Weather History for Livermore, CA

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Thursday, January 19, 2012

  Actual Average Record
Temperature  
Mean Temperature 40 °F 47 °F  
Max Temperature 51 °F 56 °F 70 °F (1971)
Min Temperature 29 °F 37 °F 21 °F (1943)
Degree Days  
Heating Degree Days 25 18  
Month to date heating degree days 333 357  
Since 1 July heating degree days 1343 1388  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 36 °F    
Average Humidity 77    
Maximum Humidity 93    
Minimum Humidity 60    
Precipitation  
Precipitation 0.02 in 0.07 in 0.91 in (1969)
Month to date precipitation 0.02 2.14  
Year to date precipitation 0.02 2.14  
Since 1 July precipitation 1.93 7.95  
Sea Level Pressure  
Sea Level Pressure 30.15 in    
Wind  
Wind Speed 2 mph (ENE)    
Max Wind Speed 8 mph    
Max Gust Speed 9 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jan. 19, 2012 Rise Set
Actual Time 7:19 AM PST 5:16 PM PST
Civil Twilight 6:51 AM PST 5:44 PM PST
Nautical Twilight 6:19 AM PST 6:16 PM PST
Astronomical Twilight 5:48 AM PST 6:48 PM PST
Moon 4:00 AM PST (1/19) 1:54 PM PST (1/19)
Length of Visible Light 10h 53m
Length of Day
9h 56m
Waning Crescent, 15% of the Moon is Illuminated
Jan 19
Waning Crescent
Jan 22
New
Jan 30
First Quarter
Feb 7
Full
Feb 14
Last Quarter

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 34.0 °F - 28.0 °F 79% 30.26 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 33.1 °F - 28.0 °F 82% 30.25 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 32.0 °F 28.7 °F 28.0 °F 85% 30.24 in 10.0 mi East 3.5 mph - N/A   Clear
3:53 AM 33.1 °F - 28.0 °F 82% 30.24 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 32.0 °F 28.7 °F 28.0 °F 85% 30.22 in 10.0 mi ENE 3.5 mph - N/A   Clear
5:53 AM 33.1 °F - 28.9 °F 85% 30.22 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 32.0 °F - 27.0 °F 82% 30.22 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 37.0 °F - 30.9 °F 79% 30.22 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 42.1 °F - 32.0 °F 67% 30.24 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 45.0 °F - 32.0 °F 60% 30.21 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 45.0 °F 43.5 °F 33.1 °F 63% 30.15 in 10.0 mi NE 3.5 mph - N/A   Mostly Cloudy
1:53 PM 46.9 °F - 34.0 °F 61% 30.13 in 10.0 mi Calm Calm - N/A   Overcast
2:53 PM 48.9 °F - 36.0 °F 61% 30.11 in 10.0 mi NW 3.5 mph - N/A   Overcast
3:53 PM 48.9 °F - 41.0 °F 74% 30.09 in 10.0 mi Calm Calm - 0.01 in Rain Light Rain
4:53 PM 50.0 °F - 42.1 °F 74% 30.09 in 10.0 mi WSW 8.1 mph - 0.01 in Rain Light Rain
6:53 PM 46.9 °F - 42.1 °F 83% 30.09 in 10.0 mi East 4.6 mph - 0.00 in   Overcast
7:13 PM 46.4 °F - 41.0 °F 81% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
7:53 PM 46.9 °F - 41.0 °F 80% 30.09 in 10.0 mi NE 5.8 mph - N/A   Overcast
8:53 PM 46.9 °F - 42.1 °F 83% 30.08 in 10.0 mi ENE 3.5 mph - N/A   Overcast
9:06 PM 48.2 °F - 42.8 °F 82% 30.07 in 10.0 mi NE 5.8 mph - N/A   Overcast
9:29 PM 46.4 °F - 42.8 °F 87% 30.07 in 10.0 mi Calm Calm - N/A   Overcast
9:53 PM 46.9 °F - 42.1 °F 83% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
10:39 PM 46.4 °F 44.3 °F 42.8 °F 87% 30.07 in 10.0 mi East 4.6 mph - N/A   Overcast
10:53 PM 46.9 °F - 44.1 °F 90% 30.07 in 10.0 mi East 3.5 mph - N/A   Overcast
11:53 PM 48.0 °F - 45.0 °F 89% 30.06 in 10.0 mi Calm Calm - N/A   Overcast