Weather History for Napa County, CA

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Friday, August 3, 2012

  Actual Average Record
Temperature  
Mean Temperature 63 °F 65 °F  
Max Temperature 72 °F 78 °F 101 °F (1998)
Min Temperature 54 °F 52 °F 50 °F (2007)
Degree Days  
Heating Degree Days 2    
Month to date heating degree days 2  
Since 1 June heating degree days 89  
Since 1 July heating degree days 28  
Cooling Degree Days 0    
Month to date cooling degree days 5  
Year to date cooling degree days 110  
Since 1 June cooling degree days 96  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 53 °F    
Average Humidity 75    
Maximum Humidity 93    
Minimum Humidity 57    
Precipitation  
Precipitation 0.00 in - 0.00 in (2014)
Month to date precipitation 0.00  
Year to date precipitation 13.77  
Since 1 July precipitation T  
Sea Level Pressure  
Sea Level Pressure 29.84 in    
Wind  
Wind Speed 11 mph (SSW)    
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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Date:

Astronomy

Aug. 03, 2012 Rise Set
Actual Time 6:13 AM PDT 8:16 PM PDT
Civil Twilight 5:44 AM PDT 8:45 PM PDT
Nautical Twilight 5:09 AM PDT 9:20 PM PDT
Astronomical Twilight 4:30 AM PDT 9:58 PM PDT
Moon 9:00 PM PDT (8/3) 8:00 AM PDT (8/3)
Length of Visible Light 15h 00m
Length of Day
14h 02m
Full, 97% of the Moon is Illuminated
Aug 3
Full
Aug 9
Last Quarter
Aug 17
New
Aug 24
First Quarter
Aug 31
Full

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 55.9 °F 53.1 °F 90% 29.87 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
1:54 AM 55.9 °F 53.1 °F 90% 29.87 in 10.0 mi SSW 12.7 mph - N/A   Overcast
2:54 AM 55.9 °F 53.1 °F 90% 29.87 in 10.0 mi SSW 9.2 mph - N/A   Overcast
3:54 AM 55.9 °F 53.1 °F 90% 29.86 in 10.0 mi SW 10.4 mph - N/A   Overcast
4:54 AM 55.9 °F 53.1 °F 90% 29.85 in 10.0 mi SSW 11.5 mph - N/A   Overcast
5:54 AM 55.9 °F 53.1 °F 90% 29.86 in 10.0 mi WSW 6.9 mph - N/A   Overcast
6:54 AM 55.9 °F 53.1 °F 90% 29.86 in 10.0 mi SSW 9.2 mph - N/A   Overcast
8:54 AM 57.9 °F 52.0 °F 81% 29.88 in 10.0 mi South 9.2 mph - N/A   Overcast
9:54 AM 57.9 °F 53.1 °F 84% 29.88 in 10.0 mi SSW 10.4 mph - N/A   Overcast
10:54 AM 62.1 °F 53.1 °F 72% 29.88 in 10.0 mi SSW 11.5 mph 16.1 mph N/A   Overcast
11:30 AM 64.4 °F 53.6 °F 68% 29.90 in 10.0 mi SSW 9.2 mph - N/A   Scattered Clouds
11:54 AM 64.0 °F 54.0 °F 70% 29.87 in 10.0 mi SSW 8.1 mph - N/A   Partly Cloudy
12:54 PM 66.9 °F 54.0 °F 63% 29.86 in 10.0 mi South 11.5 mph - N/A   Clear
1:54 PM 69.1 °F 55.0 °F 61% 29.84 in 10.0 mi SSW 12.7 mph - N/A   Clear
2:54 PM 72.0 °F 55.0 °F 55% 29.82 in 10.0 mi South 10.4 mph - N/A   Clear
3:54 PM 70.0 °F 54.0 °F 57% 29.81 in 10.0 mi SSW 16.1 mph - N/A   Clear
4:54 PM 69.1 °F 53.1 °F 57% 29.79 in 10.0 mi SSW 15.0 mph 21.9 mph N/A   Clear
5:54 PM 66.9 °F 54.0 °F 63% 29.78 in 10.0 mi South 12.7 mph - N/A   Clear
6:54 PM 64.0 °F 54.0 °F 70% 29.78 in 10.0 mi South 11.5 mph - N/A   Clear
7:54 PM 60.1 °F 54.0 °F 80% 29.78 in 10.0 mi South 13.8 mph - N/A   Clear
8:54 PM 55.9 °F 53.1 °F 90% 29.81 in 10.0 mi South 17.3 mph - N/A   Clear
9:54 PM 55.9 °F 53.1 °F 90% 29.82 in 10.0 mi South 10.4 mph - N/A   Partly Cloudy
10:54 PM 55.9 °F 53.1 °F 90% 29.81 in 10.0 mi SSW 13.8 mph - N/A   Clear
11:54 PM 54.0 °F 51.1 °F 90% 29.83 in 10.0 mi SW 6.9 mph - N/A   Clear