Weather History for Napa County, CA

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Friday, August 23, 2013

  Actual Average Record
Temperature  
Mean Temperature 66 °F 66 °F  
Max Temperature 74 °F 81 °F 96 °F (2010)
Min Temperature 57 °F 52 °F 45 °F (2005)
Degree Days  
Heating Degree Days 0    
Month to date heating degree days 16  
Since 1 June heating degree days 66  
Since 1 July heating degree days 36  
Cooling Degree Days 1    
Month to date cooling degree days 50  
Year to date cooling degree days 198  
Since 1 June cooling degree days 178  
Growing Degree Days 15 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 70    
Maximum Humidity 86    
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 29.85 in    
Wind  
Wind Speed 10 mph (SW)    
Max Wind Speed 16 mph    
Max Gust Speed 31 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 23, 2013 Rise Set
Actual Time 6:31 AM PDT 7:51 PM PDT
Civil Twilight 6:03 AM PDT 8:18 PM PDT
Nautical Twilight 5:30 AM PDT 8:51 PM PDT
Astronomical Twilight 4:55 AM PDT 9:26 PM PDT
Moon 9:17 PM PDT (8/23) 9:28 AM PDT (8/23)
Length of Visible Light 14h 15m
Length of Day
13h 20m
Waning Gibbous, 91% of the Moon is Illuminated
Aug 23
Waning Gibbous
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter
Sep 19
Full

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:46 AM 57.2 °F 53.6 °F 88% 29.92 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
12:54 AM 57.9 °F 53.1 °F 84% 29.90 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
1:54 AM 57.9 °F 53.1 °F 84% 29.90 in 10.0 mi West 10.4 mph - N/A   Overcast
2:54 AM 59.0 °F 53.1 °F 81% 29.89 in 10.0 mi West 12.7 mph - N/A   Overcast
3:54 AM 57.9 °F 53.1 °F 84% 29.88 in 10.0 mi West 10.4 mph - N/A   Overcast
4:54 AM 57.0 °F 53.1 °F 87% 29.88 in 10.0 mi West 9.2 mph - N/A   Overcast
5:54 AM 57.0 °F 53.1 °F 87% 29.88 in 10.0 mi West 6.9 mph - N/A   Overcast
6:54 AM 57.0 °F 53.1 °F 87% 29.89 in 10.0 mi West 8.1 mph - N/A   Overcast
7:54 AM 57.9 °F 53.1 °F 84% 29.89 in 10.0 mi West 8.1 mph - N/A   Overcast
8:54 AM 57.9 °F 53.1 °F 84% 29.90 in 10.0 mi West 9.2 mph - N/A   Overcast
9:54 AM 60.1 °F 53.1 °F 78% 29.90 in 10.0 mi West 8.1 mph - N/A   Overcast
10:54 AM 63.0 °F 53.1 °F 70% 29.90 in 10.0 mi SW 6.9 mph - N/A   Mostly Cloudy
11:32 AM 66.2 °F 53.6 °F 64% 29.92 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
11:54 AM 66.9 °F 54.0 °F 63% 29.89 in 10.0 mi South 9.2 mph - N/A   Clear
12:54 PM 70.0 °F 55.0 °F 59% 29.87 in 10.0 mi SSW 10.4 mph - N/A   Clear
1:54 PM 71.1 °F 55.0 °F 57% 29.86 in 10.0 mi SSW 9.2 mph - N/A   Clear
2:54 PM 73.0 °F 55.9 °F 55% 29.83 in 10.0 mi SSW 13.8 mph - N/A   Clear
3:54 PM 73.0 °F 57.0 °F 57% 29.81 in 10.0 mi SSW 12.7 mph - N/A   Clear
4:54 PM 73.0 °F 57.0 °F 57% 29.79 in 10.0 mi SSW 13.8 mph - N/A   Clear
5:54 PM 71.1 °F 55.9 °F 59% 29.78 in 10.0 mi SSW 12.7 mph - N/A   Clear
6:54 PM 70.0 °F 57.0 °F 63% 29.77 in 10.0 mi South 13.8 mph - N/A   Clear
7:54 PM 66.0 °F 57.0 °F 73% 29.77 in 10.0 mi SSW 12.7 mph - N/A   Clear
8:54 PM 64.0 °F 57.0 °F 78% 29.78 in 10.0 mi SSW 11.5 mph - N/A   Clear
9:54 PM 62.1 °F 53.1 °F 72% 29.79 in 10.0 mi SW 10.4 mph - N/A   Clear
10:54 PM 60.1 °F 53.1 °F 78% 29.80 in 10.0 mi SW 6.9 mph - N/A   Clear
11:54 PM 57.9 °F 53.1 °F 84% 29.80 in 10.0 mi West 3.5 mph - N/A   Clear