Weather History for Petersburg, AK

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Wednesday, August 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 55 °F -  
Max Temperature 60 °F 58 °F 71 °F (1997)
Min Temperature 50 °F 48 °F 39 °F (1986)
Degree Days  
Heating Degree Days 10    
Growing Degree Days 5 (Base 50)    
Moisture  
Dew Point 48 °F    
Average Humidity 80    
Maximum Humidity 94    
Minimum Humidity 63    
Precipitation  
Precipitation 0.09 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.99 in    
Wind  
Wind Speed 1 mph (ENE)    
Max Wind Speed 7 mph    
Max Gust Speed -    
Visibility 9 miles    
Events Fog , Rain    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 21, 2013 Rise Set
Actual Time 5:32 AM AKDT 8:15 PM AKDT
Civil Twilight 4:49 AM AKDT 8:58 PM AKDT
Nautical Twilight 3:53 AM AKDT 9:54 PM AKDT
Astronomical Twilight 2:37 AM AKDT 11:07 PM AKDT
Moon 8:00 PM AKDT (8/21) 6:42 AM AKDT (8/21)
Length of Visible Light 16h 08m
Length of Day
14h 42m
Full, 99% of the Moon is Illuminated
Aug 21
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter
Sep 19
Full

Hourly Weather History & Observations

Time (AKDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:16 AM 51.8 °F 48.2 °F 88% 30.15 in 10.0 mi Calm Calm - N/A   Overcast
12:36 AM 50.0 °F 46.4 °F 87% 30.15 in 10.0 mi Calm Calm - N/A   Overcast
12:56 AM 50.0 °F 46.4 °F 87% 30.15 in 10.0 mi Calm Calm - N/A   Overcast
6:05 AM 51.8 °F 46.4 °F 82% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
6:16 AM 51.8 °F 46.4 °F 82% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
6:36 AM 51.8 °F 46.4 °F 82% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
6:56 AM 51.8 °F 48.2 °F 88% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
7:16 AM 51.8 °F 48.2 °F 88% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
7:56 AM 51.8 °F 46.4 °F 82% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
8:36 AM 51.8 °F 48.2 °F 88% 30.07 in 10.0 mi Calm Calm - N/A   Overcast
8:56 AM 53.6 °F 48.2 °F 82% 30.07 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:16 AM 55.4 °F 48.2 °F 77% 30.06 in 10.0 mi NNE 5.8 mph - N/A   Mostly Cloudy
9:36 AM 53.6 °F 48.2 °F 82% 30.06 in 10.0 mi NNE 4.6 mph - N/A   Mostly Cloudy
9:55 AM 55.4 °F 48.2 °F 77% 30.05 in 10.0 mi NNE 6.9 mph - N/A   Scattered Clouds
10:16 AM 55.4 °F 46.4 °F 72% 30.04 in 10.0 mi ENE 5.8 mph - N/A   Scattered Clouds
10:36 AM 55.4 °F 48.2 °F 77% 30.03 in 10.0 mi East 4.6 mph - N/A   Scattered Clouds
10:56 AM 55.4 °F 48.2 °F 77% 30.03 in 10.0 mi East 5.8 mph - N/A   Mostly Cloudy
11:16 AM 57.2 °F 48.2 °F 72% 30.02 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
11:56 AM 55.4 °F 46.4 °F 72% 30.01 in 10.0 mi East 4.6 mph - N/A   Mostly Cloudy
12:16 PM 57.2 °F 46.4 °F 67% 30.01 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:56 PM 59.0 °F 46.4 °F 63% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
1:16 PM 60.8 °F 48.2 °F 63% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
1:36 PM 60.8 °F 48.2 °F 63% 29.99 in 10.0 mi ENE 3.5 mph - N/A   Overcast
1:56 PM 60.8 °F 48.2 °F 63% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
2:16 PM 60.8 °F 48.2 °F 63% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
2:55 PM 57.2 °F 51.8 °F 82% 29.97 in 10.0 mi NE 3.5 mph - N/A Rain Light Rain Showers
3:16 PM 57.2 °F 51.8 °F 82% 29.96 in 10.0 mi NE 5.8 mph - N/A   Overcast
3:36 PM 55.4 °F 48.2 °F 77% 29.96 in 10.0 mi East 3.5 mph - N/A   Overcast
3:56 PM 55.4 °F 48.2 °F 77% 29.95 in 10.0 mi Calm Calm - N/A   Overcast
4:16 PM 55.4 °F 48.2 °F 77% 29.94 in 10.0 mi East 3.5 mph - N/A   Overcast
4:36 PM 55.4 °F 48.2 °F 77% 29.94 in 10.0 mi ENE 4.6 mph - N/A   Overcast
4:56 PM 53.6 °F 48.2 °F 82% 29.94 in 10.0 mi East 4.6 mph - N/A   Overcast
5:16 PM 55.4 °F 48.2 °F 77% 29.94 in 10.0 mi ESE 3.5 mph - N/A   Overcast
5:36 PM 55.4 °F 48.2 °F 77% 29.94 in 10.0 mi Calm Calm - N/A   Overcast
5:56 PM 55.4 °F 51.8 °F 88% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
6:16 PM 55.4 °F 51.8 °F 88% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
7:16 PM 53.6 °F 51.8 °F 94% 29.91 in 7.0 mi Calm Calm - N/A   Overcast
7:36 PM 53.6 °F 48.2 °F 82% 29.91 in 7.0 mi Calm Calm - N/A   Overcast
7:55 PM 53.6 °F 50.0 °F 88% 29.99 in 7.0 mi Calm Calm - N/A Fog , Rain Light Rain
8:16 PM 51.8 °F 48.2 °F 88% 29.91 in 3.0 mi Calm Calm - N/A   Overcast
8:56 PM 51.8 °F 48.2 °F 88% 29.90 in 5.0 mi NE 3.5 mph - N/A   Overcast
9:16 PM 51.8 °F 48.2 °F 88% 29.90 in 5.0 mi Calm Calm - N/A   Overcast
9:36 PM 51.8 °F 48.2 °F 88% 29.90 in 5.0 mi Calm Calm - N/A   Overcast
9:56 PM 51.8 °F 48.2 °F 88% 29.90 in 5.0 mi Calm Calm - 0.02 in   Overcast
10:56 PM 51.8 °F 48.2 °F 88% 29.90 in 3.0 mi NE 3.5 mph - 0.04 in   Mostly Cloudy
11:16 PM 51.8 °F 48.2 °F 88% 29.90 in 1.2 mi Calm Calm - 0.02 in   Mostly Cloudy
11:36 PM 51.8 °F 48.2 °F 88% 29.90 in 2.5 mi Calm Calm - 0.02 in   Mostly Cloudy
11:56 PM 51.8 °F 48.2 °F 88% 29.90 in 6.0 mi Calm Calm - 0.03 in   Overcast