Weather History for Petersburg, AK

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Month of August, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 82 °F 64 °F 57 °F
Mean Temperature 66 °F 58 °F 52 °F
Min Temperature 59 °F 51 °F 44 °F
Degree Days  
Heating Degree Days (base 65) 12 7 0 222
Cooling Degree Days (base 65) 2 0 0 2
Growing Degree Days (base 50) 16 8 2 242
Dew Point  
Dew Point 59 °F 52 °F 43 °F
Precipitation  
Precipitation 0.25 in 0.04 in 0.00 in 1.30 in
Snowdepth - - - -
Wind  
Wind 13 mph 2 mph 0 mph
Gust Wind 18 mph 17 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.18 in 29.93 in 29.66 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Aug. 12, 2013 Rise Set
Actual Time 5:14 AM AKDT 8:37 PM AKDT
Civil Twilight 4:28 AM AKDT 9:23 PM AKDT
Nautical Twilight 3:25 AM AKDT 10:25 PM AKDT
Astronomical Twilight 1:29 AM AKDT 12:11 AM AKDT
Moon 12:37 PM AKDT (8/12) 10:07 PM AKDT (8/12)
Length of Visible Light 16h 54m
Length of Day
15h 23m
Waxing Crescent, 33% of the Moon is Illuminated
Aug 12
Waxing Crescent
Aug 14
First Quarter
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New

Weather History Calendar

Precipitation Actual month total 1.30 Average Month Total: 12.39
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
82 | 51 0.00
Average:
60 | 48 0.20
Clear
Actual:
77 | 51 0.00
Average:
60 | 48 0.20
Partly Cloudy
Actual:
71 | 51 0.00
Average:
60 | 48 0.20
Partly Cloudy
Actual:
66 | 59 0.00
Average:
60 | 48 0.21
Mostly Cloudy
Actual:
64 | 55 0.00
Average:
60 | 48 0.21
Fog
Actual:
66 | 53 0.00
Average:
60 | 48 0.21
Fog
Actual:
69 | 48 0.00
Average:
60 | 48 0.22
Rain
Actual:
60 | 55 0.00
Average:
60 | 48 1.06
Fog
Actual:
64 | 55 0.00
Average:
60 | 48 0.22
Scattered Clouds
Actual:
64 | 51 0.00
Average:
60 | 48 0.23
Clear
Actual:
66 | 53 0.00
Average:
60 | 48 0.23
Scattered Clouds
Actual:
69 | 51 0.00
Average:
60 | 48 0.24
Overcast
Actual:
62 | 51 0.00
Average:
60 | 48 0.25
Scattered Clouds
Actual:
64 | 55 0.00
Average:
59 | 48 0.26
Fog
Actual:
64 | 53 0.00
Average:
59 | 48 0.27
Fog
Actual:
66 | 53 0.01
Average:
59 | 48 0.29
Rain
Actual:
62 | 53 0.25
Average:
59 | 48 0.31
Mostly Cloudy
Actual:
57 | 50 0.19
Average:
59 | 48 0.33
Rain
Actual:
57 | 48 0.12
Average:
58 | 48 0.36
Rain
Actual:
59 | 50 0.01
Average:
58 | 48 0.38
Rain
Actual:
60 | 50 0.09
Average:
58 | 48 0.41
Rain
Actual:
59 | 50 0.11
Average:
58 | 48 0.43
Fog
Actual:
62 | 51 0.00
Average:
58 | 48 0.44
Fog
Actual:
66 | 48 0.00
Average:
58 | 47 0.46
Overcast
Actual:
64 | 53 0.03
Average:
57 | 47 0.48
Rain
Actual:
64 | 51 0.17
Average:
57 | 47 0.50
Overcast
Actual:
57 | 50 0.15
Average:
57 | 47 0.52
Fog
Actual:
60 | 48 0.00
Average:
57 | 46 1.59
Partly Cloudy
Actual:
62 | 44 0.00
Average:
57 | 46 0.55
Overcast
Actual:
66 | 51 0.15
Average:
56 | 46 0.56
Rain
Actual:
60 | 53 0.02
Average:
56 | 45 0.57
 

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

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Aug high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 82 66 51 57 54 45 76 59 39 30.05 30.02 29.98 10 10 10 5 2 - 0.00  
2 77 64 51 55 54 50 94 65 47 30.06 30.04 30.02 10 10 10 6 2 - 0.00  
3 71 61 51 59 55 48 94 76 60 30.18 30.16 30.14 10 10 10 8 3 - 0.00  
4 66 62 59 57 55 52 88 75 64 30.12 30.09 30.06 10 10 10 8 4 - 0.00  
5 64 60 55 57 55 54 94 86 77 30.08 30.07 30.05 10 9 3 6 2 - 0.00  
6 66 60 53 55 54 52 94 83 64 30.06 30.04 30.01 10 9 3 6 2 - 0.00 Fog
7 69 58 48 55 52 46 94 74 56 30.01 29.97 29.94 10 10 2 7 3 - 0.00 Fog
8 60 58 55 57 56 54 94 91 88 30.05 30.01 29.96 10 6 2 6 2 - 0.00 Fog , Rain
9 64 60 55 55 54 52 94 85 68 30.08 30.07 30.06 10 7 0 7 2 - 0.00 Fog
10 64 58 51 52 50 48 88 71 56 30.06 30.04 30.01 10 10 10 7 3 - 0.00  
11 66 60 53 52 51 48 88 70 56 30.03 30.01 29.97 10 10 10 9 3 - 0.00  
12 69 60 51 54 51 46 94 67 53 30.01 29.99 29.96 10 10 10 7 3 - 0.00  
13 62 56 51 55 54 48 94 85 72 30.07 30.05 30.03 10 9 7 4 1 - 0.00  
14 64 60 55 55 53 48 88 74 68 29.93 29.85 29.80 10 10 10 8 4 - 0.00  
15 64 58 53 57 54 48 94 84 68 29.93 29.87 29.80 10 9 0 6 2 - 0.00 Fog
16 66 60 53 55 54 52 94 83 68 29.91 29.85 29.81 10 10 10 8 2 - 0.01 Fog
17 62 58 53 55 53 52 94 88 72 29.83 29.75 29.68 10 9 5 13 2 18 0.25 Fog , Rain
18 57 54 50 52 50 45 94 86 72 29.79 29.76 29.70 10 9 5 13 3 17 0.19  
19 57 52 48 52 48 45 94 88 72 30.01 29.86 29.74 10 10 4 6 1 - 0.12 Rain
20 59 54 50 54 50 46 94 88 77 30.17 30.11 30.02 10 9 0 8 2 - 0.01 Fog , Rain
21 60 55 50 52 48 46 94 80 63 30.15 29.99 29.90 10 9 1 7 1 - 0.09 Fog , Rain
22 59 54 50 55 51 48 94 91 88 29.91 29.89 29.88 10 7 0 5 1 - 0.11 Fog , Rain
23 62 56 51 54 51 48 94 85 68 29.87 29.77 29.67 10 8 0 7 2 - 0.00 Fog
24 66 57 48 54 50 46 94 80 52 29.69 29.67 29.66 10 9 2 8 1 - 0.00 Fog
25 64 58 53 52 50 46 94 74 55 29.77 29.73 29.67 10 10 10 13 5 18 0.03  
26 64 58 51 54 51 48 94 84 63 29.79 29.75 29.69 10 10 7 7 2 - 0.17 Fog , Rain
27 57 54 50 54 51 48 94 92 82 29.89 29.81 29.73 10 9 0 6 2 - 0.15  
28 60 54 48 52 48 45 94 83 63 29.90 29.88 29.86 10 6 0 7 2 - 0.00 Fog
29 62 53 44 52 48 43 93 81 59 29.86 29.78 29.72 10 9 0 7 2 - 0.00  
30 66 58 51 55 53 48 94 88 64 30.04 29.93 29.76 10 9 3 8 1 - 0.15  
31 60 56 53 55 53 52 94 90 82 30.08 30.04 29.96 10 8 2 6 0 - 0.02 Fog , Rain