Weather History for Petersburg, AK

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Wednesday, September 26, 2012

  Actual Average Record
Temperature  
Mean Temperature 52 °F -  
Max Temperature 57 °F 50 °F 68 °F (1991)
Min Temperature 46 °F 41 °F 29 °F (1983)
Degree Days  
Heating Degree Days 14    
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 85    
Maximum Humidity 93    
Minimum Humidity 67    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.83 in    
Wind  
Wind Speed 3 mph (SE)    
Max Wind Speed 17 mph    
Max Gust Speed 29 mph    
Visibility 9 miles    
Events      
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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Date:

Astronomy

Sep. 26, 2012 Rise Set
Actual Time 6:46 AM AKDT 6:38 PM AKDT
Civil Twilight 6:08 AM AKDT 7:15 PM AKDT
Nautical Twilight 5:23 AM AKDT 8:00 PM AKDT
Astronomical Twilight 4:36 AM AKDT 8:47 PM AKDT
Moon 5:06 PM AKDT (9/26) 2:47 AM AKDT (9/26)
Length of Visible Light 13h 07m
Length of Day
11h 51m
Waxing Gibbous, 89% of the Moon is Illuminated
Sep 26
Waxing Gibbous
Sep 29
Full
Oct 7
Last Quarter
Oct 15
New
Oct 21
First Quarter

Hourly Weather History & Observations

Time (AKDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:16 AM 48.2 °F - 44.6 °F 87% 29.97 in 5.0 mi Calm Calm - N/A   Overcast
12:36 AM 48.2 °F - 44.6 °F 87% 29.97 in 9.0 mi Calm Calm - N/A   Overcast
12:56 AM 48.2 °F - 44.6 °F 87% 29.98 in 7.0 mi South 3.5 mph - N/A   Overcast
1:16 AM 46.4 °F - 44.6 °F 93% 29.98 in 4.0 mi Calm Calm - N/A   Overcast
1:36 AM 46.4 °F 45.2 °F 44.6 °F 93% 29.98 in 5.0 mi SSW 3.5 mph - N/A   Overcast
1:56 AM 46.4 °F 44.3 °F 44.6 °F 93% 29.99 in 7.0 mi West 4.6 mph - N/A   Mostly Cloudy
2:16 AM 46.4 °F - 44.6 °F 93% 29.99 in 9.0 mi Calm Calm - N/A   Overcast
2:36 AM 46.4 °F - 44.6 °F 93% 29.99 in 8.0 mi Calm Calm - N/A   Overcast
2:56 AM 46.4 °F - 44.6 °F 93% 30.00 in 7.0 mi Calm Calm - N/A   Overcast
3:16 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.00 in 10.0 mi SSW 3.5 mph - N/A   Overcast
3:36 AM 46.4 °F - 44.6 °F 93% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
3:56 AM 48.2 °F - 44.6 °F 87% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
4:16 AM 48.2 °F - 44.6 °F 87% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
4:36 AM 48.2 °F - 44.6 °F 87% 29.99 in 9.0 mi Calm Calm - N/A   Overcast
4:56 AM 48.2 °F - 44.6 °F 87% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
5:16 AM 48.2 °F - 44.6 °F 87% 30.00 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:36 AM 46.4 °F - 44.6 °F 93% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
5:56 AM 46.4 °F - 44.6 °F 93% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
6:16 AM 46.4 °F - 44.6 °F 93% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
6:36 AM 46.4 °F 45.2 °F 44.6 °F 93% 29.99 in 10.0 mi WSW 3.5 mph - N/A   Overcast
6:56 AM 46.4 °F - 44.6 °F 93% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
7:16 AM 46.4 °F - 44.6 °F 93% 29.97 in 10.0 mi Calm Calm - N/A   Overcast
7:36 AM 48.2 °F - 46.4 °F 93% 29.97 in 10.0 mi Calm Calm - N/A   Overcast
7:56 AM 48.2 °F - 46.4 °F 93% 29.97 in 10.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
8:16 AM 48.2 °F - 46.4 °F 93% 29.96 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:36 AM 50.0 °F - 46.4 °F 87% 29.95 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 48.2 °F - 46.4 °F 93% 29.95 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
9:16 AM 48.2 °F - 46.4 °F 93% 29.95 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:36 AM 48.2 °F - 46.4 °F 93% 29.95 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:56 AM 50.0 °F - 46.4 °F 87% 29.95 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:16 AM 51.8 °F - 46.4 °F 82% 29.95 in 10.0 mi WNW 3.5 mph - N/A   Mostly Cloudy
10:36 AM 50.0 °F - 46.4 °F 87% 29.93 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
10:56 AM 51.8 °F - 46.4 °F 82% 29.92 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:16 AM 51.8 °F - 46.4 °F 82% 29.91 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
11:36 AM 51.8 °F - 46.4 °F 82% 29.91 in 10.0 mi East 3.5 mph - N/A   Scattered Clouds
11:56 AM 53.6 °F - 44.6 °F 72% 29.91 in 10.0 mi South 6.9 mph - N/A   Scattered Clouds
12:16 PM 53.6 °F - 44.6 °F 72% 29.91 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:36 PM 53.6 °F - 44.6 °F 72% 29.89 in 10.0 mi SSE 6.9 mph - N/A   Scattered Clouds
12:56 PM 53.6 °F - 46.4 °F 77% 29.89 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:16 PM 55.4 °F - 44.6 °F 67% 29.87 in 10.0 mi ESE 3.5 mph - N/A   Scattered Clouds
1:36 PM 55.4 °F - 44.6 °F 67% 29.85 in 10.0 mi ESE 5.8 mph - N/A   Scattered Clouds
2:16 PM 55.4 °F - 46.4 °F 72% 29.84 in 10.0 mi East 11.5 mph - N/A   Overcast
2:36 PM 53.6 °F - 46.4 °F 77% 29.84 in 10.0 mi East 9.2 mph 18.4 mph N/A   Overcast
2:56 PM 53.6 °F - 48.2 °F 82% 29.83 in 3.0 mi East 6.9 mph 16.1 mph N/A   Overcast
3:16 PM 53.6 °F - 48.2 °F 82% 29.82 in 3.0 mi East 8.1 mph 16.1 mph N/A   Overcast
3:36 PM 53.6 °F - 48.2 °F 82% 29.81 in 3.0 mi ESE 8.1 mph - N/A   Overcast
3:56 PM 53.6 °F - 48.2 °F 82% 29.80 in 10.0 mi East 10.4 mph - N/A   Overcast
4:16 PM 53.6 °F - 48.2 °F 82% 29.78 in 10.0 mi ESE 15.0 mph 21.9 mph N/A   Overcast
4:36 PM 55.4 °F - 48.2 °F 77% 29.75 in 10.0 mi East 15.0 mph 23.0 mph N/A   Overcast
4:56 PM 55.4 °F - 46.4 °F 72% 29.75 in 10.0 mi ESE 13.8 mph 25.3 mph N/A   Overcast
5:16 PM 55.4 °F - 48.2 °F 77% 29.74 in 10.0 mi East 8.1 mph 19.6 mph N/A   Overcast
5:36 PM 55.4 °F - 48.2 °F 77% 29.71 in 10.0 mi ENE 9.2 mph - N/A   Overcast
5:56 PM 55.4 °F - 48.2 °F 77% 29.70 in 10.0 mi SE 10.4 mph 16.1 mph N/A   Overcast
6:16 PM - - - N/A% 29.66 in 10.0 mi ESE 17.3 mph 23.0 mph N/A   Overcast
6:36 PM 57.2 °F - 48.2 °F 72% 29.65 in 10.0 mi ESE 15.0 mph 28.8 mph N/A   Overcast
6:56 PM 55.4 °F - 48.2 °F 77% 29.63 in 10.0 mi ESE 11.5 mph 21.9 mph N/A   Mostly Cloudy
7:16 PM 55.4 °F - 48.2 °F 77% 29.61 in 10.0 mi ESE 6.9 mph 21.9 mph N/A   Mostly Cloudy
7:36 PM 55.4 °F - 48.2 °F 77% 29.60 in 10.0 mi ESE 6.9 mph 21.9 mph N/A   Mostly Cloudy
7:56 PM 55.4 °F - 48.2 °F 77% 29.58 in 10.0 mi East 6.9 mph 19.6 mph N/A   Overcast
8:16 PM 55.4 °F - 50.0 °F 82% 29.56 in 10.0 mi East 8.1 mph - N/A   Overcast
8:36 PM 55.4 °F - 50.0 °F 82% 29.55 in 10.0 mi ENE 5.8 mph - N/A   Overcast
8:56 PM 53.6 °F - 50.0 °F 88% 29.56 in 10.0 mi WNW 4.6 mph - N/A   Overcast
9:16 PM 53.6 °F - 50.0 °F 88% 29.55 in 10.0 mi NNW 5.8 mph - N/A   Overcast
9:36 PM 53.6 °F - 50.0 °F 88% 29.55 in 10.0 mi ESE 4.6 mph - N/A   Overcast
9:56 PM 53.6 °F - 50.0 °F 88% 29.56 in 3.0 mi Calm Calm - N/A   Overcast
10:16 PM 53.6 °F - 50.0 °F 88% 29.55 in 10.0 mi NNE 5.8 mph - N/A   Overcast
10:36 PM 53.6 °F - 50.0 °F 88% 29.53 in 5.0 mi SSE 3.5 mph - N/A   Overcast
10:56 PM 53.6 °F - 50.0 °F 88% 29.52 in 5.0 mi SW 3.5 mph - N/A   Overcast
11:16 PM 53.6 °F - 50.0 °F 88% 29.53 in 4.0 mi Calm Calm - N/A   Overcast
11:36 PM 53.6 °F - 50.0 °F 88% 29.54 in 5.0 mi Calm Calm - N/A   Overcast
11:56 PM 53.6 °F - 50.0 °F 88% 29.53 in 8.0 mi Calm Calm - N/A   Overcast