Weather History for Livermore, CA

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Tuesday, May 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 62 °F 63 °F  
Max Temperature 72 °F 76 °F 100 °F (2001)
Min Temperature 51 °F 50 °F 38 °F (1964)
Degree Days  
Heating Degree Days 3 4  
Month to date heating degree days 27 96  
Since 1 July heating degree days 2354 2718  
Cooling Degree Days 0 2  
Month to date cooling degree days 62 28  
Year to date cooling degree days 95 37  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 45 °F    
Average Humidity 59    
Maximum Humidity 83    
Minimum Humidity 34    
Precipitation  
Precipitation 0.00 in 0.02 in 0.63 in (1957)
Month to date precipitation 0.11 0.52  
Year to date precipitation 2.07 9.76  
Since 1 July precipitation 10.36 15.57  
Sea Level Pressure  
Sea Level Pressure 29.95 in    
Wind  
Wind Speed 11 mph (WSW)    
Max Wind Speed 24 mph    
Max Gust Speed 28 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 21, 2013 Rise Set
Actual Time 5:52 AM PDT 8:15 PM PDT
Civil Twilight 5:22 AM PDT 8:45 PM PDT
Nautical Twilight 4:46 AM PDT 9:22 PM PDT
Astronomical Twilight 4:05 AM PDT 10:03 PM PDT
Moon 4:38 PM PDT (5/21) 3:19 AM PDT (5/21)
Length of Visible Light 15h 22m
Length of Day
14h 22m
Waxing Gibbous, 85% of the Moon is Illuminated
May 21
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 55.0 °F 46.9 °F 74% 29.93 in 10.0 mi WNW 8.1 mph - N/A   Clear
1:53 AM 54.0 °F 48.0 °F 80% 29.92 in 10.0 mi WNW 6.9 mph - N/A   Clear
2:53 AM 54.0 °F 46.9 °F 77% 29.91 in 10.0 mi WNW 6.9 mph - N/A   Clear
3:53 AM 54.0 °F 46.9 °F 77% 29.92 in 10.0 mi NW 6.9 mph - N/A   Clear
4:53 AM 54.0 °F 46.9 °F 77% 29.92 in 10.0 mi NW 8.1 mph - N/A   Clear
5:53 AM 54.0 °F 46.9 °F 77% 29.94 in 10.0 mi WNW 5.8 mph - N/A   Clear
6:53 AM 55.0 °F 46.9 °F 74% 29.95 in 10.0 mi NW 4.6 mph - N/A   Clear
7:53 AM 57.9 °F 46.0 °F 65% 29.97 in 10.0 mi WSW 6.9 mph - N/A   Unknown
8:53 AM 60.1 °F 46.0 °F 60% 29.97 in 10.0 mi SW 11.5 mph - N/A   Clear
9:53 AM 64.0 °F 48.0 °F 56% 29.97 in 10.0 mi SSW 9.2 mph - N/A   Clear
10:53 AM 66.0 °F 48.0 °F 52% 29.98 in 10.0 mi SSW 17.3 mph 25.3 mph N/A   Clear
11:53 AM 69.1 °F 46.9 °F 45% 29.98 in 10.0 mi WSW 11.5 mph 20.7 mph N/A   Clear
12:53 PM 71.1 °F 45.0 °F 39% 29.96 in 10.0 mi SSW 16.1 mph 21.9 mph N/A   Clear
1:53 PM 71.1 °F 41.0 °F 34% 29.96 in 10.0 mi WSW 17.3 mph 24.2 mph N/A   Clear
2:04 PM 71.6 °F 39.2 °F 31% 29.97 in 10.0 mi WSW 18.4 mph - N/A   Clear
2:53 PM 70.0 °F 43.0 °F 38% 29.96 in 10.0 mi West 20.7 mph - N/A   Clear
3:53 PM 68.0 °F 39.0 °F 35% 29.95 in 10.0 mi West 17.3 mph 24.2 mph N/A   Clear
4:53 PM 66.9 °F 42.1 °F 40% 29.94 in 10.0 mi SW 12.7 mph 19.6 mph N/A   Clear
5:53 PM 63.0 °F 44.1 °F 50% 29.94 in 10.0 mi SW 15.0 mph 20.7 mph N/A   Clear
6:53 PM 60.1 °F 45.0 °F 57% 29.93 in 10.0 mi SW 16.1 mph 23.0 mph N/A   Clear
7:53 PM 57.0 °F 45.0 °F 64% 29.94 in 10.0 mi SW 13.8 mph - N/A   Clear
8:53 PM 55.0 °F 45.0 °F 69% 29.96 in 10.0 mi South 11.5 mph - N/A   Clear
9:53 PM 53.1 °F 45.0 °F 74% 29.96 in 10.0 mi SSW 9.2 mph - N/A   Clear
10:53 PM 53.1 °F 44.1 °F 71% 29.97 in 10.0 mi SSW 9.2 mph - N/A   Clear
11:53 PM 52.0 °F 44.1 °F 74% 29.97 in 10.0 mi SW 9.2 mph - N/A   Clear