Weather History for Lancaster, PA

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 90 °F 76 °F 64 °F
Mean Temperature 78 °F 65 °F 54 °F
Min Temperature 71 °F 56 °F 39 °F
Degree Days  
Heating Degree Days (base 65) 11 3 0 86
Cooling Degree Days (base 65) 13 3 0 92
Growing Degree Days (base 50) 28 15 4 458
Dew Point  
Dew Point 74 °F 56 °F 37 °F
Precipitation  
Precipitation 2.71 in 0.20 in 0.00 in 5.98 in
Snowdepth - - - -
Wind  
Wind 37 mph 5 mph 0 mph
Gust Wind 55 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.39 in 30.04 in 29.56 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 10, 2012 Rise Set
Actual Time 6:41 AM EDT 7:21 PM EDT
Civil Twilight 6:14 AM EDT 7:48 PM EDT
Nautical Twilight 5:42 AM EDT 8:21 PM EDT
Astronomical Twilight 5:08 AM EDT 8:54 PM EDT
Moon 1:00 AM EDT (9/10) 3:49 PM EDT (9/10)
Length of Visible Light 13h 34m
Length of Day
12h 39m
Waning Crescent, 30% of the Moon is Illuminated
Sep 10
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Weather History Calendar

Precipitation Actual month total 5.98 Average Month Total: 3.76
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
90 | 68 0.00
Average:
81 | 59 0.12
Rain
Actual:
78 | 66 0.13
Average:
82 | 60 0.03
Rain
Actual:
75 | 71 0.07
Average:
82 | 61 0.14
Rain
Actual:
84 | 71 2.71
Average:
81 | 58 0.15
Partly Cloudy
Actual:
82 | 68 0.00
Average:
79 | 57 0.01
Rain
Actual:
82 | 66 0.00
Average:
80 | 58 0.27
Thunderstorm
Actual:
88 | 66 0.00
Average:
80 | 59 0.05
Thunderstorm
Actual:
84 | 64 0.66
Average:
78 | 57 0.32
Scattered Clouds
Actual:
75 | 55 0.01
Average:
77 | 56 0.03
Scattered Clouds
Actual:
72 | 51 0.00
Average:
80 | 57 0.10
Clear
Actual:
75 | 45 0.00
Average:
80 | 57 0.06
Clear
Actual:
79 | 48 0.00
Average:
79 | 56 0.06
Clear
Actual:
79 | 51 0.00
Average:
79 | 56 0.19
Clear
Actual:
80 | 52 0.00
Average:
78 | 57 0.11
Scattered Clouds
Actual:
73 | 54 0.00
Average:
77 | 56 0.13
Scattered Clouds
Actual:
72 | 48 0.00
Average:
74 | 53 0.09
Scattered Clouds
Actual:
75 | 48 0.00
Average:
76 | 54 0.11
Thunderstorm
Actual:
75 | 62 1.67
Average:
76 | 53 0.12
Rain
Actual:
68 | 50 0.07
Average:
75 | 54 0.19
Clear
Actual:
72 | 45 0.00
Average:
76 | 52 0.09
Clear
Actual:
75 | 48 0.00
Average:
76 | 54 0.06
Rain
Actual:
81 | 60 0.05
Average:
73 | 55 0.33
Scattered Clouds
Actual:
64 | 48 0.00
Average:
74 | 51 0.02
Scattered Clouds
Actual:
64 | 44 0.00
Average:
71 | 48 0.08
Clear
Actual:
71 | 39 0.00
Average:
70 | 48 0.36
Rain
Actual:
75 | 62 0.01
Average:
72 | 50 0.12
Rain
Actual:
73 | 61 0.48
Average:
74 | 49 0.36
Rain
Actual:
75 | 57 0.12
Average:
72 | 48 0.04
Partly Cloudy
Actual:
64 | 53 0.00
Average:
70 | 47 0.01
Rain
Actual:
66 | 48 0.00
Average:
72 | 48 0.01
 

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
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 90 78 68 67 63 58 84 62 38 30.05 30.02 29.98 10 9 5 14 5 18 0.00  
2 78 72 66 72 69 63 100 87 73 30.07 30.04 30.00 10 4 1 9 4 - 0.13 Rain
3 75 73 71 72 70 68 94 90 84 30.08 30.05 30.02 10 6 2 12 5 - 0.07 Rain
4 84 78 71 74 71 68 100 88 65 30.06 29.98 29.83 10 4 1 23 6 30 2.71 Rain
5 82 76 68 72 69 64 87 77 60 29.87 29.83 29.80 10 10 10 10 7 21 0.00  
6 82 74 66 70 66 64 93 80 62 29.93 29.89 29.86 10 9 6 8 2 - 0.00 Rain
7 88 77 66 71 67 64 94 75 45 29.94 29.90 29.83 10 8 3 10 3 - 0.00 Thunderstorm
8 84 73 64 70 66 59 94 83 62 29.85 29.72 29.61 10 7 0 37 6 55 0.66 Fog , Rain , Thunderstorm
9 75 65 55 58 54 51 93 70 45 29.96 29.87 29.83 10 10 10 13 5 - 0.01  
10 72 60 51 53 48 43 93 66 39 30.17 30.06 29.96 10 10 10 14 7 24 0.00  
11 75 60 45 51 47 43 93 65 38 30.31 30.26 30.18 10 10 10 8 2 - 0.00  
12 79 63 48 54 51 47 93 67 39 30.38 30.33 30.30 10 9 5 8 1 - 0.00  
13 79 65 51 58 53 48 100 75 39 30.39 30.34 30.28 10 7 1 7 1 - 0.00  
14 80 66 52 61 55 50 94 73 44 30.29 30.20 30.11 10 8 2 9 2 - 0.00  
15 73 63 54 60 49 46 87 61 41 30.22 30.16 30.12 10 10 10 17 8 24 0.00  
16 72 60 48 52 47 38 93 65 30 30.16 30.12 30.07 10 10 5 13 3 - 0.00  
17 75 60 48 61 52 45 93 72 42 30.14 30.07 29.98 10 9 2 12 3 - 0.00  
18 75 68 62 70 66 60 100 92 81 29.96 29.74 29.56 10 6 0 20 9 34 1.67 Fog , Rain , Thunderstorm
19 68 58 50 59 47 40 93 67 37 30.18 30.05 29.83 10 10 7 13 8 20 0.07 Rain
20 72 58 45 51 48 43 93 73 45 30.20 30.14 30.08 10 10 7 8 1 - 0.00  
21 75 60 48 58 54 47 93 76 57 30.09 30.04 29.98 10 9 5 13 4 - 0.00  
22 81 70 60 66 60 53 94 77 52 29.96 29.87 29.77 10 9 2 12 8 18 0.05 Rain
23 64 56 48 47 42 38 80 60 40 30.16 30.08 29.93 10 10 10 14 9 24 0.00  
24 64 54 44 46 41 37 90 65 40 30.23 30.17 30.13 10 10 10 12 5 23 0.00  
25 71 55 39 55 46 37 89 68 39 30.20 30.14 30.09 10 10 5 14 2 20 0.00  
26 75 68 62 62 59 54 90 73 58 30.10 30.07 30.03 10 10 8 13 6 20 0.01 Rain
27 73 67 61 63 62 60 97 88 64 30.18 30.14 30.08 9 4 1 7 3 - 0.48 Rain
28 75 66 57 64 61 50 100 85 57 30.11 30.04 29.95 10 4 0 9 3 - 0.12 Fog , Rain
29 64 58 53 52 49 47 88 73 58 29.99 29.96 29.91 10 10 10 12 7 16 0.00  
30 66 57 48 50 48 46 93 77 49 29.91 29.86 29.82 10 9 4 13 6 23 0.00 Rain