Weather History for Livermore, CA

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Thursday, September 13, 2012

  Actual Average Record
Temperature  
Mean Temperature 78 °F 71 °F  
Max Temperature 96 °F 85 °F 109 °F (1971)
Min Temperature 60 °F 56 °F 42 °F (1972)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 July heating degree days 4 7  
Cooling Degree Days 13 6  
Month to date cooling degree days 83 85  
Year to date cooling degree days 780 710  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 46    
Maximum Humidity 68    
Minimum Humidity 23    
Precipitation  
Precipitation 0.00 in 0.01 in 0.32 in (1963)
Month to date precipitation 0.00 0.05  
Year to date precipitation 7.06 9.96  
Since 1 July precipitation 0.00 0.06  
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 5 mph (West)    
Max Wind Speed 18 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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Date:

Astronomy

Sep. 13, 2012 Rise Set
Actual Time 6:47 AM PDT 7:17 PM PDT
Civil Twilight 6:21 AM PDT 7:43 PM PDT
Nautical Twilight 5:50 AM PDT 8:14 PM PDT
Astronomical Twilight 5:18 AM PDT 8:46 PM PDT
Moon 4:15 AM PDT (9/13) 5:41 PM PDT (9/13)
Length of Visible Light 13h 21m
Length of Day
12h 29m
Waning Crescent, 7% of the Moon is Illuminated
Sep 13
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 64.9 °F - 52.0 °F 63% 30.01 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 64.0 °F - 52.0 °F 65% 30.02 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 63.0 °F - 52.0 °F 67% 30.02 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 62.1 °F - 52.0 °F 70% 30.01 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 62.1 °F - 52.0 °F 70% 30.03 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 60.1 °F - 48.9 °F 67% 30.04 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 61.0 °F - 50.0 °F 67% 30.05 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 63.0 °F - 53.1 °F 70% 30.06 in 10.0 mi WNW 3.5 mph - N/A   Clear
8:53 AM 66.0 °F - 55.9 °F 70% 30.06 in 10.0 mi SSW 3.5 mph - N/A   Clear
9:53 AM 71.1 °F - 55.9 °F 59% 30.07 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 77.0 °F - 54.0 °F 45% 30.06 in 10.0 mi West 3.5 mph - N/A   Clear
11:53 AM 82.9 °F - 51.1 °F 33% 30.04 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 88.0 °F - 50.0 °F 27% 30.02 in 10.0 mi Variable 3.5 mph - N/A   Clear
1:53 PM 93.0 °F - 50.0 °F 23% 30.00 in 10.0 mi WSW 3.5 mph - N/A   Clear
2:53 PM 95.0 °F - 51.1 °F 22% 29.97 in 10.0 mi West 6.9 mph - N/A   Clear
3:53 PM 95.0 °F 92.5 °F 53.1 °F 24% 29.96 in 10.0 mi West 9.2 mph - N/A   Clear
5:53 PM 84.0 °F 82.5 °F 53.1 °F 34% 29.97 in 10.0 mi WNW 11.5 mph - N/A   Clear
6:53 PM 79.0 °F - 53.1 °F 40% 29.98 in 10.0 mi WNW 12.7 mph - N/A   Clear
7:53 PM 73.9 °F - 51.1 °F 45% 30.00 in 10.0 mi NW 9.2 mph - N/A   Clear
8:53 PM 72.0 °F - 51.1 °F 48% 30.02 in 10.0 mi NW 5.8 mph - N/A   Clear
9:53 PM 69.1 °F - 51.1 °F 53% 30.03 in 10.0 mi WNW 10.4 mph - N/A   Clear
10:53 PM 66.9 °F - 50.0 °F 54% 30.04 in 10.0 mi NW 5.8 mph - N/A   Clear
11:53 PM 64.0 °F - 51.1 °F 63% 30.04 in 10.0 mi West 8.1 mph - N/A   Clear