Weather History for Petersburg, AK

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Month of July, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 69 °F 59 °F 48 °F
Mean Temperature 58 °F 54 °F 47 °F
Min Temperature 53 °F 49 °F 41 °F
Degree Days  
Heating Degree Days (base 65) 18 11 6 339
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 8 4 0 131
Dew Point  
Dew Point 57 °F 48 °F 39 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 18 mph 3 mph 0 mph
Gust Wind 32 mph 19 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.27 in 30.06 in 29.84 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jul. 28, 2012 Rise Set
Actual Time 4:45 AM AKDT 9:10 PM AKDT
Civil Twilight 3:53 AM AKDT 10:01 PM AKDT
Nautical Twilight 2:28 AM AKDT 11:23 PM AKDT
Astronomical Twilight Sun does not rise Sun does not rise
Moon 5:35 PM AKDT (7/28) 12:03 AM AKDT (7/28)
Length of Visible Light 18h 08m
Length of Day
16h 24m
Waxing Gibbous, 77% of the Moon is Illuminated
Jul 28
Waxing Gibbous
Aug 1
Full
Aug 9
Last Quarter
Aug 17
New
Aug 24
First Quarter

Weather History Calendar

Precipitation Actual month total 0.00 Average Month Total: 7.83
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Overcast
Actual:
48 | 46 0.00
Average:
59 | 47 0.21
Partly Cloudy
Actual:
59 | 46 0.00
Average:
59 | 47 0.21
Fog
Actual:
59 | 42 0.00
Average:
59 | 47 0.22
Partly Cloudy
Actual:
57 | 46 0.00
Average:
59 | 47 0.22
Mostly Cloudy
Actual:
62 | 46 0.00
Average:
59 | 47 0.22
Mostly Cloudy
Actual:
69 | 46 0.00
Average:
59 | 47 0.23
Mostly Cloudy
Actual:
57 | 51 0.00
Average:
59 | 47 0.23
Overcast
Actual:
53 | 48 0.00
Average:
59 | 47 0.24
Overcast
Actual:
55 | 48 0.00
Average:
59 | 47 0.24
Mostly Cloudy
Actual:
55 | 48 0.00
Average:
59 | 47 0.25
Partly Cloudy
Actual:
59 | 44 0.00
Average:
59 | 47 0.25
Scattered Clouds
Actual:
69 | 41 0.00
Average:
59 | 47 0.26
Overcast
Actual:
57 | 53 0.00
Average:
59 | 47 0.26
Partly Cloudy
Actual:
64 | 51 0.00
Average:
59 | 48 0.26
Scattered Clouds
Actual:
62 | 46 0.00
Average:
59 | 48 0.27
Partly Cloudy
Actual:
64 | 51 0.00
Average:
59 | 48 0.27
Overcast
Actual:
57 | 53 0.00
Average:
59 | 48 0.26
Mostly Cloudy
Actual:
57 | 50 0.00
Average:
59 | 48 0.26
Mostly Cloudy
Actual:
55 | 51 0.00
Average:
59 | 48 0.26
Scattered Clouds
Actual:
66 | 51 0.00
Average:
59 | 48 0.26
Overcast
Actual:
60 | 53 0.00
Average:
59 | 48 0.25
Overcast
Actual:
60 | 51 0.00
Average:
59 | 48 0.24
Mostly Cloudy
Actual:
60 | 48 0.00
Average:
59 | 48 0.23
Mostly Cloudy
Actual:
62 | 51 0.00
Average:
59 | 48 0.78
Scattered Clouds
Actual:
64 | 46 0.00
Average:
59 | 48 0.22
Clear
Actual:
66 | 48 0.00
Average:
59 | 48 0.21
Overcast
Actual:
60 | 53 0.00
Average:
59 | 48 0.21
Overcast
Actual:
60 | 50 0.00
Average:
59 | 48 0.21
Overcast
Actual:
57 | 51 0.00
Average:
60 | 48 0.20
Overcast
Actual:
57 | 51 0.00
Average:
60 | 48 0.20
Overcast
Actual:
53 | 51 0.00
Average:
60 | 48 0.20
 

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
Jul high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 48 47 46 46 44 43 93 90 82 29.94 29.91 29.88 10 10 7 8 2 - 0.00  
2 59 52 46 50 46 45 93 83 59 29.90 29.88 29.86 10 10 10 7 2 - 0.00  
3 59 50 42 52 46 39 100 82 63 30.00 29.93 29.89 10 9 0 7 3 - 0.00 Fog
4 57 52 46 48 45 43 93 76 59 30.09 30.06 30.00 10 10 5 10 2 - 0.00  
5 62 54 46 48 44 43 93 69 48 30.06 30.05 30.04 10 10 10 7 2 - 0.00  
6 69 58 46 52 46 41 94 70 38 30.06 30.02 29.98 10 10 7 13 3 24 0.00  
7 57 54 51 50 48 46 94 82 67 30.19 30.12 30.03 10 9 5 7 3 - 0.00  
8 53 50 48 52 48 46 94 88 82 30.15 30.12 30.10 10 9 2 6 2 - 0.00  
9 55 52 48 54 50 46 100 91 82 30.10 29.96 29.84 10 7 2 15 1 21 0.00  
10 55 52 48 48 45 39 94 76 54 30.27 30.17 29.88 10 10 5 9 5 - 0.00  
11 59 52 44 46 44 39 93 76 51 30.25 30.20 30.15 10 10 10 9 4 - 0.00  
12 69 55 41 54 45 39 93 70 46 30.15 30.13 30.10 10 10 10 8 3 - 0.00  
13 57 55 53 57 52 46 100 85 67 30.22 30.18 30.14 10 9 4 6 1 - 0.00  
14 64 58 51 54 51 46 100 83 59 30.21 30.16 30.14 10 10 4 12 4 - 0.00  
15 62 54 46 52 48 45 93 73 59 30.24 30.21 30.16 10 10 10 8 4 - 0.00  
16 64 58 51 52 47 43 82 70 45 30.17 30.12 30.05 10 10 10 14 4 21 0.00  
17 57 55 53 48 45 45 77 70 63 30.05 30.01 29.98 10 10 10 13 6 18 0.00  
18 57 54 50 48 47 45 87 77 67 30.02 29.99 29.96 10 10 10 6 2 - 0.00  
19 55 53 51 54 49 45 100 89 67 29.98 29.96 29.94 10 10 10 6 2 - 0.00  
20 66 58 51 54 51 48 94 76 52 29.97 29.93 29.91 10 10 2 8 3 - 0.00  
21 60 56 53 57 54 52 100 93 82 30.17 30.10 29.98 10 8 1 6 1 - 0.00  
22 60 56 51 54 52 48 100 89 72 30.17 30.14 30.12 10 8 0 6 3 - 0.00  
23 60 54 48 54 51 46 94 86 72 30.22 30.19 30.17 10 9 0 7 2 - 0.00  
24 62 56 51 52 50 48 94 81 63 30.23 30.21 30.17 10 10 10 7 2 - 0.00  
25 64 55 46 54 49 45 94 78 59 30.17 30.10 30.02 10 10 0 8 3 - 0.00  
26 66 57 48 54 49 45 93 72 56 30.02 29.94 29.86 10 10 10 8 3 - 0.00  
27 60 56 53 55 52 48 94 89 77 30.07 29.95 29.87 10 9 3 9 2 - 0.00  
28 60 55 50 52 50 48 94 83 63 30.14 30.12 30.07 10 10 8 7 2 - 0.00  
29 57 54 51 54 50 45 94 88 76 30.10 30.07 30.03 10 10 8 7 2 - 0.00  
30 57 54 51 55 52 48 100 92 82 30.06 30.03 30.00 10 8 1 6 1 - 0.00  
31 53 52 51 52 49 46 94 85 77 30.05 29.98 29.94 10 8 4 18 4 32 0.00