Weather History for Livermore, CA

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Sunday, September 30, 2012

  Actual Average Record
Temperature  
Mean Temperature 78 °F 67 °F  
Max Temperature 100 °F 81 °F 100 °F (2012)
Min Temperature 56 °F 53 °F 35 °F (1950)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 1 13  
Since 1 July heating degree days 5 24  
Cooling Degree Days 13 3  
Month to date cooling degree days 180 164  
Year to date cooling degree days 877 789  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 46 °F    
Average Humidity 40    
Maximum Humidity 67    
Minimum Humidity 13    
Precipitation  
Precipitation 0.00 in 0.03 in 1.02 in (1983)
Month to date precipitation 0.00 0.22  
Year to date precipitation 7.06 10.13  
Since 1 July precipitation 0.00 0.23  
Sea Level Pressure  
Sea Level Pressure 29.99 in    
Wind  
Wind Speed 2 mph (West)    
Max Wind Speed 12 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 30, 2012 Rise Set
Actual Time 7:02 AM PDT 6:50 PM PDT
Civil Twilight 6:36 AM PDT 7:17 PM PDT
Nautical Twilight 6:05 AM PDT 7:47 PM PDT
Astronomical Twilight 5:35 AM PDT 8:17 PM PDT
Moon 6:59 PM PDT (9/30) 7:36 AM PDT (9/30)
Length of Visible Light 12h 40m
Length of Day
11h 48m
Full, 100% of the Moon is Illuminated
Sep 30
Full
Oct 8
Last Quarter
Oct 15
New
Oct 21
First Quarter
Oct 29
Full

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 64.0 °F 48.9 °F 58% 30.01 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 63.0 °F 48.0 °F 58% 30.02 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 61.0 °F 48.0 °F 62% 30.01 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 59.0 °F 46.9 °F 64% 30.02 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 59.0 °F 46.0 °F 62% 30.02 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 57.9 °F 46.0 °F 65% 30.02 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 57.0 °F 45.0 °F 64% 30.04 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 60.1 °F 46.0 °F 60% 30.04 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 64.9 °F 48.0 °F 54% 30.05 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 70.0 °F 48.9 °F 47% 30.05 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 80.1 °F 45.0 °F 29% 30.05 in 10.0 mi SSW 3.5 mph - N/A   Clear
11:53 AM 87.1 °F 44.1 °F 22% 30.03 in 10.0 mi Variable 3.5 mph - N/A   Clear
1:53 PM 95.0 °F 43.0 °F 17% 29.99 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 96.1 °F 44.1 °F 17% 29.96 in 10.0 mi Variable 3.5 mph - N/A   Clear
3:53 PM 97.0 °F 45.0 °F 17% 29.95 in 10.0 mi South 5.8 mph - N/A   Clear
4:53 PM 99.0 °F 39.9 °F 13% 29.93 in 10.0 mi WNW 9.2 mph - N/A   Clear
5:53 PM 93.9 °F 46.9 °F 20% 29.93 in 10.0 mi West 9.2 mph - N/A   Clear
6:53 PM 86.0 °F 45.0 °F 24% 29.94 in 10.0 mi West 6.9 mph - N/A   Clear
7:53 PM 82.9 °F 46.9 °F 28% 29.95 in 10.0 mi NW 3.5 mph - N/A   Clear
8:53 PM 79.0 °F 45.0 °F 30% 29.96 in 10.0 mi Calm Calm - N/A   Clear
9:53 PM 75.0 °F 46.9 °F 37% 29.97 in 10.0 mi Calm Calm - N/A   Clear
10:53 PM 72.0 °F 45.0 °F 38% 29.97 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 68.0 °F 43.0 °F 40% 29.97 in 10.0 mi ENE 3.5 mph - N/A   Clear