Weather History for Mount Shasta, CA

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Monday, December 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 24 °F 35 °F  
Max Temperature 35 °F 44 °F 64 °F (1914)
Min Temperature 12 °F 26 °F 2 °F (1915)
Degree Days  
Heating Degree Days 41 30  
Month to date heating degree days 989 922  
Since 1 July heating degree days 2019 2322  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 392 288  
Moisture  
Dew Point 17 °F    
Average Humidity 76    
Maximum Humidity 84    
Minimum Humidity 61    
Precipitation  
Precipitation T in 0.25 in 2.65 in (1992)
Month to date precipitation 10.43 7.85  
Year to date precipitation 45.26 43.21  
Sea Level Pressure  
Sea Level Pressure 30.36 in    
Wind  
Wind Speed 2 mph (North)    
Max Wind Speed 12 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 31, 2012 Rise Set
Actual Time 7:35 AM PST 4:50 PM PST
Civil Twilight 7:03 AM PST 5:21 PM PST
Nautical Twilight 6:29 AM PST 5:56 PM PST
Astronomical Twilight 5:55 AM PST 6:29 PM PST
Moon 8:28 PM PST (12/31) 9:17 AM PST (12/31)
Length of Visible Light 10h 17m
Length of Day
9h 15m
Waning Gibbous, 89% of the Moon is Illuminated
Dec 31
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 19.0 °F - 14.0 °F 81% 30.34 in 9.0 mi Calm Calm - N/A   Clear
1:56 AM 18.0 °F - 12.9 °F 81% 30.37 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 21.0 °F 16.2 °F 16.0 °F 81% 30.36 in 10.0 mi Variable 3.5 mph - N/A   Clear
3:56 AM 16.0 °F - 10.9 °F 81% 30.37 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 16.0 °F - 10.9 °F 81% 30.38 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 14.0 °F 8.2 °F 9.0 °F 80% 30.37 in 10.0 mi NE 3.5 mph - N/A   Clear
6:56 AM 12.9 °F 5.2 °F 8.1 °F 81% 30.38 in 9.0 mi NE 4.6 mph - N/A   Clear
7:56 AM 12.9 °F 6.9 °F 8.1 °F 81% 30.42 in 8.0 mi NE 3.5 mph - N/A   Clear
8:56 AM 21.9 °F 14.5 °F 17.1 °F 82% 30.42 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
9:56 AM 27.0 °F 23.0 °F 21.0 °F 78% 30.40 in 10.0 mi Variable 3.5 mph - N/A   Clear
10:56 AM 28.9 °F 23.9 °F 19.9 °F 69% 30.38 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
11:56 AM 33.1 °F - 21.0 °F 61% 30.34 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:56 PM 30.0 °F 25.2 °F 21.0 °F 69% 30.35 in 10.0 mi Variable 4.6 mph 18.4 mph N/A   Overcast
1:56 PM 30.0 °F - 21.0 °F 69% 30.32 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 PM 34.0 °F 31.0 °F 21.9 °F 61% 30.30 in 10.0 mi Variable 3.5 mph - N/A   Overcast
3:56 PM 30.0 °F 26.5 °F 21.0 °F 69% 30.31 in 10.0 mi Variable 3.5 mph - N/A   Partly Cloudy
4:56 PM 27.0 °F 19.5 °F 19.9 °F 75% 30.35 in 10.0 mi Variable 6.9 mph 16.1 mph N/A   Clear
5:56 PM 26.1 °F - 19.9 °F 78% 30.36 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:56 PM 24.1 °F - 19.0 °F 81% 30.37 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:56 PM 25.0 °F 19.3 °F 19.0 °F 78% 30.37 in 10.0 mi Variable 4.6 mph - N/A   Clear
8:56 PM 21.9 °F - 17.1 °F 82% 30.36 in 5.0 mi Calm Calm - N/A   Haze
9:56 PM 25.0 °F - 19.0 °F 78% 30.35 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:56 PM 26.1 °F 21.9 °F 19.9 °F 78% 30.36 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
11:56 PM 26.1 °F 21.9 °F 19.9 °F 78% 30.35 in 9.0 mi NW 3.5 mph - 0.00 in   Mostly Cloudy