Weather History for Petersburg, AK

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Tuesday, December 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 24 °F -  
Max Temperature 32 °F 34 °F 50 °F (1985)
Min Temperature 17 °F 27 °F 8 °F (1990)
Degree Days  
Heating Degree Days 40    
Moisture  
Dew Point 18 °F    
Average Humidity 80    
Maximum Humidity 93    
Minimum Humidity 55    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.55 in    
Wind  
Wind Speed 2 mph (SW)    
Max Wind Speed 8 mph    
Max Gust Speed -    
Visibility 10 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

Dec. 18, 2012 Rise Set
Actual Time 8:25 AM AKST 3:11 PM AKST
Civil Twilight 7:36 AM AKST 4:00 PM AKST
Nautical Twilight 6:46 AM AKST 4:51 PM AKST
Astronomical Twilight 5:59 AM AKST 5:38 PM AKST
Moon 11:01 AM AKST 11:00 PM AKST
Length of Visible Light 8h 24m
Length of Day
6h 45m
Waxing Crescent, 36% of the Moon is Illuminated
Dec 18
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (AKST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:16 AM 24.8 °F 20.5 °F 21.2 °F 86% 29.68 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
12:36 AM 24.8 °F 20.5 °F 21.2 °F 86% 29.69 in 10.0 mi SSW 3.5 mph - N/A   Overcast
12:56 AM 24.8 °F 20.5 °F 21.2 °F 86% 29.69 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
1:16 AM 23.0 °F 18.4 °F 21.2 °F 93% 29.69 in 10.0 mi SW 3.5 mph - N/A   Overcast
1:36 AM 24.8 °F 20.5 °F 21.2 °F 86% 29.69 in 10.0 mi SSW 3.5 mph - N/A   Overcast
1:56 AM 23.0 °F 18.4 °F 21.2 °F 93% 29.70 in 10.0 mi SW 3.5 mph - N/A   Overcast
2:16 AM 23.0 °F 18.4 °F 19.4 °F 86% 29.70 in 10.0 mi WSW 3.5 mph - N/A   Overcast
2:36 AM 23.0 °F - 19.4 °F 86% 29.70 in 10.0 mi Calm Calm - N/A   Overcast
3:16 AM 23.0 °F 18.4 °F 19.4 °F 86% 29.70 in 10.0 mi WSW 3.5 mph - N/A   Overcast
3:36 AM 21.2 °F 14.9 °F 17.6 °F 86% 29.70 in 10.0 mi WSW 4.6 mph - N/A   Overcast
3:56 AM 21.2 °F - 19.4 °F 93% 29.70 in 10.0 mi Calm Calm - N/A   Overcast
4:16 AM 21.2 °F 16.4 °F 19.4 °F 93% 29.70 in 10.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
4:36 AM 23.0 °F - 19.4 °F 86% 29.70 in 10.0 mi Calm Calm - N/A   Overcast
4:56 AM 21.2 °F - 19.4 °F 93% 29.70 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:16 AM 21.2 °F - 19.4 °F 93% 29.70 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:36 AM 21.2 °F - 19.4 °F 93% 29.69 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 AM 21.2 °F - 19.4 °F 93% 29.69 in 2.0 mi Calm Calm - N/A   Scattered Clouds
6:16 AM 21.2 °F - 19.4 °F 93% 29.68 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:36 AM 19.4 °F 14.3 °F 17.6 °F 93% 29.68 in 10.0 mi WSW 3.5 mph - N/A   Partly Cloudy
6:56 AM 19.4 °F - 17.6 °F 93% 29.68 in 10.0 mi Calm Calm - N/A   Clear
7:16 AM 19.4 °F - 17.6 °F 93% 29.67 in 10.0 mi Calm Calm - N/A   Clear
7:36 AM 19.4 °F - 17.6 °F 93% 29.67 in 10.0 mi Calm Calm - N/A   Clear
7:56 AM 19.4 °F - 17.6 °F 93% 29.67 in 10.0 mi Calm Calm - N/A   Clear
8:16 AM 17.6 °F - 15.8 °F 93% 29.67 in 10.0 mi Calm Calm - N/A   Clear
8:36 AM 19.4 °F - 17.6 °F 93% 29.66 in 10.0 mi Calm Calm - N/A   Clear
8:56 AM 19.4 °F - 17.6 °F 93% 29.66 in 10.0 mi Calm Calm - N/A   Clear
9:16 AM 19.4 °F - 17.6 °F 93% 29.66 in 10.0 mi Calm Calm - N/A   Clear
9:36 AM 17.6 °F - 15.8 °F 93% 29.65 in 10.0 mi Calm Calm - N/A   Clear
9:56 AM 21.2 °F 16.4 °F 17.6 °F 86% 29.65 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
10:16 AM 21.2 °F - 19.4 °F 93% 29.64 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:36 AM 19.4 °F - 15.8 °F 86% 29.64 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:56 AM - - - N/A% 29.63 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:16 AM 19.4 °F - 17.6 °F 93% 29.62 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:36 AM 19.4 °F 14.3 °F 17.6 °F 93% 29.61 in 10.0 mi SSE 3.5 mph - N/A   Partly Cloudy
12:16 PM 21.2 °F 16.4 °F 17.6 °F 86% 29.59 in 10.0 mi SSW 3.5 mph - N/A   Partly Cloudy
12:36 PM 21.2 °F 16.4 °F 17.6 °F 86% 29.59 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
12:56 PM 19.4 °F 14.3 °F 15.8 °F 86% 29.59 in 10.0 mi SW 3.5 mph - N/A   Scattered Clouds
1:16 PM 21.2 °F 16.4 °F 15.8 °F 80% 29.57 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
1:36 PM 24.8 °F - 19.4 °F 80% 29.56 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:56 PM 23.0 °F - 17.6 °F 80% 29.55 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:16 PM 23.0 °F - 19.4 °F 86% 29.54 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:36 PM 24.8 °F - 19.4 °F 80% 29.53 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 PM 24.8 °F - 17.6 °F 74% 29.52 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:16 PM 23.0 °F - 15.8 °F 74% 29.51 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:36 PM 24.8 °F 16.9 °F 17.6 °F 74% 29.50 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy
3:56 PM 26.6 °F 22.6 °F 19.4 °F 74% 29.49 in 10.0 mi WNW 3.5 mph - N/A   Mostly Cloudy
4:16 PM 24.8 °F - 19.4 °F 80% 29.48 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:36 PM 26.6 °F 22.6 °F 19.4 °F 74% 29.47 in 10.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
4:56 PM 28.4 °F - 17.6 °F 64% 29.46 in 10.0 mi Calm Calm - N/A   Overcast
5:16 PM 26.6 °F 22.6 °F 17.6 °F 69% 29.45 in 10.0 mi SW 3.5 mph - N/A   Overcast
5:36 PM 28.4 °F - 17.6 °F 64% 29.44 in 10.0 mi Calm Calm - N/A   Overcast
5:56 PM 28.4 °F 23.3 °F 19.4 °F 69% 29.43 in 10.0 mi WSW 4.6 mph - N/A   Overcast
6:16 PM 26.6 °F - 19.4 °F 74% 29.43 in 10.0 mi Calm Calm - N/A   Overcast
6:36 PM 28.4 °F 23.3 °F 17.6 °F 64% 29.42 in 10.0 mi West 4.6 mph - N/A   Overcast
6:56 PM 30.2 °F 25.4 °F 17.6 °F 60% 29.42 in 10.0 mi SW 4.6 mph - N/A   Overcast
7:16 PM 30.2 °F - 17.6 °F 60% 29.41 in 10.0 mi Calm Calm - N/A   Overcast
7:36 PM 30.2 °F 26.7 °F 15.8 °F 55% 29.40 in 10.0 mi NNE 3.5 mph - N/A   Overcast
7:56 PM 28.4 °F 23.3 °F 17.6 °F 64% 29.39 in 10.0 mi NE 4.6 mph - N/A   Overcast
8:16 PM 28.4 °F - 15.8 °F 59% 29.38 in 10.0 mi Calm Calm - N/A   Overcast
8:36 PM 28.4 °F 23.3 °F 17.6 °F 64% 29.37 in 10.0 mi SW 4.6 mph - N/A   Overcast
8:56 PM 30.2 °F - 19.4 °F 64% 29.36 in 10.0 mi Calm Calm - N/A   Overcast
9:16 PM 28.4 °F 23.3 °F 17.6 °F 64% 29.35 in 10.0 mi West 4.6 mph - N/A   Overcast
9:36 PM 28.4 °F 22.2 °F 19.4 °F 69% 29.34 in 10.0 mi South 5.8 mph - N/A   Overcast
9:56 PM 28.4 °F - 19.4 °F 69% 29.33 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:16 PM 28.4 °F - 19.4 °F 69% 29.33 in 10.0 mi Calm Calm - N/A   Overcast
10:36 PM 32.0 °F 25.6 °F 19.4 °F 60% 29.31 in 10.0 mi ESE 6.9 mph - N/A   Overcast
10:56 PM 32.0 °F 25.6 °F 17.6 °F 55% 29.30 in 10.0 mi SE 6.9 mph - N/A   Overcast
11:16 PM 32.0 °F 24.8 °F 17.6 °F 55% 29.29 in 10.0 mi SE 8.1 mph - N/A   Overcast
11:36 PM 32.0 °F 25.6 °F 17.6 °F 55% 29.29 in 10.0 mi ESE 6.9 mph - N/A   Overcast
11:56 PM 32.0 °F 24.8 °F 17.6 °F 55% 29.27 in 10.0 mi ESE 8.1 mph - N/A   Overcast