 Fog
6 - - - - - - - - - - - - - - - - - - -  
7 61 57 53 55 51 49 88 78 64 30.11 30.09 30.05 10 9 7 9 5 - 0.01 Rain
8 66 66 64 59 58 57 84 77 70 29.87 29.83 29.79 10 10 10 15 13 25 0.00 Rain
9 66 64 57 61 58 54 93 86 76 29.75 29.72 29.65 9 6 4 10 5 - 0.02 Rain
10 64 56 48 54 41 36 93 59 38 29.90 29.74 29.59 10 10 4 23 14 31 0.01  
11 70 56 41 40 37 35 79 50 28 30.15 30.04 29.92 10 10 10 16 8 28 0.00  
12 78 62 45 47 44 38 83 52 32 30.28 30.22 30.17 10 10 8 13 6 21 0.00  
13 80 66 52 59 52 46 86 62 39 30.20 30.15 30.09 10 9 7 10 2 - 0.00 Rain
14 66 62 59 63 60 56 94 90 78 30.13 30.09 30.05 10 4 1 10 5 - 0.50 Rain
15 75 68 62 65 62 60 97 89 66 30.05 29.97 29.90 10 6 1 10 5 - 0.87 Rain
16 81 70 60 63 57 50 97 66 36 29.94 29.90 29.83 10 7 2 10 3 20 0.00  
17 72 62 53 57 44 39 78 55 32 30.15 30.08 29.95 10 10 8 15 7 23 0.00  
18 75 60 46 47 44 40 83 55 32 30.21 30.16 30.12 10 10 10 6 2 - 0.00  
19 82 64 48 53 48 44 86 55 30 30.18 30.14 30.09 10 10 8 9 2 16 0.00  
20 81 68 55 61 52 45 88 58 29 30.21 30.17 30.14 10 10 8 14 5 22 0.00  
21 71 66 62 62 61 59 94 86 73 30.15 30.05 29.96 10 9 5 14 9 20 0.00 Rain
22 77 68 62 61 60 59 94 78 60 29.93 29.87 29.80 10 9 7 7 4 - 0.00  
23 81 70 60 66 62 57 100 83 54 30.00 29.92 29.86 10 5 1 15 4 18 0.02 Rain
24 82 72 62 66 63 60 100 83 52 30.12 30.07 30.00 10 5 0 14 5 22 0.00 Fog
25 84 73 64 66 65 61 94 79 56 30.15 30.13 30.09 10 7 2 10 5 - 0.00 Rain
26 89 75 62 72 66 61 100 83 55 30.16 30.13 30.08 10 5 0 12 2 - 0.39 Fog , Rain , Thunderstorm
27 87 77 66 70 67 64 96 80 53 30.15 30.10 30.00 10 7 2 16 4 17 0.14 Rain
28 89 76 62 71 66 61 94 77 53 30.04 29.98 29.91 10 7 2 8 4 - 0.00  
29 91 80 68 70 67 63 94 78 45 29.91 29.81 29.70 10 7 2 32 6 41 0.61 Rain , Thunderstorm
30 82 73 64 66 63 57 94 77 42 29.81 29.76 29.71 10 8 4 7 3 - 0.00  
31 80 69 59 61 53 48 90 57 35 29.90 29.84 29.73 10 10 7 12 3 16 0.00