Weather History for Livermore, CA

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Monday, December 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 0 °F 46 °F  
Max Temperature 73 °F 56 °F 69 °F (1996)
Min Temperature 31 °F 37 °F 20 °F (1978)
Degree Days  
Heating Degree Days 49 19  
Month to date heating degree days 537 561  
Since 1 July heating degree days 896 1031  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 957 830  
Growing Degree Days 3 (Base 50)    
Moisture  
Dew Point 29 °F    
Average Humidity 54    
Maximum Humidity 89    
Minimum Humidity 18    
Precipitation  
Precipitation 0.00 in 0.09 in 1.91 in (2005)
Month to date precipitation 4.29 2.68  
Year to date precipitation 15.35 15.71  
Since 1 July precipitation 8.29 5.81  
Sea Level Pressure  
Sea Level Pressure 30.25 in    
Wind  
Wind Speed 3 mph (NW)    
Max Wind Speed 8 mph    
Max Gust Speed 10 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 31, 2012 Rise Set
Actual Time 7:22 AM PST 4:58 PM PST
Civil Twilight 6:53 AM PST 5:28 PM PST
Nautical Twilight 6:20 AM PST 6:00 PM PST
Astronomical Twilight 5:48 AM PST 6:32 PM PST
Moon 8:30 PM PST (12/31) 9:10 AM PST (12/31)
Length of Visible Light 10h 35m
Length of Day
9h 36m
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
12:53 AM 35.1 °F - 30.0 °F 82% 30.19 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 34.0 °F - 28.9 °F 82% 30.22 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 34.0 °F 31.0 °F 30.0 °F 85% 30.23 in 10.0 mi ENE 3.5 mph - N/A   Clear
3:53 AM 33.1 °F 30.0 °F 28.0 °F 82% 30.24 in 10.0 mi North 3.5 mph - N/A   Clear
4:53 AM 48.9 °F - 28.0 °F 44% 30.23 in 10.0 mi Variable 4.6 mph - N/A   Clear
5:53 AM 50.0 °F - 27.0 °F 41% 30.22 in 10.0 mi WSW 6.9 mph - N/A   Clear
6:53 AM 46.9 °F - 27.0 °F 46% 30.25 in 10.0 mi ENE 5.8 mph - N/A   Clear
7:53 AM 37.9 °F 35.5 °F 28.0 °F 68% 30.27 in 10.0 mi WNW 3.5 mph - N/A   Clear
8:53 AM 51.1 °F - 30.0 °F 44% 30.29 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 64.0 °F - 30.9 °F 29% 30.30 in 10.0 mi ESE 4.6 mph - N/A   Clear
10:53 AM 61.0 °F - 25.0 °F 25% 30.29 in 10.0 mi ESE 3.5 mph - N/A   Clear
11:53 AM 59.0 °F - 28.9 °F 32% 30.28 in 10.0 mi Variable 3.5 mph - N/A   Clear
12:53 PM 61.0 °F - 28.0 °F 29% 30.25 in 10.0 mi West 4.6 mph - N/A   Clear
1:53 PM 61.0 °F - 27.0 °F 27% 30.23 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 73.9 °F - 28.0 °F 18% 30.24 in 10.0 mi West 4.6 mph - N/A   Clear
3:53 PM 70.0 °F - 25.0 °F 18% 30.23 in 10.0 mi West 4.6 mph - N/A   Clear
4:53 PM 53.1 °F - 30.0 °F 41% 30.23 in 10.0 mi Calm Calm - N/A   Clear
5:53 PM 50.0 °F - 30.9 °F 48% 30.25 in 10.0 mi WNW 3.5 mph - N/A   Clear
6:53 PM 53.1 °F - 34.0 °F 48% 30.25 in 10.0 mi Calm Calm - N/A   Clear
7:53 PM 52.0 °F - 32.0 °F 47% 30.27 in 10.0 mi North 3.5 mph - N/A   Clear
8:53 PM 46.9 °F - 32.0 °F 56% 30.26 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:53 PM 53.1 °F - 32.0 °F 45% 30.26 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:53 PM 48.9 °F - 30.0 °F 48% 30.25 in 10.0 mi Calm Calm - N/A   Clear