Weather History for Petersburg, AK

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Week of September 23, 2012 through September 29, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 57 °F 53 °F 48 °F
Mean Temperature 53 °F 49 °F 46 °F
Min Temperature 50 °F 45 °F 39 °F
Degree Days  
Heating Degree Days (base 65) 19 16 12 110
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 3 1 0 5
Dew Point  
Dew Point 54 °F 46 °F 37 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 17 mph 2 mph 0 mph
Gust Wind 30 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.24 in 29.96 in 29.42 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Sep. 29, 2012 Rise Set
Actual Time 6:52 AM AKDT 6:30 PM AKDT
Civil Twilight 6:14 AM AKDT 7:07 PM AKDT
Nautical Twilight 5:30 AM AKDT 7:52 PM AKDT
Astronomical Twilight 4:43 AM AKDT 8:38 PM AKDT
Moon 5:55 PM AKDT 6:36 AM AKDT
Length of Visible Light 12h 53m
Length of Day
11h 37m
Full, 100% of the Moon is Illuminated
Sep 29
Full
Sep 29
Full
Oct 7
Last Quarter
Oct 15
New
Oct 21
First Quarter

Daily Weather History & Observations

2012 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  
23 55 53 50 54 50 48 100 90 82 30.11 30.07 30.04 10 9 0 7 2 - 0.00  
24 55 50 42 48 46 41 100 89 67 30.24 30.19 30.11 10 7 0 6 1 - 0.00  
25 53 46 39 46 42 37 100 86 67 30.24 30.09 29.97 10 6 0 16 2 24 0.00  
26 57 52 46 50 47 45 93 85 67 30.00 29.83 29.52 10 9 3 17 3 29 0.00  
27 55 50 46 52 46 43 93 83 67 29.79 29.66 29.42 10 10 5 16 5 30 0.00  
28 51 48 46 46 45 43 93 88 82 29.92 29.85 29.78 10 10 6 8 1 - 0.00  
29 48 46 44 45 44 43 100 90 82 30.10 30.00 29.92 10 9 5 7 2 - 0.00