Weather History for Napa County, CA

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Saturday, August 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 68 °F 66 °F  
Max Temperature 81 °F 80 °F 86 °F (2007)
Min Temperature 54 °F 52 °F 45 °F (2007)
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 3    
Month to date cooling degree days 26  
Year to date cooling degree days 174  
Since 1 June cooling degree days 154  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 73    
Maximum Humidity 93    
Minimum Humidity 52    
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 29.91 in    
Wind  
Wind Speed 8 mph (SW)    
Max Wind Speed 18 mph    
Max Gust Speed 36 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 17, 2013 Rise Set
Actual Time 6:25 AM PDT 7:59 PM PDT
Civil Twilight 5:57 AM PDT 8:27 PM PDT
Nautical Twilight 5:24 AM PDT 9:01 PM PDT
Astronomical Twilight 4:48 AM PDT 9:36 PM PDT
Moon 5:18 PM PDT (8/17) 2:36 AM PDT (8/17)
Length of Visible Light 14h 29m
Length of Day
13h 33m
Waxing Gibbous, 85% of the Moon is Illuminated
Aug 17
Waxing Gibbous
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 62.1 °F 57.0 °F 84% 29.94 in 10.0 mi SW 10.4 mph - N/A   Clear
1:30 AM 62.6 °F 57.2 °F 82% 29.96 in 10.0 mi SW 11.5 mph - N/A   Mostly Cloudy
1:54 AM 61.0 °F 57.0 °F 87% 29.93 in 10.0 mi SW 11.5 mph - N/A   Mostly Cloudy
2:08 AM 60.8 °F 57.2 °F 88% 29.95 in 10.0 mi SW 11.5 mph - N/A   Scattered Clouds
2:38 AM 60.8 °F 57.2 °F 88% 29.95 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
2:54 AM 61.0 °F 57.0 °F 87% 29.92 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
3:12 AM 60.8 °F 57.2 °F 88% 29.94 in 10.0 mi West 6.9 mph - N/A   Partly Cloudy
3:54 AM 57.9 °F 55.0 °F 90% 29.92 in 10.0 mi Calm Calm - N/A   Clear
4:54 AM 57.9 °F 55.0 °F 90% 29.93 in 10.0 mi Calm Calm - N/A   Clear
5:54 AM 57.0 °F 54.0 °F 89% 29.94 in 10.0 mi Calm Calm - N/A   Clear
6:54 AM 54.0 °F 52.0 °F 93% 29.94 in 9.0 mi Calm Calm - N/A   Partly Cloudy
7:54 AM 62.1 °F 57.0 °F 84% 29.95 in 10.0 mi Calm Calm - N/A   Clear
8:54 AM 64.0 °F 57.0 °F 78% 29.97 in 10.0 mi Variable 5.8 mph - N/A   Scattered Clouds
9:54 AM 64.9 °F 57.0 °F 75% 29.95 in 10.0 mi WSW 4.6 mph - N/A   Clear
10:54 AM 70.0 °F 55.9 °F 61% 29.95 in 10.0 mi SSW 6.9 mph - N/A   Clear
11:54 AM 72.0 °F 57.0 °F 59% 29.94 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
12:54 PM 71.1 °F 57.0 °F 61% 29.93 in 10.0 mi SSW 8.1 mph - N/A   Clear
1:54 PM 73.0 °F 57.9 °F 59% 29.92 in 10.0 mi SSW 12.7 mph - N/A   Clear
2:54 PM 75.0 °F 57.9 °F 55% 29.89 in 10.0 mi SSW 12.7 mph - N/A   Clear
3:54 PM 75.9 °F 57.9 °F 54% 29.86 in 10.0 mi South 9.2 mph - N/A   Clear
4:54 PM 75.9 °F 57.9 °F 54% 29.84 in 10.0 mi SSW 12.7 mph - N/A   Clear
5:54 PM 79.0 °F 59.0 °F 50% 29.82 in 10.0 mi South 15.0 mph 35.7 mph N/A   Clear
6:54 PM 75.9 °F 59.0 °F 56% 29.82 in 10.0 mi SSW 15.0 mph - N/A   Clear
7:54 PM 69.1 °F 59.0 °F 70% 29.81 in 10.0 mi SSW 13.8 mph - N/A   Clear
8:54 PM 66.0 °F 59.0 °F 78% 29.83 in 10.0 mi SSW 12.7 mph - N/A   Clear
9:54 PM 64.9 °F 59.0 °F 81% 29.86 in 10.0 mi SSW 11.5 mph - N/A   Clear
10:54 PM 63.0 °F 57.9 °F 84% 29.85 in 10.0 mi SSW 9.2 mph - N/A   Clear
11:54 PM 61.0 °F 57.9 °F 90% 29.85 in 10.0 mi SW 8.1 mph - N/A   Clear