Weather History for Ketchikan, AK

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 44 °F 37 °F 30 °F
Mean Temperature 40 °F 34 °F 26 °F
Min Temperature 37 °F 30 °F 19 °F
Degree Days  
Heating Degree Days (base 65) 40 31 24 967
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 43 °F 31 °F 13 °F
Precipitation  
Precipitation 1.43 in 0.30 in 0.00 in 9.18 in
Snowdepth - - - -
Wind  
Wind 34 mph 6 mph 0 mph
Gust Wind 46 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.40 in 29.67 in 29.02 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 04, 2012 Rise Set
Actual Time 7:55 AM AKST 3:18 PM AKST
Civil Twilight 7:10 AM AKST 4:03 PM AKST
Nautical Twilight 6:23 AM AKST 4:51 PM AKST
Astronomical Twilight 5:38 AM AKST 5:35 PM AKST
Moon 9:57 PM AKST (12/4) 11:14 AM AKST (12/4)
Length of Visible Light 8h 53m
Length of Day
7h 23m
Waning Gibbous, 68% of the Moon is Illuminated
Dec 4
Waning Gibbous
Dec 6
Last Quarter
Dec 12
New
Dec 19
First Quarter
Dec 28
Full

Weather History Calendar

Precipitation Actual month total 9.18 Average Month Total: 14.35
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Snow
Actual:
37 | 33 0.36
Average:
42 | 31 0.46
Snow
Actual:
37 | 33 1.11
Average:
41 | 31 0.56
Snow
Actual:
39 | 33 0.69
Average:
40 | 31 0.38
Snow
Actual:
37 | 33 0.47
Average:
39 | 30 0.42
Snow
Actual:
37 | 33 0.30
Average:
40 | 31 0.51
Snow
Actual:
37 | 33 0.38
Average:
41 | 30 0.71
Snow
Actual:
34 | 28 0.05
Average:
41 | 31 0.54
Snow
Actual:
34 | 30 0.20
Average:
41 | 30 0.64
Snow
Actual:
39 | 33 0.34
Average:
40 | 31 0.54
Rain
Actual:
44 | 35 0.79
Average:
40 | 31 0.42
Rain
Actual:
42 | 37 0.06
Average:
40 | 31 0.34
Rain
Actual:
41 | 33 0.69
Average:
41 | 31 0.35
Rain
Actual:
42 | 35 0.35
Average:
41 | 31 0.53
Rain
Actual:
42 | 35 1.43
Average:
40 | 31 0.51
Rain
Actual:
41 | 33 0.56
Average:
40 | 30 0.43
Snow
Actual:
34 | 27 0.18
Average:
40 | 31 0.33
Snow
Actual:
32 | 24 0.06
Average:
40 | 30 0.51
Mostly Cloudy
Actual:
37 | 23 0.00
Average:
39 | 29 0.52
Snow
Actual:
37 | 35 0.01
Average:
40 | 30 0.43
Snow
Actual:
36 | 30 0.01
Average:
39 | 30 0.60
Partly Cloudy
Actual:
34 | 25 0.00
Average:
39 | 28 0.20
Snow
Actual:
33 | 21 0.00
Average:
39 | 29 0.28
Partly Cloudy
Actual:
32 | 19 0.00
Average:
40 | 29 0.55
Partly Cloudy
Actual:
34 | 23 0.00
Average:
42 | 32 0.54
Partly Cloudy
Actual:
37 | 24 0.00
Average:
42 | 33 0.63
Scattered Clouds
Actual:
30 | 21 0.00
Average:
41 | 33 0.43
Snow
Actual:
35 | 30 0.61
Average:
39 | 29 0.21
Rain
Actual:
37 | 35 0.26
Average:
39 | 29 0.74
Rain
Actual:
37 | 35 0.02
Average:
39 | 29 0.30
Rain
Actual:
43 | 37 0.17
Average:
39 | 28 0.41
Partly Cloudy
Actual:
44 | 37 0.08
Average:
37 | 27 0.33
 

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 37 35 33 36 35 33 100 97 89 29.21 29.17 29.11 10 9 4 5 1 - 0.36 Rain , Snow
2 37 35 33 36 33 32 100 94 89 29.29 29.12 29.05 10 5 1 14 2 23 1.11 Rain , Snow
3 39 36 33 36 34 32 100 91 79 29.46 29.33 29.21 10 9 2 24 10 31 0.69 Rain , Snow
4 37 35 33 36 34 32 100 95 93 29.47 29.27 29.02 10 8 2 10 4 - 0.47 Rain , Snow
5 37 35 33 35 33 32 100 92 79 29.84 29.72 29.49 10 8 2 9 6 18 0.30 Rain , Snow
6 37 35 33 34 32 28 100 92 70 29.84 29.75 29.59 10 6 1 16 7 22 0.38 Rain , Snow
7 34 31 28 34 31 27 100 95 87 30.12 29.87 29.67 10 8 2 6 2 - 0.05 Snow
8 34 32 30 32 30 28 96 90 82 30.21 30.10 29.91 10 6 1 18 4 29 0.20 Snow
9 39 36 33 38 35 32 100 95 89 30.12 30.02 29.90 10 7 2 16 9 23 0.34 Rain , Snow
10 44 40 35 43 40 36 100 97 92 30.12 29.79 29.37 10 7 2 21 8 31 0.79 Rain
11 42 40 37 39 38 34 100 92 86 29.82 29.50 29.34 10 10 6 12 8 18 0.06 Rain
12 41 36 33 40 34 31 96 92 83 29.91 29.81 29.59 10 9 4 20 7 29 0.69 Rain
13 42 38 35 41 37 33 100 92 79 29.75 29.62 29.52 10 8 4 16 9 30 0.35 Rain
14 42 38 35 40 36 33 96 92 86 29.75 29.42 29.06 10 9 6 34 14 46 1.43 Rain
15 41 37 33 38 35 32 100 91 86 29.30 29.18 29.03 10 9 5 24 12 33 0.56 Rain
16 34 31 27 34 31 25 100 95 92 29.30 29.27 29.22 10 7 1 13 4 17 0.18 Snow
17 32 28 24 30 27 22 96 92 86 29.65 29.40 29.23 10 8 0 7 1 - 0.06 Fog , Snow
18 37 30 23 29 26 22 100 84 62 29.68 29.54 29.20 10 10 10 21 4 31 0.00  
19 37 36 35 30 28 27 82 73 65 29.42 29.21 29.09 10 9 3 23 13 37 0.01 Snow
20 36 33 30 29 26 23 82 73 59 29.72 29.56 29.44 10 10 9 9 2 - 0.01 Snow
21 34 30 25 26 20 15 82 65 46 29.78 29.75 29.72 10 10 10 9 3 18 0.00  
22 33 27 21 27 21 16 93 76 56 29.72 29.65 29.60 10 9 2 5 2 - 0.00 Snow
23 32 26 19 20 17 14 89 71 56 29.98 29.80 29.67 10 10 10 4 2 - 0.00  
24 34 28 23 18 14 13 65 56 46 30.07 29.99 29.88 10 10 10 6 1 - 0.00  
25 37 30 24 27 22 18 77 65 48 29.86 29.76 29.70 10 10 10 9 4 21 0.00  
26 30 26 21 24 21 17 92 80 66 29.95 29.87 29.76 10 10 10 5 1 - 0.00  
27 35 32 30 36 32 22 100 93 66 29.94 29.83 29.79 10 7 3 12 6 - 0.61 Rain , Snow
28 37 36 35 37 36 35 100 100 97 30.14 29.97 29.83 10 8 1 6 4 - 0.26 Rain
29 37 36 35 38 36 35 100 98 89 30.22 30.17 30.11 10 8 2 8 2 - 0.02 Rain
30 43 40 37 41 36 33 100 87 68 30.11 29.97 29.81 10 10 4 28 12 33 0.17 Rain
31 44 40 37 41 39 35 100 93 76 30.40 30.21 29.81 10 10 10 26 11 38 0.08