Weather History for Petersburg, AK

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 75 °F 58 °F 46 °F
Mean Temperature 63 °F 52 °F 42 °F
Min Temperature 55 °F 47 °F 35 °F
Degree Days  
Heating Degree Days (base 65) 22 12 2 375
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 13 3 0 102
Dew Point  
Dew Point 57 °F 47 °F 34 °F
Precipitation  
Precipitation 0.76 in 0.13 in 0.00 in 3.89 in
Snowdepth - - - -
Wind  
Wind 18 mph 3 mph 0 mph
Gust Wind 33 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.23 in 29.74 in 28.91 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 05, 2013 Rise Set
Actual Time 6:03 AM AKDT 7:36 PM AKDT
Civil Twilight 5:23 AM AKDT 8:15 PM AKDT
Nautical Twilight 4:34 AM AKDT 9:04 PM AKDT
Astronomical Twilight 3:37 AM AKDT 10:00 PM AKDT
Moon 6:36 AM AKDT (9/5) 7:11 PM AKDT (9/5)
Length of Visible Light 14h 51m
Length of Day
13h 32m
New Moon, 0% of the Moon is Illuminated
Sep 5
New Moon
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New

Weather History Calendar

Precipitation Actual month total 3.89 Average Month Total: 20.69
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Fog
Actual:
64 | 51 0.00
Average:
56 | 45 0.58
Fog
Actual:
62 | 51 0.00
Average:
55 | 45 0.59
Scattered Clouds
Actual:
73 | 46 0.00
Average:
55 | 44 0.59
Rain
Actual:
57 | 55 0.09
Average:
55 | 44 0.60
Mostly Cloudy
Actual:
62 | 51 0.01
Average:
54 | 44 0.60
Fog
Actual:
66 | 48 0.00
Average:
54 | 44 0.61
Partly Cloudy
Actual:
75 | 51 0.00
Average:
54 | 44 0.61
Rain
Actual:
64 | 48 0.62
Average:
54 | 44 0.62
Partly Cloudy
Actual:
60 | 44 0.00
Average:
54 | 43 0.63
Rain
Actual:
60 | 48 0.00
Average:
53 | 43 1.83
Partly Cloudy
Actual:
66 | 53 0.00
Average:
53 | 43 0.65
Fog
Actual:
60 | 51 0.00
Average:
53 | 43 0.66
Fog
Actual:
57 | 48 0.00
Average:
53 | 43 0.66
Fog
Actual:
60 | 44 0.00
Average:
53 | 43 0.67
Fog
Actual:
59 | 44 0.00
Average:
53 | 43 0.68
Rain
Actual:
57 | 48 0.07
Average:
53 | 43 0.68
Rain
Actual:
55 | 50 0.08
Average:
53 | 43 0.69
Fog
Actual:
57 | 48 0.00
Average:
52 | 43 0.69
Rain
Actual:
59 | 48 0.76
Average:
52 | 43 0.69
Rain
Actual:
57 | 51 0.57
Average:
52 | 43 0.69
Rain
Actual:
53 | 48 0.30
Average:
52 | 43 0.68
Rain
Actual:
53 | 48 0.40
Average:
52 | 42 0.68
Rain
Actual:
53 | 44 0.03
Average:
51 | 42 0.68
Rain
Actual:
53 | 39 0.00
Average:
51 | 41 0.67
Fog
Actual:
57 | 35 0.00
Average:
51 | 41 0.67
Overcast
Actual:
50 | 46 0.32
Average:
50 | 41 0.66
Rain
Actual:
50 | 46 0.44
Average:
50 | 40 0.66
Rain
Actual:
51 | 41 0.07
Average:
50 | 40 0.66
Rain
Actual:
46 | 39 0.01
Average:
50 | 40 0.66
Fog
Actual:
46 | 39 0.12
Average:
50 | 40 0.65
 

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
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 64 58 51 54 51 48 94 84 63 29.97 29.88 29.84 10 7 0 6 2 - 0.00 Fog
2 62 56 51 54 52 48 94 84 72 29.99 29.94 29.89 10 7 0 7 3 - 0.00 Fog
3 73 60 46 55 51 45 94 75 47 30.00 29.96 29.90 10 9 0 8 2 - 0.00  
4 57 56 55 55 53 50 94 88 82 30.06 30.03 29.97 10 8 4 6 2 - 0.09 Rain
5 62 56 51 55 53 48 94 85 68 30.22 30.16 30.06 10 9 1 7 1 - 0.01  
6 66 57 48 52 49 45 100 80 52 30.23 30.17 30.11 10 9 1 6 1 - 0.00 Fog
7 75 63 51 57 54 48 94 73 50 30.11 29.98 29.81 10 10 10 7 1 - 0.00  
8 64 56 48 57 50 46 93 75 52 30.16 30.05 29.82 10 9 4 10 4 20 0.62 Rain
9 60 52 44 48 47 43 94 83 63 30.16 30.14 30.11 10 8 0 6 2 - 0.00  
10 60 54 48 52 48 45 93 81 67 30.11 30.08 29.88 10 10 7 8 1 - 0.00 Fog , Rain
11 66 60 53 54 51 48 94 76 64 30.09 30.03 29.97 10 10 10 6 2 - 0.00  
12 60 56 51 55 52 50 94 90 77 30.06 30.03 29.99 10 7 1 6 2 - 0.00 Fog
13 57 52 48 52 48 45 94 83 72 30.10 30.04 29.94 10 9 1 7 2 - 0.00 Fog
14 60 52 44 50 46 41 93 80 67 29.94 29.87 29.79 10 10 10 7 3 - 0.00 Fog
15 59 52 44 48 46 41 93 78 67 29.73 29.64 29.57 10 10 10 6 3 - 0.00 Fog
16 57 52 48 52 48 45 93 84 72 29.72 29.67 29.60 10 10 7 9 3 - 0.07 Fog , Rain
17 55 52 50 50 47 46 88 83 77 29.79 29.74 29.71 10 10 7 8 2 - 0.08 Rain
18 57 52 48 48 46 45 93 81 67 29.85 29.82 29.72 10 10 9 8 1 - 0.00 Fog
19 59 52 48 52 48 45 93 83 67 29.70 29.35 29.13 10 9 5 15 5 30 0.76 Rain
20 57 54 51 52 50 45 88 83 72 29.45 29.24 29.12 10 8 5 14 8 26 0.57 Rain
21 53 50 48 46 43 39 93 76 62 29.45 29.29 29.07 10 10 8 18 7 33 0.30 Rain
22 53 50 48 46 44 39 93 75 62 29.23 29.04 28.97 10 9 5 15 9 28 0.40 Rain
23 53 48 44 45 42 39 93 78 58 29.69 29.46 29.23 10 9 5 10 3 22 0.03 Rain
24 53 46 39 45 42 37 93 84 67 30.11 29.93 29.70 10 10 9 7 2 - 0.00 Fog , Rain
25 57 46 35 45 40 34 93 85 59 30.18 30.13 30.06 10 7 0 6 1 - 0.00 Fog
26 50 48 46 46 45 43 93 89 82 30.06 29.89 29.75 10 8 4 6 2 - 0.32  
27 50 48 46 45 44 39 93 87 66 29.75 29.50 29.11 10 8 5 12 3 24 0.44 Rain
28 51 46 41 45 41 37 93 75 58 29.10 28.96 28.91 10 10 1 12 6 22 0.07 Rain
29 46 42 39 43 40 36 93 90 87 29.14 29.01 28.91 10 6 0 6 2 - 0.01 Fog , Rain
30 46 42 39 45 42 37 93 92 87 29.51 29.31 29.15 10 4 0 6 2 - 0.12 Fog