Weather History for Williamsport, PA

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 66 °F 43 °F 31 °F
Mean Temperature 58 °F 37 °F 27 °F
Min Temperature 49 °F 31 °F 20 °F
Degree Days  
Heating Degree Days (base 65) 38 28 7 868
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 7 0 0 7
Dew Point  
Dew Point 54 °F 30 °F 15 °F
Precipitation  
Precipitation 1.22 in 0.22 in 0.00 in 5.61 in
Snowdepth 8.0 in 1.3 in 0.0 in -
Wind  
Wind 30 mph 6 mph 0 mph
Gust Wind 43 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.51 in 30.00 in 29.26 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 04, 2012 Rise Set
Actual Time 7:17 AM EST 4:38 PM EST
Civil Twilight 6:46 AM EST 5:09 PM EST
Nautical Twilight 6:12 AM EST 5:44 PM EST
Astronomical Twilight 5:38 AM EST 6:17 PM EST
Moon 10:26 PM EST (12/4) 11:08 AM EST (12/4)
Length of Visible Light 10h 23m
Length of Day
9h 21m
Waning Gibbous, 69% of the Moon is Illuminated
Dec 4
Waning Gibbous
Dec 6
Last Quarter
Dec 13
New
Dec 20
First Quarter
Dec 28
Full

Weather History Calendar

Precipitation Actual month total 5.61 Normal Month Total: 2.93
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
44 | 39 T
Average:
43 | 29 0.12
Clear
Actual:
48 | 41 0.04
Average:
43 | 29 0.11
Rain
Actual:
51 | 44 T
Average:
42 | 28 0.12
Rain
Actual:
66 | 49 0.11
Average:
42 | 28 0.12
Rain
Actual:
54 | 31 0.03
Average:
41 | 28 0.11
Scattered Clouds
Actual:
40 | 24 0.00
Average:
41 | 27 0.11
Rain
Actual:
38 | 29 0.45
Average:
41 | 27 0.11
Rain
Actual:
46 | 38 0.25
Average:
40 | 27 0.11
Rain
Actual:
44 | 36 0.11
Average:
40 | 26 0.12
Rain
Actual:
50 | 41 0.27
Average:
40 | 26 0.11
Rain
Actual:
43 | 30 0.03
Average:
39 | 26 0.11
Partly Cloudy
Actual:
42 | 26 0.00
Average:
39 | 25 0.11
Clear
Actual:
42 | 21 0.00
Average:
39 | 25 0.09
Fog
Actual:
48 | 20 0.00
Average:
38 | 25 0.09
Rain
Actual:
44 | 24 T
Average:
38 | 24 0.09
Rain
Actual:
48 | 38 0.01
Average:
38 | 24 0.09
Rain
Actual:
48 | 43 0.78
Average:
37 | 24 0.08
Rain
Actual:
47 | 37 0.05
Average:
37 | 24 0.08
Partly Cloudy
Actual:
45 | 28 0.00
Average:
37 | 23 0.08
Snow
Actual:
42 | 27 0.51
Average:
37 | 23 0.08
Snow
Actual:
46 | 34 1.22
Average:
36 | 23 0.09
Snow
Actual:
38 | 33 T
Average:
36 | 22 0.08
Partly Cloudy
Actual:
40 | 23 0.00
Average:
36 | 22 0.09
Snow
Actual:
37 | 22 0.09
Average:
36 | 22 0.08
Overcast
Actual:
37 | 29 T
Average:
36 | 22 0.09
Snow
Actual:
31 | 24 1.04
Average:
36 | 21 0.08
Snow
Actual:
32 | 28 0.16
Average:
35 | 21 0.08
Partly Cloudy
Actual:
33 | 22 0.00
Average:
35 | 21 0.08
Snow
Actual:
31 | 23 0.46
Average:
35 | 21 0.07
Mostly Cloudy
Actual:
33 | 27 T
Average:
35 | 21 0.08
Partly Cloudy
Actual:
37 | 20 0.00
Average:
35 | 20 0.07
 

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
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 44 42 39 38 35 30 82 69 55 30.44 30.39 30.36 10 7 4 15 7 20 T Rain
2 48 45 41 - - - - - - - - - - - - 14 5 23 0.04  
3 51 48 44 50 49 46 100 95 89 30.23 30.20 30.17 4 1 0 5 0 6 T Fog , Rain
4 66 58 49 54 52 48 96 80 63 30.19 30.12 29.89 10 5 1 24 7 33 0.11 Rain
5 54 43 31 49 32 16 89 65 40 30.33 30.15 29.99 10 10 10 22 10 30 0.03 Rain
6 40 32 24 23 19 16 75 60 44 30.40 30.31 30.22 10 10 10 10 3 14 0.00  
7 38 34 29 37 31 21 92 74 56 30.19 30.08 30.00 10 7 3 14 3 20 0.45 Rain
8 46 42 38 45 40 37 100 93 86 30.06 29.93 29.86 6 4 0 8 3 13 0.25 Fog , Rain
9 44 40 36 43 36 30 100 85 70 30.26 30.13 29.97 10 7 0 14 4 21 0.11 Fog , Rain
10 50 46 41 48 44 37 93 90 86 29.92 29.66 29.54 10 6 2 16 7 22 0.27 Rain
11 43 37 30 40 33 22 92 68 43 30.20 29.93 29.71 10 10 7 17 4 22 0.03 Rain
12 42 34 26 28 25 19 92 66 39 30.47 30.37 30.20 10 10 7 12 2 15 0.00  
13 42 32 21 25 22 18 96 68 39 30.51 30.43 30.33 10 9 7 9 1 13 0.00  
14 48 34 20 30 23 18 100 71 42 30.32 30.27 30.19 10 8 0 12 1 16 0.00 Fog
15 44 34 24 31 28 23 100 81 62 30.35 30.24 30.11 10 9 5 17 3 21 T Rain
16 48 43 38 43 38 32 86 78 70 30.09 29.95 29.84 10 10 7 18 11 26 0.01 Rain
17 48 46 43 45 43 42 100 93 86 29.84 29.75 29.57 10 5 2 16 8 23 0.78 Rain
18 47 42 37 45 39 27 100 82 64 29.76 29.57 29.49 10 7 1 24 8 31 0.05 Rain
19 45 37 28 33 30 28 92 73 53 30.18 29.95 29.77 10 10 7 17 7 24 0.00  
20 42 35 27 39 30 25 100 80 59 30.20 29.96 29.49 10 7 2 24 10 32 0.51 Rain , Snow
21 46 40 34 43 32 25 96 80 64 29.44 29.31 29.26 10 8 2 26 12 37 1.22 Rain , Snow
22 38 36 33 28 21 19 82 65 48 29.95 29.71 29.38 10 10 4 30 17 43 T Snow
23 40 32 23 23 21 17 88 64 40 30.00 29.94 29.87 10 10 10 16 6 23 0.00  
24 37 30 22 30 25 19 100 76 52 30.08 29.98 29.89 10 6 1 12 5 20 0.09 Snow
25 37 33 29 34 28 19 92 76 59 30.31 30.11 29.90 10 6 2 12 5 17 T  
26 31 28 24 29 23 16 100 79 58 30.31 29.92 29.56 10 5 0 15 5 21 1.04 Fog , Rain , Snow
27 32 30 28 29 24 19 100 82 63 29.98 29.72 29.54 10 8 1 24 13 31 0.16 Snow
28 33 28 22 23 22 20 92 78 63 30.13 30.08 29.99 10 10 7 16 5 21 0.00  
29 31 27 23 28 24 20 96 83 69 30.02 29.75 29.59 10 3 0 15 7 21 0.46 Fog , Snow
30 33 30 27 21 18 15 75 63 51 30.26 30.07 29.79 10 10 9 26 12 37 T  
31 37 29 20 28 20 16 84 68 51 30.24 30.07 29.91 10 10 7 17 5 24 0.00