Weather History for Napa County, CA

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Friday, August 9, 2013

  Actual Average Record
Temperature  
Mean Temperature 65 °F 66 °F  
Max Temperature 75 °F 79 °F 100 °F (2002)
Min Temperature 55 °F 52 °F 49 °F (2009)
Degree Days  
Heating Degree Days 0    
Month to date heating degree days 14  
Since 1 June heating degree days 64  
Since 1 July heating degree days 34  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 148  
Since 1 June cooling degree days 128  
Growing Degree Days 13 (Base 50)    
Moisture  
Dew Point 53 °F    
Average Humidity 70    
Maximum Humidity 86    
Minimum Humidity 53    
Precipitation  
Precipitation 0.00 in - 0.11 in (1962)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 10 mph (WSW)    
Max Wind Speed 20 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. 09, 2013 Rise Set
Actual Time 6:18 AM PDT 8:09 PM PDT
Civil Twilight 5:50 AM PDT 8:38 PM PDT
Nautical Twilight 5:15 AM PDT 9:12 PM PDT
Astronomical Twilight 4:38 AM PDT 9:49 PM PDT
Moon 9:07 AM PDT (8/9) 9:26 PM PDT (8/9)
Length of Visible Light 14h 47m
Length of Day
13h 50m
Waxing Crescent, 8% of the Moon is Illuminated
Aug 9
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
12:05 AM 53.6 °F 51.8 °F 94% 29.96 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
12:54 AM 55.0 °F 52.0 °F 89% 29.93 in 10.0 mi West 8.1 mph - N/A   Overcast
1:54 AM 55.0 °F 51.1 °F 86% 29.93 in 10.0 mi West 8.1 mph - N/A   Overcast
2:54 AM 55.9 °F 51.1 °F 84% 29.92 in 10.0 mi WSW 10.4 mph - N/A   Overcast
3:16 AM 55.4 °F 51.8 °F 88% 29.94 in 10.0 mi West 6.9 mph - N/A   Overcast
3:54 AM 55.9 °F 52.0 °F 87% 29.91 in 10.0 mi West 5.8 mph - N/A   Overcast
4:47 AM 55.4 °F 51.8 °F 88% 29.93 in 10.0 mi WNW 9.2 mph - N/A   Overcast
4:54 AM 55.0 °F 52.0 °F 89% 29.91 in 10.0 mi NW 6.9 mph - N/A   Overcast
5:54 AM 55.0 °F 51.1 °F 86% 29.91 in 10.0 mi NW 5.8 mph - N/A   Overcast
6:30 AM 55.4 °F 51.8 °F 88% 29.93 in 10.0 mi WNW 5.8 mph - N/A   Overcast
6:54 AM 55.0 °F 51.1 °F 86% 29.91 in 10.0 mi West 5.8 mph - N/A   Overcast
7:54 AM 55.9 °F 51.1 °F 84% 29.92 in 10.0 mi WNW 5.8 mph - N/A   Overcast
7:57 AM 55.4 °F 51.8 °F 88% 29.95 in 10.0 mi WNW 6.9 mph - N/A   Overcast
8:54 AM 57.9 °F 51.1 °F 78% 29.93 in 10.0 mi NNW 5.8 mph - N/A   Overcast
9:54 AM 59.0 °F 52.0 °F 78% 29.93 in 10.0 mi WSW 3.5 mph - N/A   Overcast
10:54 AM 62.1 °F 53.1 °F 72% 29.94 in 10.0 mi WSW 4.6 mph - N/A   Overcast
11:54 AM 66.0 °F 53.1 °F 63% 29.94 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy
12:01 PM 66.2 °F 53.6 °F 64% 29.96 in 10.0 mi South 9.2 mph - N/A   Clear
12:54 PM 70.0 °F 54.0 °F 57% 29.92 in 10.0 mi South 8.1 mph - N/A   Clear
1:54 PM 71.1 °F 55.0 °F 57% 29.91 in 10.0 mi South 13.8 mph - N/A   Clear
2:54 PM 73.9 °F 55.9 °F 53% 29.91 in 10.0 mi South 16.1 mph - N/A   Clear
3:54 PM 73.9 °F 55.0 °F 52% 29.90 in 10.0 mi SSW 18.4 mph - N/A   Clear
4:54 PM 72.0 °F 57.0 °F 59% 29.89 in 10.0 mi SSW 17.3 mph - N/A   Clear
5:54 PM 70.0 °F 54.0 °F 57% 29.89 in 10.0 mi West 16.1 mph - N/A   Clear
6:54 PM 64.9 °F 53.1 °F 65% 29.90 in 10.0 mi West 16.1 mph - N/A   Clear
7:54 PM 61.0 °F 53.1 °F 75% 29.92 in 10.0 mi West 16.1 mph - N/A   Clear
8:54 PM 57.9 °F 53.1 °F 84% 29.93 in 10.0 mi West 16.1 mph - N/A   Clear
9:54 PM 57.0 °F 52.0 °F 83% 29.96 in 10.0 mi West 10.4 mph - N/A   Clear
10:54 PM 55.9 °F 52.0 °F 87% 29.96 in 10.0 mi WSW 4.6 mph - N/A   Clear
11:13 PM 55.4 °F 53.6 °F 94% 29.99 in 10.0 mi WSW 5.8 mph - N/A   Mostly Cloudy
11:54 PM 57.9 °F 53.1 °F 84% 29.97 in 10.0 mi WSW 5.8 mph - N/A   Overcast