Weather History for Alturas, CA

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Monday, December 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 8 °F 29 °F  
Max Temperature 22 °F 40 °F 65 °F (1917)
Min Temperature -6 °F 18 °F -15 °F (1918)
Degree Days  
Heating Degree Days 57 36  
Month to date heating degree days 1137 1099  
Since 1 July heating degree days 2551 2910  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 224 156  
Moisture  
Dew Point 3 °F    
Average Humidity 82    
Maximum Humidity 95    
Minimum Humidity 68    
Precipitation  
Precipitation 0.00 in 0.05 in 0.79 in (1973)
Month to date precipitation 2.68 1.71  
Year to date precipitation 10.30 14.17  
Sea Level Pressure  
Sea Level Pressure 30.40 in    
Wind  
Wind Speed 1 mph (East)    
Max Wind Speed 10 mph    
Max Gust Speed 23 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 7:28 AM PST 4:42 PM PST
Civil Twilight 6:57 AM PST 5:13 PM PST
Nautical Twilight 6:22 AM PST 5:48 PM PST
Astronomical Twilight 5:48 AM PST 6:22 PM PST
Moon 8:21 PM PST (12/31) 9:10 AM PST (12/31)
Length of Visible Light 10h 16m
Length of Day
9h 14m
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
12:55 AM -2.9 °F - -8.0 °F 79% 30.37 in 7.0 mi Calm Calm - N/A   Clear
1:55 AM -4.0 °F -12.4 °F -7.1 °F 87% 30.39 in 10.0 mi WSW 3.5 mph - N/A   Clear
2:55 AM -0.0 °F -7.9 °F -4.0 °F 83% 30.41 in 8.0 mi ENE 3.5 mph - N/A   Clear
3:55 AM -4.0 °F - -8.0 °F 83% 30.44 in 10.0 mi Calm Calm - N/A   Clear
4:23 AM -4.0 °F -12.4 °F -7.6 °F 85% 30.25 in 9.0 mi NW 3.5 mph - N/A   Partly Cloudy
4:55 AM -0.9 °F - -4.0 °F 87% 30.42 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:55 AM 1.9 °F -7.6 °F -0.9 °F 88% 30.39 in 10.0 mi East 4.6 mph - N/A   Clear
6:55 AM -2.9 °F - -7.1 °F 82% 30.44 in 10.0 mi Calm Calm - N/A   Clear
7:55 AM -4.0 °F - -8.0 °F 83% 30.48 in 10.0 mi Calm Calm - N/A   Clear
8:55 AM 3.0 °F - -2.0 °F 80% 30.47 in 10.0 mi Calm Calm - N/A   Clear
9:55 AM 7.0 °F - 3.0 °F 84% 30.46 in 10.0 mi Calm Calm - N/A   Clear
10:55 AM 10.9 °F - 7.0 °F 84% 30.48 in 10.0 mi Calm Calm - N/A   Clear
11:55 AM 16.0 °F 10.4 °F 9.0 °F 74% 30.43 in 10.0 mi SE 3.5 mph - N/A   Scattered Clouds
12:55 PM 18.0 °F - 10.0 °F 71% 30.39 in 10.0 mi Calm Calm - N/A   Overcast
1:55 PM 19.9 °F - 12.0 °F 71% 30.36 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:55 PM 21.0 °F - 12.0 °F 68% 30.32 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:55 PM 21.9 °F 17.2 °F 12.0 °F 66% 30.35 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
4:55 PM 15.1 °F - 9.0 °F 77% 30.38 in 10.0 mi Calm Calm - N/A   Clear
5:55 PM 10.9 °F - 6.1 °F 81% 30.39 in 10.0 mi Calm Calm - N/A   Overcast
7:55 PM 10.9 °F 4.7 °F 7.0 °F 84% 30.42 in 10.0 mi WSW 3.5 mph - N/A   Clear
8:55 PM 15.1 °F 9.4 °F 10.0 °F 80% 30.38 in 10.0 mi East 3.5 mph - N/A   Overcast
9:55 PM 17.1 °F - 12.0 °F 81% 30.36 in 10.0 mi Calm Calm - N/A   Overcast
10:55 PM 16.0 °F - 10.9 °F 81% 30.36 in 10.0 mi Calm Calm - N/A   Overcast
11:55 PM 17.1 °F - 12.9 °F 84% 30.35 in 10.0 mi Calm Calm - N/A   Overcast