Weather History for Livermore, CA

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Wednesday, August 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 73 °F 72 °F  
Max Temperature 86 °F 87 °F 106 °F (1950)
Min Temperature 59 °F 57 °F 46 °F (1959)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 5 36  
Since 1 July heating degree days 0 4  
Cooling Degree Days 8 7  
Month to date cooling degree days 169 155  
Year to date cooling degree days 737 549  
Since 1 June cooling degree days 636 496  
Growing Degree Days 23 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 58    
Maximum Humidity 84    
Minimum Humidity 32    
Precipitation  
Precipitation 0.00 in 0.00 in 0.03 in (2003)
Month to date precipitation 0.00 0.00  
Year to date precipitation 2.12 9.90  
Since 1 July precipitation 0.00 T  
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 10 mph (WNW)    
Max Wind Speed 21 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 21, 2013 Rise Set
Actual Time 6:28 AM PDT 7:51 PM PDT
Civil Twilight 6:00 AM PDT 8:18 PM PDT
Nautical Twilight 5:27 AM PDT 8:51 PM PDT
Astronomical Twilight 4:53 AM PDT 9:26 PM PDT
Moon 8:06 PM PDT (8/21) 7:12 AM PDT (8/21)
Length of Visible Light 14h 18m
Length of Day
13h 23m
Full, 99% of the Moon is Illuminated
Aug 21
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter
Sep 19
Full

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 62.1 °F - 53.1 °F 72% 29.87 in 10.0 mi WNW 9.2 mph - N/A   Clear
1:53 AM 61.0 °F - 53.1 °F 75% 29.87 in 10.0 mi WNW 6.9 mph - N/A   Clear
2:53 AM 61.0 °F - 54.0 °F 78% 29.87 in 10.0 mi WNW 6.9 mph - N/A   Clear
3:53 AM 60.1 °F - 54.0 °F 80% 29.86 in 10.0 mi WNW 6.9 mph - N/A   Clear
4:53 AM 60.1 °F - 55.0 °F 83% 29.87 in 10.0 mi WNW 8.1 mph - N/A   Clear
5:53 AM 60.1 °F - 55.0 °F 83% 29.88 in 10.0 mi WNW 5.8 mph - N/A   Scattered Clouds
6:02 AM 60.8 °F - 55.4 °F 82% 29.89 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy
6:53 AM 61.0 °F - 55.0 °F 81% 29.90 in 10.0 mi West 9.2 mph - N/A   Overcast
7:53 AM 61.0 °F - 55.0 °F 81% 29.91 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
8:53 AM 63.0 °F - 54.0 °F 72% 29.92 in 10.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
9:53 AM 66.9 °F - 55.0 °F 66% 29.92 in 10.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
10:00 AM 66.2 °F - 55.4 °F 68% 29.93 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
10:53 AM 71.1 °F - 55.0 °F 57% 29.92 in 10.0 mi WNW 8.1 mph - N/A   Clear
11:53 AM 73.0 °F - 54.0 °F 51% 29.91 in 10.0 mi WNW 9.2 mph - N/A   Clear
12:53 PM 78.1 °F - 54.0 °F 43% 29.90 in 10.0 mi NW 8.1 mph - N/A   Clear
1:53 PM 82.0 °F 81.2 °F 53.1 °F 37% 29.87 in 10.0 mi WNW 5.8 mph - N/A   Clear
2:53 PM 84.0 °F 82.5 °F 53.1 °F 34% 29.85 in 10.0 mi West 10.4 mph - N/A   Clear
3:53 PM 86.0 °F 84.2 °F 54.0 °F 33% 29.83 in 10.0 mi WNW 10.4 mph - N/A   Clear
4:53 PM 82.0 °F 81.3 °F 54.0 °F 38% 29.82 in 10.0 mi WNW 15.0 mph - N/A   Clear
5:53 PM 78.1 °F - 54.0 °F 43% 29.82 in 10.0 mi West 19.6 mph - N/A   Clear
6:53 PM 73.0 °F - 54.0 °F 51% 29.84 in 10.0 mi West 17.3 mph 21.9 mph N/A   Clear
7:53 PM 66.9 °F - 54.0 °F 63% 29.86 in 10.0 mi West 16.1 mph - N/A   Clear
8:53 PM 63.0 °F - 54.0 °F 72% 29.89 in 10.0 mi WNW 19.6 mph - N/A   Clear
9:53 PM 62.1 °F - 54.0 °F 75% 29.91 in 10.0 mi WNW 10.4 mph - N/A   Clear
10:53 PM 61.0 °F - 54.0 °F 78% 29.92 in 10.0 mi West 8.1 mph - N/A   Clear
11:53 PM 60.1 °F - 54.0 °F 80% 29.92 in 10.0 mi West 9.2 mph - N/A   Clear