Weather History for Napa County, CA

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Sunday, August 11, 2013

  Actual Average Record
Temperature  
Mean Temperature 64 °F 66 °F  
Max Temperature 75 °F 79 °F 92 °F (1998)
Min Temperature 53 °F 52 °F 45 °F (2005)
Degree Days  
Heating Degree Days 1    
Month to date heating degree days 15  
Since 1 June heating degree days 65  
Since 1 July heating degree days 35  
Cooling Degree Days 0    
Month to date cooling degree days 2  
Year to date cooling degree days 150  
Since 1 June cooling degree days 130  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 75    
Maximum Humidity 93    
Minimum Humidity 57    
Precipitation  
Precipitation 0.00 in - 0.84 in (1965)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 8 mph (WSW)    
Max Wind Speed 20 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 11, 2013 Rise Set
Actual Time 6:20 AM PDT 8:07 PM PDT
Civil Twilight 5:52 AM PDT 8:35 PM PDT
Nautical Twilight 5:17 AM PDT 9:09 PM PDT
Astronomical Twilight 4:40 AM PDT 9:46 PM PDT
Moon 11:08 AM PDT (8/11) 10:31 PM PDT (8/11)
Length of Visible Light 14h 43m
Length of Day
13h 46m
Waxing Crescent, 23% of the Moon is Illuminated
Aug 11
Waxing Crescent
Aug 14
First Quarter
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:23 AM 55.4 °F 53.6 °F 94% 30.02 in 10.0 mi West 3.5 mph - N/A   Mostly Cloudy
12:35 AM 55.4 °F 53.6 °F 94% 30.02 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
12:51 AM 55.4 °F 53.6 °F 94% 30.02 in 10.0 mi West 6.9 mph - N/A   Scattered Clouds
12:54 AM 55.9 °F 54.0 °F 93% 29.99 in 10.0 mi West 6.9 mph - N/A   Scattered Clouds
1:08 AM 55.4 °F 53.6 °F 94% 30.02 in 10.0 mi WSW 3.5 mph - N/A   Scattered Clouds
1:16 AM 55.4 °F 53.6 °F 94% 30.02 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
1:36 AM 55.4 °F 53.6 °F 94% 30.01 in 10.0 mi West 4.6 mph - N/A   Overcast
1:54 AM 55.9 °F 54.0 °F 93% 29.99 in 10.0 mi WNW 4.6 mph - N/A   Overcast
2:47 AM 57.2 °F 55.4 °F 94% 30.01 in 10.0 mi West 5.8 mph - N/A   Overcast
2:54 AM 57.0 °F 55.0 °F 93% 29.99 in 10.0 mi West 4.6 mph - N/A   Overcast
3:54 AM 55.9 °F 54.0 °F 93% 29.98 in 10.0 mi WNW 10.4 mph - N/A   Overcast
4:54 AM 55.9 °F 54.0 °F 93% 29.98 in 10.0 mi West 6.9 mph - N/A   Overcast
5:54 AM 55.9 °F 54.0 °F 93% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
6:54 AM 55.9 °F 53.1 °F 90% 30.00 in 10.0 mi WSW 5.8 mph - N/A   Overcast
7:54 AM 55.9 °F 53.1 °F 90% 30.00 in 10.0 mi West 5.8 mph - N/A   Overcast
8:54 AM 55.9 °F 53.1 °F 90% 30.01 in 10.0 mi SW 4.6 mph - N/A   Overcast
9:16 AM 57.2 °F 53.6 °F 88% 30.03 in 10.0 mi SW 4.6 mph - N/A   Overcast
9:54 AM 59.0 °F 53.1 °F 81% 30.01 in 10.0 mi Variable 4.6 mph - N/A   Overcast
10:24 AM 60.8 °F 53.6 °F 77% 30.03 in 10.0 mi WSW 5.8 mph - N/A   Mostly Cloudy
10:54 AM 64.0 °F 54.0 °F 70% 30.00 in 10.0 mi Variable 5.8 mph - N/A   Overcast
11:17 AM 64.4 °F 53.6 °F 68% 30.02 in 10.0 mi South 8.1 mph - N/A   Scattered Clouds
11:54 AM 66.9 °F 55.0 °F 66% 29.99 in 10.0 mi Variable 6.9 mph - N/A   Clear
12:54 PM 70.0 °F 55.9 °F 61% 29.97 in 10.0 mi SSW 9.2 mph - N/A   Clear
1:54 PM 72.0 °F 55.9 °F 57% 29.96 in 10.0 mi SSW 9.2 mph - N/A   Clear
2:54 PM 73.9 °F 57.0 °F 55% 29.94 in 10.0 mi SSW 10.4 mph - N/A   Clear
3:54 PM 73.0 °F 57.0 °F 57% 29.93 in 10.0 mi South 13.8 mph - N/A   Clear
4:54 PM 73.0 °F 57.0 °F 57% 29.91 in 10.0 mi SSW 18.4 mph - N/A   Clear
5:54 PM 72.0 °F 57.0 °F 59% 29.90 in 10.0 mi SSW 17.3 mph - N/A   Clear
6:54 PM 68.0 °F 57.0 °F 68% 29.90 in 10.0 mi SSW 13.8 mph - N/A   Clear
7:54 PM 64.0 °F 57.0 °F 78% 29.91 in 10.0 mi South 10.4 mph - N/A   Clear
8:54 PM 61.0 °F 54.0 °F 78% 29.92 in 10.0 mi SSW 10.4 mph - N/A   Clear
9:54 PM 59.0 °F 53.1 °F 81% 29.94 in 10.0 mi SW 8.1 mph - N/A   Clear
10:36 PM 57.2 °F 53.6 °F 88% 29.96 in 10.0 mi SSW 6.9 mph - N/A   Scattered Clouds
10:54 PM 55.9 °F 53.1 °F 90% 29.94 in 10.0 mi SSW 6.9 mph - N/A   Partly Cloudy
11:54 PM 54.0 °F 51.1 °F 90% 29.95 in 10.0 mi West 3.5 mph - N/A   Clear