Weather History for Petersburg, AK

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Thursday, September 18, 2014

  Actual Average Record
Temperature  
Mean Temperature 55 °F -  
Max Temperature 57 °F 52 °F 63 °F (1986)
Min Temperature 53 °F 43 °F 33 °F (1983)
Degree Days  
Heating Degree Days 10    
Growing Degree Days 5 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 83    
Maximum Humidity 94    
Minimum Humidity 77    
Precipitation  
Precipitation 0.23 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.40 in    
Wind  
Wind Speed 4 mph (ESE)    
Max Wind Speed 14 mph    
Max Gust Speed 24 mph    
Visibility 9 miles    
Events 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

Sep. 18, 2014 Rise Set
Actual Time 6:29 AM AKDT 7:01 PM AKDT
Civil Twilight 5:50 AM AKDT 7:39 PM AKDT
Nautical Twilight 5:04 AM AKDT 8:25 PM AKDT
Astronomical Twilight 4:14 AM AKDT 9:14 PM AKDT
Moon 12:41 AM AKDT (9/18) 4:38 PM AKDT (9/18)
Length of Visible Light 13h 48m
Length of Day
12h 32m
Waning Crescent, 25% of the Moon is Illuminated
Sep 18
Waning Crescent
Sep 23
New
Oct 1
First Quarter
Oct 8
Full
Oct 15
Last Quarter

Hourly Weather History & Observations

Time (AKDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:16 AM 53.6 °F 51.8 °F 94% 29.57 in 10.0 mi NW 4.6 mph - N/A   Overcast
12:36 AM 53.6 °F 51.8 °F 94% 29.56 in 10.0 mi Calm Calm - N/A   Overcast
1:16 AM 53.6 °F 51.8 °F 94% 29.55 in 9.0 mi Calm Calm - N/A   Overcast
1:36 AM 53.6 °F 50.0 °F 88% 29.55 in 10.0 mi SSW 3.5 mph - N/A   Mostly Cloudy
1:56 AM 53.6 °F 51.8 °F 94% 29.54 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:16 AM 53.6 °F 51.8 °F 94% 29.54 in 10.0 mi Calm Calm - N/A   Overcast
2:36 AM 53.6 °F 50.0 °F 88% 29.53 in 10.0 mi Calm Calm - N/A   Overcast
2:56 AM 53.6 °F 50.0 °F 88% 29.53 in 10.0 mi South 3.5 mph - N/A   Overcast
3:16 AM 53.6 °F 50.0 °F 88% 29.51 in 10.0 mi Calm Calm - N/A   Overcast
3:36 AM 53.6 °F 50.0 °F 88% 29.51 in 10.0 mi Calm Calm - N/A   Overcast
3:56 AM 53.6 °F 50.0 °F 88% 29.49 in 10.0 mi WNW 4.6 mph - N/A   Overcast
4:36 AM 53.6 °F 50.0 °F 88% 29.47 in 10.0 mi WSW 3.5 mph - N/A   Overcast
5:56 AM 55.4 °F 48.2 °F 77% 29.44 in 10.0 mi ESE 5.8 mph - N/A   Overcast
6:36 AM 55.4 °F 48.2 °F 77% 29.43 in 10.0 mi NNW 3.5 mph - N/A   Overcast
6:56 AM 53.6 °F 48.2 °F 82% 29.42 in 10.0 mi Calm Calm - N/A   Overcast
7:16 AM 53.6 °F 48.2 °F 82% 29.42 in 10.0 mi Calm Calm - N/A   Overcast
7:36 AM 55.4 °F 48.2 °F 77% 29.41 in 10.0 mi NNE 3.5 mph - N/A   Overcast
7:56 AM 53.6 °F 48.2 °F 82% 29.40 in 10.0 mi SSE 4.6 mph - 0.02 in   Overcast
8:16 AM 53.6 °F 50.0 °F 88% 29.40 in 10.0 mi Calm Calm - N/A   Overcast
8:36 AM 53.6 °F 48.2 °F 82% 29.39 in 10.0 mi ESE 5.8 mph - 0.02 in   Overcast
8:56 AM 55.4 °F 50.0 °F 82% 29.39 in 10.0 mi East 8.1 mph - 0.03 in   Overcast
9:16 AM 55.4 °F 48.2 °F 77% 29.39 in 10.0 mi ESE 8.1 mph 17.3 mph 0.03 in   Overcast
9:36 AM 55.4 °F 48.2 °F 77% 29.38 in 10.0 mi ESE 8.1 mph 16.1 mph 0.03 in   Overcast
9:56 AM 55.4 °F 48.2 °F 77% 29.37 in 10.0 mi ESE 10.4 mph 17.3 mph 0.04 in   Overcast
10:16 AM 55.4 °F 50.0 °F 82% 29.36 in 10.0 mi ESE 9.2 mph - 0.01 in   Overcast
10:36 AM 55.4 °F 48.2 °F 77% 29.35 in 10.0 mi ESE 11.5 mph 16.1 mph 0.02 in   Overcast
10:56 AM 55.4 °F 50.0 °F 82% 29.34 in 10.0 mi East 13.8 mph - N/A Rain Light Rain
11:56 AM 55.4 °F 48.2 °F 77% 29.33 in 7.0 mi ENE 12.7 mph - N/A Rain Light Rain
12:36 PM 55.4 °F 50.0 °F 82% 29.31 in 7.0 mi ESE 9.2 mph 16.1 mph N/A   Overcast
12:56 PM 55.4 °F 50.0 °F 82% 29.32 in 7.0 mi ESE 11.5 mph 17.3 mph N/A   Overcast
1:16 PM 55.4 °F 48.2 °F 77% 29.30 in 7.0 mi East 12.7 mph 19.6 mph N/A   Overcast
1:56 PM 55.4 °F 50.0 °F 82% 29.28 in 5.0 mi ENE 13.8 mph - N/A Rain Light Rain
2:56 PM 57.2 °F 50.0 °F 77% 29.26 in 10.0 mi East 11.5 mph - N/A Rain Light Rain
3:36 PM 57.2 °F 50.0 °F 77% 29.26 in 3.0 mi ESE 3.5 mph - N/A   Overcast
3:56 PM 57.2 °F 50.0 °F 77% 29.25 in 3.0 mi SE 11.5 mph 18.4 mph N/A   Overcast
4:16 PM 57.2 °F 51.8 °F 82% 29.26 in 3.0 mi ESE 9.2 mph 24.2 mph N/A   Overcast
4:56 PM 55.4 °F 51.8 °F 88% 29.26 in 4.0 mi WNW 6.9 mph - N/A Rain Light Rain
5:56 PM 55.4 °F 51.8 °F 88% 29.25 in 10.0 mi Calm Calm - N/A   Overcast
6:56 PM 55.4 °F 48.2 °F 77% 29.30 in 10.0 mi South 6.9 mph 23.0 mph 0.12 in   Overcast
7:56 PM 53.6 °F 50.0 °F 88% 29.34 in 10.0 mi East 6.9 mph - N/A Rain Light Rain
8:56 PM 53.6 °F 48.2 °F 82% 29.37 in 7.0 mi SSW 5.8 mph - N/A   Overcast
9:16 PM 55.4 °F 48.2 °F 77% 29.38 in 7.0 mi Calm Calm - N/A   Overcast
9:56 PM 55.4 °F 48.2 °F 77% 29.39 in 7.0 mi ESE 11.5 mph - N/A Rain Light Rain
10:56 PM 53.6 °F 48.2 °F 82% 29.41 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy