Weather History for Napa County, CA

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Sunday, August 4, 2013

  Actual Average Record
Temperature  
Mean Temperature 63 °F 65 °F  
Max Temperature 71 °F 78 °F 95 °F (1998)
Min Temperature 54 °F 52 °F 46 °F (1918)
Degree Days  
Heating Degree Days 2    
Month to date heating degree days 11  
Since 1 June heating degree days 61  
Since 1 July heating degree days 31  
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 12 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 73    
Maximum Humidity 93    
Minimum Humidity 53    
Precipitation  
Precipitation 0.00 in - 0.00 in (2014)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 11 mph (WSW)    
Max Wind Speed 18 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 04, 2013 Rise Set
Actual Time 6:14 AM PDT 8:15 PM PDT
Civil Twilight 5:45 AM PDT 8:44 PM PDT
Nautical Twilight 5:10 AM PDT 9:19 PM PDT
Astronomical Twilight 4:31 AM PDT 9:57 PM PDT
Moon 4:20 AM PDT (8/4) 6:41 PM PDT (8/4)
Length of Visible Light 14h 58m
Length of Day
14h 00m
Waning Crescent, 4% of the Moon is Illuminated
Aug 4
Waning Crescent
Aug 6
New
Aug 14
First Quarter
Aug 20
Full
Aug 28
Last Quarter

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% 29.97 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
12:30 AM 53.6 °F 51.8 °F 94% 29.97 in 10.0 mi WNW 4.6 mph - N/A   Overcast
12:54 AM 55.0 °F 52.0 °F 89% 29.94 in 10.0 mi West 5.8 mph - N/A   Overcast
1:54 AM 54.0 °F 51.1 °F 90% 29.94 in 10.0 mi WNW 6.9 mph - N/A   Overcast
2:54 AM 54.0 °F 50.0 °F 86% 29.95 in 10.0 mi WNW 10.4 mph - N/A   Overcast
3:54 AM 54.0 °F 50.0 °F 86% 29.95 in 10.0 mi WNW 9.2 mph - N/A   Overcast
4:54 AM 54.0 °F 50.0 °F 86% 29.96 in 10.0 mi West 9.2 mph - N/A   Overcast
5:54 AM 54.0 °F 50.0 °F 86% 29.96 in 10.0 mi WNW 8.1 mph - N/A   Overcast
6:54 AM 54.0 °F 50.0 °F 86% 29.97 in 10.0 mi West 9.2 mph - N/A   Overcast
7:54 AM 55.0 °F 50.0 °F 83% 29.98 in 10.0 mi WNW 8.1 mph - N/A   Overcast
8:54 AM 55.9 °F 50.0 °F 80% 29.99 in 10.0 mi WNW 6.9 mph - N/A   Overcast
9:54 AM 57.0 °F 50.0 °F 77% 29.99 in 10.0 mi West 8.1 mph - N/A   Overcast
10:24 AM 59.0 °F 50.0 °F 72% 30.01 in 10.0 mi West 6.9 mph - N/A   Overcast
10:54 AM 59.0 °F 51.1 °F 75% 29.99 in 10.0 mi WSW 5.8 mph - N/A   Overcast
11:54 AM 61.0 °F 52.0 °F 72% 29.98 in 10.0 mi SSW 8.1 mph - N/A   Scattered Clouds
12:54 PM 64.9 °F 53.1 °F 65% 29.97 in 10.0 mi SSW 10.4 mph - N/A   Scattered Clouds
1:54 PM 66.9 °F 53.1 °F 61% 29.96 in 10.0 mi SSW 11.5 mph - N/A   Clear
2:54 PM 69.1 °F 53.1 °F 57% 29.94 in 10.0 mi SSW 13.8 mph - N/A   Clear
3:54 PM 69.1 °F 54.0 °F 58% 29.93 in 10.0 mi SSW 15.0 mph - N/A   Clear
4:54 PM 71.1 °F 54.0 °F 55% 29.92 in 10.0 mi South 16.1 mph - N/A   Clear
5:54 PM 66.9 °F 54.0 °F 63% 29.92 in 10.0 mi South 16.1 mph - N/A   Clear
6:54 PM 66.9 °F 53.1 °F 61% 29.92 in 10.0 mi WSW 17.3 mph - N/A   Clear
7:54 PM 59.0 °F 52.0 °F 78% 29.94 in 10.0 mi West 13.8 mph - N/A   Clear
8:54 PM 55.9 °F 51.1 °F 84% 29.96 in 10.0 mi West 8.1 mph - N/A   Clear
9:54 PM 55.0 °F 51.1 °F 86% 29.98 in 10.0 mi West 10.4 mph - N/A   Clear
10:35 PM 55.4 °F 51.8 °F 88% 30.00 in 10.0 mi WSW 11.5 mph - N/A   Partly Cloudy
10:54 PM 55.0 °F 51.1 °F 86% 29.98 in 10.0 mi WSW 10.4 mph - N/A   Mostly Cloudy
11:54 PM 55.9 °F 52.0 °F 87% 29.98 in 10.0 mi West 10.4 mph - N/A   Overcast