Weather History for Livermore, CA

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Thursday, February 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 48 °F 52 °F  
Max Temperature 60 °F 62 °F 73 °F (1982)
Min Temperature 35 °F 41 °F 27 °F (1955)
Degree Days  
Heating Degree Days 17 13  
Month to date heating degree days 350 319  
Since 1 July heating degree days 1839 1917  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 35 °F    
Average Humidity 65    
Maximum Humidity 100    
Minimum Humidity 29    
Precipitation  
Precipitation 0.00 in 0.13 in 0.85 in (1959)
Month to date precipitation 0.41 2.21  
Year to date precipitation 1.12 5.22  
Since 1 July precipitation 9.41 11.03  
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 3 mph (NNW)    
Max Wind Speed 14 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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Astronomy

Feb. 21, 2013 Rise Set
Actual Time 6:48 AM PST 5:53 PM PST
Civil Twilight 6:22 AM PST 6:19 PM PST
Nautical Twilight 5:51 AM PST 6:50 PM PST
Astronomical Twilight 5:21 AM PST 7:20 PM PST
Moon 2:15 PM PST (2/21) 3:54 AM PST (2/21)
Length of Visible Light 11h 57m
Length of Day
11h 04m
Waxing Gibbous, 84% of the Moon is Illuminated
Feb 21
Waxing Gibbous
Feb 25
Full
Mar 4
Last Quarter
Mar 11
New
Mar 19
First 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 37.9 °F - 36.0 °F 93% 30.06 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 39.0 °F - 37.0 °F 93% 30.07 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 37.0 °F - 35.1 °F 93% 30.05 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:53 AM 39.0 °F - 37.0 °F 93% 30.05 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 39.0 °F - 37.0 °F 93% 30.07 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 37.0 °F - 37.0 °F 100% 30.08 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
6:53 AM 36.0 °F - 34.0 °F 93% 30.09 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 39.0 °F - 36.0 °F 89% 30.11 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 44.1 °F 41.5 °F 37.9 °F 79% 30.13 in 10.0 mi SSE 4.6 mph - N/A   Clear
9:53 AM 48.9 °F - 34.0 °F 56% 30.14 in 10.0 mi WNW 5.8 mph - N/A   Clear
10:53 AM 53.1 °F - 34.0 °F 48% 30.16 in 10.0 mi North 5.8 mph 19.6 mph N/A   Partly Cloudy
11:53 AM 54.0 °F - 34.0 °F 47% 30.14 in 10.0 mi NNW 8.1 mph - N/A   Clear
12:53 PM 55.0 °F - 32.0 °F 42% 30.13 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:53 PM 57.0 °F - 30.9 °F 37% 30.11 in 10.0 mi North 3.5 mph - N/A   Clear
2:53 PM 59.0 °F - 28.9 °F 32% 30.10 in 10.0 mi Variable 4.6 mph - N/A   Clear
3:53 PM 60.1 °F - 28.0 °F 30% 30.09 in 10.0 mi NNW 8.1 mph - N/A   Clear
4:53 PM 57.0 °F - 37.0 °F 47% 30.10 in 10.0 mi WSW 9.2 mph - N/A   Clear
5:53 PM 51.1 °F - 37.0 °F 59% 30.11 in 10.0 mi West 5.8 mph - N/A   Clear
6:53 PM 51.1 °F - 37.0 °F 59% 30.13 in 10.0 mi Calm Calm - N/A   Clear
7:53 PM 48.0 °F - 37.9 °F 68% 30.15 in 10.0 mi Calm Calm - N/A   Clear
8:53 PM 46.0 °F 43.9 °F 37.9 °F 73% 30.15 in 10.0 mi NE 4.6 mph - N/A   Clear
9:53 PM 41.0 °F 38.0 °F 36.0 °F 82% 30.17 in 10.0 mi East 4.6 mph - N/A   Clear
10:53 PM 39.9 °F - 35.1 °F 83% 30.17 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 39.9 °F - 35.1 °F 83% 30.17 in 10.0 mi Calm Calm - N/A   Clear