History for Lancaster, PA

Month of December, 2011 — View Current Conditions
Month of December, 2011
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Daily Weekly Monthly Custom
  Max Avg Min Sum
Temperature
Max Temperature 60 °F 47 °F 33 °F
Mean Temperature 56 °F 39 °F 27 °F
Min Temperature 53 °F 31 °F 21 °F
Degree Days
Heating Degree Days (base 65) 38 26 8 803
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 0 0 6
Dew Point
Dew Point 59 °F 31 °F 13 °F
Precipitation
Precipitation 1.09 in 0.09 in 0.00 in 2.85 in
Snowdepth - - - -
Wind
Wind 31 mph 6 mph 0 mph
Gust Wind 40 mph 22 mph 16 mph
Sea Level Pressure
Sea Level Pressure 30.68 in 30.17 in 29.37 in
Monthly Graph
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Date:
Astronomy
May. 25, 2013 Rise Set
Actual Time 7:24 AM EST 4:43 PM EST
Civil Twilight 6:53 AM EST 5:13 PM EST
Nautical Twilight 6:19 AM EST 5:48 PM EST
Astronomical Twilight 5:46 AM EST 6:21 PM EST
Moon 5:05 AM EST (12/22) 2:51 PM EST (12/22)
Length Of Visible Light 10h 20m
Length of Day
9h 18m
Waning Crescent, 6% of the Moon is Illuminated
Dec 22
Waning Crescent
Dec 24
New
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
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Monthly Calendar Overview
Print This Calendar Precipitation: Actual month total 2.85 Average month total 2.93
« Previous Month « 2010 December 2011 2012 » Next Month »
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
1 Clear
Actual: 48 | 33
Precip: 0.00
Average: 46 | 30
Precip: 0.13
2 Clear
Actual: 51 | 27
Precip: 0.00
Average: 47 | 30
Precip: 0.12
3 Clear
Actual: 45 | 27
Precip: 0.00
Average: 47 | 28
Precip: 0.14
4 Clear
Actual: 53 | 30
Precip: 0.00
Average: 48 | 30
Precip: 0.16
5 Fog
Actual: 55 | 35
Precip: 0.00
Average: 45 | 30
Precip: 0.14
6 Rain
Actual: 60 | 53
Precip: 0.05
Average: 44 | 30
Precip: 0.05
7 Snow
Actual: 60 | 35
Precip: 1.09
Average: 46 | 30
Precip: 0.01
8 Rain
Actual: 42 | 30
Precip: 0.02
Average: 46 | 29
Precip: 0.03
9 Scattered Clouds
Actual: 48 | 28
Precip: 0.00
Average: 45 | 26
Precip: 0.17
10 Clear
Actual: 42 | 27
Precip: 0.00
Average: 42 | 25
Precip: 0.08
11 Clear
Actual: 37 | 23
Precip: 0.00
Average: 43 | 27
Precip: 0.02
12 Clear
Actual: 39 | 21
Precip: 0.00
Average: 42 | 26
Precip: 0.13
13 Clear
Actual: 48 | 23
Precip: 0.00
Average: 43 | 26
Precip: 0.14
14 Overcast
Actual: 46 | 28
Precip: 0.00
Average: 43 | 25
Precip: 0.12
15 Rain
Actual: 57 | 41
Precip: 0.02
Average: 45 | 26
Precip: 0.11
16 Clear
Actual: 54 | 33
Precip: 0.00
Average: 43 | 25
Precip: 0.11
17 Snow
Actual: 39 | 30
Precip: 0.00
Average: 42 | 27
Precip: 0.14
18 Partly Cloudy
Actual: 35 | 27
Precip: 0.00
Average: 40 | 24
Precip: 0.19
19 Partly Cloudy
Actual: 48 | 25
Precip: 0.00
Average: 39 | 23
Precip: 0.04
20 Rain
Actual: 46 | 37
Precip: 0.07
Average: 39 | 24
Precip: 0.03
21 Rain
Actual: 60 | 39
Precip: 0.16
Average: 39 | 23
Precip: 0.15
22 Rain
Actual: 57 | 43
Precip: 0.41
Average: 41 | 23
Precip: 0.08
23 Rain
Actual: 46 | 33
Precip: 0.41
Average: 43 | 23
Precip: 0.05
24 Partly Cloudy
Actual: 39 | 27
Precip: 0.00
Average: 41 | 23
Precip: 0.06
25 Scattered Clouds
Actual: 46 | 26
Precip: 0.00
Average: 41 | 22
Precip: 0.25
26 Scattered Clouds
Actual: 45 | 28
Precip: 0.00
Average: 36 | 20
Precip: 0.00
27 Rain
Actual: 50 | 28
Precip: 0.61
Average: 35 | 19
Precip: 0.04
28 Partly Cloudy
Actual: 41 | 26
Precip: 0.01
Average: 37 | 24
Precip: 0.10
29 Snow
Actual: 33 | 21
Precip: 0.00
Average: 38 | 24
Precip: 0.06
30 Scattered Clouds
Actual: 46 | 28
Precip: 0.00
Average: 38 | 24
Precip: 0.02
31 Rain
Actual: 52 | 37
Precip: 0.00
Average: 38 | 22
Precip: 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 Observations
2011 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 48 40 33 31 28 26 79 67 50 30.33 30.25 30.10 10 10 10 14 7 18 0.00  
2 51 39 27 32 28 24 92 67 41 30.55 30.39 30.30 10 9 4 14 3 - 0.00  
3 45 36 27 30 28 24 89 73 53 30.68 30.62 30.55 10 9 6 8 4 - 0.00  
4 53 42 30 41 35 30 100 86 54 30.57 30.48 30.39 10 6 1 14 3 18 0.00  
5 55 45 35 49 42 35 100 92 74 30.38 30.31 30.15 10 3 0 6 3 - 0.00 Fog
6 60 56 53 58 56 51 100 94 88 30.12 30.01 29.88 10 5 2 14 6 20 0.05 Rain
7 60 48 35 59 49 33 100 93 81 29.88 29.74 29.57 10 4 1 18 6 31 1.09 Rain , Snow
8 42 37 30 34 27 23 93 69 51 30.34 30.07 29.72 10 10 8 23 15 34 0.02 Rain
9 48 38 28 34 29 26 89 72 50 30.34 30.28 30.21 10 8 3 10 2 - 0.00  
10 42 35 27 29 22 15 82 61 41 30.54 30.36 30.23 10 10 9 17 8 22 0.00  
11 37 30 23 21 17 13 78 60 37 30.68 30.62 30.54 10 10 8 6 3 - 0.00  
12 39 30 21 26 22 18 88 73 47 30.61 30.55 30.48 10 7 4 4 0 - 0.00  
13 48 36 23 27 23 20 92 67 35 30.46 30.42 30.38 10 8 3 12 5 16 0.00  
14 46 37 28 36 31 24 89 73 58 30.43 30.37 30.28 10 7 4 7 2 - 0.00  
15 57 49 41 50 41 34 83 73 59 30.25 29.98 29.80 10 10 6 14 6 22 0.02 Rain
16 54 45 33 47 28 23 80 57 47 30.19 30.11 29.82 10 10 10 23 12 31 0.00  
17 39 34 30 30 26 23 89 73 53 30.20 30.17 30.13 10 9 2 12 7 - 0.00 Snow
18 35 31 27 25 20 16 82 68 57 30.33 30.26 30.18 10 10 8 9 3 - 0.00  
19 48 36 25 32 26 21 88 65 44 30.28 30.15 30.03 10 9 5 12 3 - 0.00  
20 46 42 37 38 36 33 97 82 63 30.18 30.13 30.04 10 8 5 9 5 - 0.07 Rain
21 60 50 39 55 46 37 97 91 80 30.10 29.88 29.72 10 5 1 17 6 24 0.16 Rain
22 57 50 43 47 43 39 93 80 55 30.14 30.01 29.88 10 8 2 10 4 - 0.41 Rain
23 46 40 33 46 40 27 100 84 58 30.24 29.96 29.78 10 7 2 17 10 24 0.41 Rain
24 39 33 27 29 23 19 88 69 47 30.46 30.39 30.22 10 10 7 12 4 - 0.00  
25 46 36 26 31 25 21 81 73 48 30.39 30.23 29.97 10 9 7 10 2 18 0.00  
26 45 36 28 28 26 24 85 63 48 30.30 30.21 29.99 10 10 9 20 10 26 0.00  
27 50 39 28 48 38 25 100 93 82 30.20 29.61 29.37 10 4 0 18 6 24 0.61 Fog , Rain
28 41 34 26 37 24 14 100 66 46 29.97 29.70 29.44 10 9 1 31 14 40 0.01  
29 33 27 21 29 22 13 93 78 57 30.07 30.01 29.97 10 7 1 9 6 - 0.00 Snow
30 46 37 28 36 31 26 92 79 61 30.05 29.97 29.87 10 8 3 7 2 - 0.00  
31 52 44 37 40 38 36 96 76 61 30.10 29.92 29.83 10 9 4 14 5 22 0.00 Rain
Comma Delimited File