Weather History for Somerville, NJ

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 64 °F 46 °F 32 °F
Mean Temperature 53 °F 38 °F 28 °F
Min Temperature 44 °F 31 °F 19 °F
Degree Days  
Heating Degree Days (base 65) 36 27 12 826
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 3 0 0 3
Dew Point  
Dew Point 55 °F 32 °F 12 °F
Precipitation  
Precipitation 1.44 in 0.16 in 0.00 in 5.10 in
Snowdepth - - - -
Wind  
Wind 24 mph 4 mph 0 mph
Gust Wind 41 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.51 in 29.99 in 29.09 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 09, 2012 Rise Set
Actual Time 7:11 AM EST 4:31 PM EST
Civil Twilight 6:40 AM EST 5:02 PM EST
Nautical Twilight 6:06 AM EST 5:36 PM EST
Astronomical Twilight 5:32 AM EST 6:09 PM EST
Moon 2:40 AM EST (12/9) 1:37 PM EST (12/9)
Length of Visible Light 10h 21m
Length of Day
9h 20m
Waning Crescent, 19% of the Moon is Illuminated
Dec 9
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Weather History Calendar

Precipitation Actual month total 5.10 Average Month Total: 3.61
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Overcast
Actual:
42 | 36 0.00
Average:
46 | 26 0.07
Rain
Actual:
46 | 39 0.07
Average:
45 | 25 0.16
Fog
Actual:
63 | 36 0.01
Average:
46 | 26 0.17
Rain
Actual:
64 | 42 0.06
Average:
45 | 25 0.20
Rain
Actual:
54 | 33 0.08
Average:
44 | 25 0.13
Clear
Actual:
41 | 24 0.00
Average:
42 | 26 0.11
Rain
Actual:
39 | 21 0.25
Average:
46 | 26 0.10
Rain
Actual:
50 | 39 0.27
Average:
44 | 26 0.06
Rain
Actual:
46 | 35 0.27
Average:
43 | 26 0.13
Fog
Actual:
54 | 44 0.04
Average:
43 | 26 0.12
Rain
Actual:
51 | 33 0.03
Average:
43 | 26 0.11
Clear
Actual:
44 | 28 0.01
Average:
41 | 25 0.13
Clear
Actual:
46 | 24 0.00
Average:
42 | 25 0.09
Clear
Actual:
50 | 19 0.00
Average:
42 | 26 0.19
Scattered Clouds
Actual:
46 | 23 0.01
Average:
41 | 23 0.13
Rain
Actual:
46 | 37 0.37
Average:
42 | 25 0.14
Rain
Actual:
44 | 39 0.26
Average:
43 | 24 0.20
Rain
Actual:
55 | 42 0.26
Average:
40 | 23 0.07
Scattered Clouds
Actual:
48 | 30 0.00
Average:
37 | 20 0.08
Rain
Actual:
46 | 26 0.18
Average:
37 | 21 0.05
Rain
Actual:
57 | 36 1.44
Average:
39 | 22 0.17
Snow
Actual:
39 | 35 0.00
Average:
40 | 22 0.15
Partly Cloudy
Actual:
43 | 24 0.00
Average:
38 | 22 0.10
Snow
Actual:
39 | 19 0.00
Average:
39 | 21 0.10
Rain
Actual:
39 | 28 0.14
Average:
39 | 20 0.16
Snow
Actual:
37 | 24 0.88
Average:
36 | 20 0.06
Rain
Actual:
39 | 30 0.27
Average:
36 | 19 0.09
Partly Cloudy
Actual:
39 | 24 0.00
Average:
35 | 20 0.08
Snow
Actual:
32 | 25 0.00
Average:
40 | 23 0.12
Snow
Actual:
36 | 28 0.20
Average:
39 | 22 0.04
Partly Cloudy
Actual:
37 | 25 0.00
Average:
37 | 19 0.10
 

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 42 39 36 38 33 28 96 80 70 30.51 30.45 30.42 10 8 2 8 5 - 0.00  
2 46 42 39 44 41 39 100 96 83 30.41 30.27 30.12 7 2 0 5 0 - 0.07 Fog , Rain
3 63 50 36 51 42 35 100 92 60 30.25 30.18 30.11 10 3 0 5 0 - 0.01 Fog
4 64 53 42 55 48 41 100 91 70 30.25 30.16 29.97 - - - 5 0 - 0.06 Rain
5 54 44 33 52 36 18 100 67 41 30.26 30.06 29.91 10 10 10 18 5 29 0.08 Rain
6 41 32 24 23 19 17 88 61 40 30.38 30.31 30.26 10 10 10 8 3 - 0.00  
7 39 30 21 40 34 20 100 95 86 30.28 30.12 30.01 10 4 1 5 0 - 0.25 Rain
8 50 44 39 47 44 39 100 96 87 30.01 29.94 29.87 10 3 0 5 0 - 0.27 Fog , Rain
9 46 40 35 46 40 36 100 91 73 30.23 30.12 29.99 10 5 0 9 2 - 0.27 Fog , Rain
10 54 49 44 54 50 43 100 99 93 29.96 29.65 29.55 10 2 0 4 0 - 0.04 Fog
11 51 44 33 52 36 31 100 72 54 30.20 29.89 29.58 10 10 3 16 9 25 0.03 Rain
12 44 36 28 31 27 23 96 78 45 30.43 30.36 30.20 10 10 10 7 1 - 0.01  
13 46 35 24 29 24 22 96 75 37 30.47 30.40 30.33 10 10 8 6 2 - 0.00  
14 50 34 19 28 23 17 92 72 33 30.32 30.24 30.16 10 10 7 7 1 - 0.00  
15 46 34 23 34 29 22 96 80 56 30.33 30.25 30.19 10 10 8 5 1 - 0.01  
16 46 42 37 45 42 34 100 91 74 30.19 30.01 29.89 10 6 2 10 2 - 0.37 Rain
17 44 42 39 43 41 38 100 94 89 29.89 29.79 29.60 10 6 1 7 4 - 0.26 Rain
18 55 48 42 47 43 32 100 90 66 29.65 29.53 29.46 10 5 0 15 3 30 0.26 Fog , Rain
19 48 41 30 32 27 25 82 58 44 30.15 29.88 29.67 10 10 10 20 7 28 0.00  
20 46 36 26 44 30 24 93 78 55 30.21 30.07 29.71 10 10 5 9 2 18 0.18 Rain
21 57 46 36 55 44 27 100 85 60 29.64 29.28 29.09 10 6 1 23 12 41 1.44 Rain
22 39 37 35 32 23 18 89 58 41 29.85 29.60 29.35 10 10 9 22 9 33 0.00 Snow
23 43 34 24 24 21 15 88 59 34 29.97 29.92 29.86 10 10 10 9 5 18 0.00  
24 39 29 19 33 26 16 96 82 50 30.10 30.00 29.91 10 6 1 7 1 - 0.00 Rain , Snow
25 39 34 28 34 30 24 100 83 64 30.26 30.05 29.90 10 7 2 14 3 16 0.14 Rain
26 37 30 24 34 27 19 93 84 59 30.28 29.96 29.49 10 6 0 17 6 32 0.88 Fog , Rain , Snow
27 39 34 30 36 29 18 93 77 60 29.88 29.52 29.28 10 9 4 21 14 38 0.27 Rain
28 39 32 24 23 21 19 88 65 53 30.09 30.03 29.90 10 10 10 12 7 21 0.00  
29 32 28 25 31 28 23 100 89 75 30.04 29.68 29.52 10 5 0 12 2 20 0.00 Fog , Snow
30 36 32 28 23 16 12 69 53 44 30.19 29.96 29.65 10 10 5 24 15 40 0.20 Rain , Snow
31 37 31 25 25 20 12 67 60 52 30.21 30.08 29.91 10 10 10 7 2 20 0.00