Weather History for Petersburg, AK

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Month of January, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 44 °F 32 °F 5 °F
Mean Temperature 40 °F 28 °F 0 °F
Min Temperature 37 °F 24 °F -4 °F
Degree Days  
Heating Degree Days (base 65) 64 36 24 1131
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 39 °F 24 °F -11 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 25 mph 5 mph 0 mph
Gust Wind 40 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.60 in 29.67 in 28.51 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 05, 2012 Rise Set
Actual Time 8:26 AM AKST 3:27 PM AKST
Civil Twilight 7:39 AM AKST 4:15 PM AKST
Nautical Twilight 6:49 AM AKST 5:05 PM AKST
Astronomical Twilight 6:02 AM AKST 5:51 PM AKST
Moon 12:34 PM AKST (1/5) 5:19 AM AKST (1/5)
Length of Visible Light 8h 36m
Length of Day
7h 00m
Waxing Gibbous, 88% of the Moon is Illuminated
Jan 5
Waxing Gibbous
Jan 8
Full
Jan 16
Last Quarter
Jan 22
New
Jan 30
First Quarter

Weather History Calendar

Precipitation Actual month total 0.00 Average Month Total: 16.36
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Overcast
Actual:
39 | 33 0.00
Average:
32 | 24 0.49
Partly Cloudy
Actual:
42 | 28 0.00
Average:
32 | 24 0.48
Overcast
Actual:
42 | 30 0.00
Average:
32 | 24 0.47
Mostly Cloudy
Actual:
42 | 35 0.00
Average:
31 | 24 0.46
Partly Cloudy
Actual:
37 | 28 0.00
Average:
31 | 24 0.45
Partly Cloudy
Actual:
37 | 30 0.00
Average:
31 | 23 0.44
Overcast
Actual:
39 | 35 0.00
Average:
31 | 23 0.42
Mostly Cloudy
Actual:
44 | 37 0.00
Average:
31 | 23 0.42
Partly Cloudy
Actual:
37 | 28 0.00
Average:
31 | 23 0.41
Partly Cloudy
Actual:
32 | 21 0.00
Average:
31 | 23 0.40
Overcast
Actual:
37 | 32 0.00
Average:
31 | 23 0.39
Overcast
Actual:
39 | 35 0.00
Average:
32 | 24 0.38
Partly Cloudy
Actual:
33 | 24 0.00
Average:
32 | 24 0.80
Scattered Clouds
Actual:
28 | 23 0.00
Average:
32 | 24 0.36
Scattered Clouds
Actual:
24 | 10 0.00
Average:
32 | 24 0.35
Scattered Clouds
Actual:
10 | 0 0.00
Average:
32 | 24 0.34
Clear
Actual:
5 | -4 0.00
Average:
32 | 24 0.77
Clear
Actual:
8 | -4 0.00
Average:
32 | 24 0.33
Clear
Actual:
8 | 1 0.00
Average:
32 | 24 0.33
Overcast
Actual:
28 | 14 0.00
Average:
32 | 24 0.33
Overcast
Actual:
33 | 24 0.00
Average:
32 | 24 0.33
Overcast
Actual:
35 | 30 0.00
Average:
32 | 24 0.68
Snow
Actual:
35 | 28 0.00
Average:
32 | 25 0.33
Overcast
Actual:
39 | 33 0.00
Average:
32 | 25 0.33
Overcast
Actual:
42 | 30 0.00
Average:
33 | 25 0.33
Partly Cloudy
Actual:
30 | 23 0.00
Average:
33 | 26 0.61
Partly Cloudy
Actual:
30 | 26 0.00
Average:
34 | 26 0.52
Overcast
Actual:
35 | 26 0.00
Average:
34 | 26 0.50
Overcast
Actual:
37 | 33 0.00
Average:
34 | 26 2.79
Overcast
Actual:
35 | 33 0.00
Average:
34 | 26 0.56
Overcast
Actual:
39 | 33 0.00
Average:
34 | 26 0.56
 

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
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 39 36 33 36 30 27 93 78 61 29.87 29.52 29.24 10 7 2 18 9 38 0.00  
2 42 35 28 37 31 27 100 85 70 29.71 29.57 29.32 10 10 7 17 8 26 0.00  
3 42 36 30 37 32 27 93 85 75 29.64 29.38 29.23 10 9 4 13 3 24 0.00  
4 42 38 35 39 36 34 100 90 76 29.26 29.09 28.82 10 6 2 21 4 33 0.00  
5 37 32 28 36 31 27 100 90 75 30.06 29.82 29.42 10 8 2 13 3 18 0.00  
6 37 34 30 34 27 21 100 74 56 30.02 29.86 29.76 10 8 2 15 7 22 0.00  
7 39 37 35 37 34 32 100 88 81 29.83 29.52 29.37 10 6 3 15 6 28 0.00  
8 44 40 37 37 35 30 87 80 70 29.71 29.62 29.46 10 9 5 18 8 29 0.00  
9 37 32 28 34 25 19 93 72 56 30.30 29.96 29.63 10 10 7 16 6 23 0.00  
10 32 26 21 25 21 18 93 78 55 30.60 30.55 30.49 10 10 7 7 2 - 0.00  
11 37 34 32 34 30 25 93 85 75 30.41 30.27 30.16 10 3 1 12 5 18 0.00  
12 39 37 35 34 32 30 93 85 75 30.01 29.83 29.71 10 7 3 13 5 31 0.00  
13 33 28 24 28 27 21 100 88 75 30.12 30.02 29.84 10 6 0 8 3 - 0.00  
14 28 26 23 27 20 16 100 80 64 30.11 29.91 29.80 10 10 10 12 4 20 0.00  
15 24 18 10 16 9 1 100 73 40 30.38 30.34 30.27 10 10 10 14 5 18 0.00  
16 10 5 0 7 -3 -11 92 67 47 30.43 30.41 30.39 10 10 10 9 2 - 0.00  
17 5 0 -4 0 -4 -9 100 81 61 30.40 30.32 30.28 10 10 10 6 3 - 0.00  
18 8 2 -4 7 -1 -9 100 85 66 30.28 30.14 29.98 10 10 10 5 2 - 0.00  
19 8 4 1 3 1 -4 100 82 67 29.95 29.81 29.64 10 10 10 6 1 - 0.00  
20 28 21 14 21 16 5 93 81 62 29.49 29.20 28.87 10 4 1 9 5 17 0.00  
21 33 28 24 28 23 19 87 79 64 28.89 28.77 28.71 10 6 0 18 7 29 0.00  
22 35 32 30 28 27 25 93 82 65 29.24 29.16 29.04 10 9 1 12 5 16 0.00  
23 35 32 28 30 28 27 100 85 70 29.30 29.23 29.13 10 6 0 12 3 22 0.00 Snow
24 39 36 33 36 31 27 100 81 70 29.15 28.79 28.68 10 8 3 16 8 24 0.00  
25 42 36 30 36 28 25 93 80 70 29.53 29.29 28.51 10 4 0 25 9 40 0.00  
26 30 26 23 27 21 18 93 76 64 29.94 29.79 29.59 10 8 0 13 6 17 0.00  
27 30 28 26 27 23 19 100 82 64 30.18 30.02 29.82 10 9 1 8 3 - 0.00  
28 35 30 26 32 29 23 100 89 75 30.06 29.54 29.19 10 4 0 10 3 - 0.00  
29 37 35 33 36 33 30 100 92 87 29.23 29.21 29.18 10 8 5 7 2 - 0.00  
30 35 34 33 32 31 30 93 88 81 29.45 29.40 29.35 10 6 2 8 3 - 0.00  
31 39 36 33 36 33 30 100 88 75 29.64 29.46 29.40 10 9 5 14 2 21 0.00