Weather History for Napa County, CA

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Thursday, August 22, 2013

  Actual Average Record
Temperature  
Mean Temperature 67 °F 66 °F  
Max Temperature 78 °F 80 °F 97 °F (1999)
Min Temperature 55 °F 52 °F 45 °F (2006)
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 2    
Month to date cooling degree days 49  
Year to date cooling degree days 197  
Since 1 June cooling degree days 177  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 53 °F    
Average Humidity 68    
Maximum Humidity 93    
Minimum Humidity 43    
Precipitation  
Precipitation 0.00 in - 0.11 in (1976)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.90 in    
Wind  
Wind Speed 13 mph (West)    
Max Wind Speed 21 mph    
Max Gust Speed 25 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 22, 2013 Rise Set
Actual Time 6:30 AM PDT 7:52 PM PDT
Civil Twilight 6:02 AM PDT 8:20 PM PDT
Nautical Twilight 5:29 AM PDT 8:53 PM PDT
Astronomical Twilight 4:54 AM PDT 9:27 PM PDT
Moon 8:43 PM PDT (8/22) 8:22 AM PDT (8/22)
Length of Visible Light 14h 17m
Length of Day
13h 22m
Waning Gibbous, 96% of the Moon is Illuminated
Aug 22
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
12:54 AM 55.9 °F 52.0 °F 87% 29.89 in 10.0 mi WNW 5.8 mph - N/A   Clear
1:54 AM 55.9 °F 52.0 °F 87% 29.89 in 10.0 mi WNW 4.6 mph - N/A   Clear
2:54 AM 55.0 °F 52.0 °F 89% 29.89 in 10.0 mi West 8.1 mph - N/A   Clear
3:54 AM 57.0 °F 54.0 °F 89% 29.89 in 10.0 mi West 12.7 mph - N/A   Clear
4:49 AM 55.4 °F 53.6 °F 94% 29.91 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy
4:54 AM 55.9 °F 53.1 °F 90% 29.89 in 10.0 mi West 11.5 mph - N/A   Clear
5:01 AM 55.4 °F 53.6 °F 94% 29.91 in 10.0 mi West 15.0 mph - N/A   Partly Cloudy
5:54 AM 55.9 °F 53.1 °F 90% 29.89 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
6:01 AM 55.4 °F 53.6 °F 94% 29.92 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
6:44 AM 55.4 °F 53.6 °F 94% 29.93 in 10.0 mi West 11.5 mph - N/A   Overcast
6:54 AM 57.0 °F 53.1 °F 87% 29.91 in 10.0 mi West 9.2 mph - N/A   Overcast
7:32 AM 57.2 °F 53.6 °F 88% 29.95 in 10.0 mi West 10.4 mph - N/A   Overcast
7:54 AM 57.0 °F 53.1 °F 87% 29.93 in 10.0 mi WNW 11.5 mph - N/A   Overcast
8:54 AM 57.9 °F 53.1 °F 84% 29.94 in 10.0 mi West 12.7 mph - N/A   Overcast
9:54 AM 59.0 °F 53.1 °F 81% 29.95 in 10.0 mi West 11.5 mph - N/A   Overcast
10:54 AM 62.1 °F 53.1 °F 72% 29.95 in 10.0 mi West 11.5 mph - N/A   Overcast
11:32 AM 66.2 °F 53.6 °F 64% 29.97 in 10.0 mi West 12.7 mph 18.4 mph N/A   Scattered Clouds
11:54 AM 68.0 °F 53.1 °F 59% 29.94 in 10.0 mi West 13.8 mph - N/A   Clear
12:54 PM 72.0 °F 53.1 °F 51% 29.92 in 10.0 mi West 13.8 mph 20.7 mph N/A   Clear
1:54 PM 73.0 °F 55.0 °F 53% 29.90 in 10.0 mi SW 11.5 mph - N/A   Clear
2:54 PM 75.9 °F 55.0 °F 48% 29.88 in 10.0 mi SW 10.4 mph 20.7 mph N/A   Clear
3:54 PM 77.0 °F 50.0 °F 39% 29.87 in 10.0 mi West 17.3 mph - N/A   Clear
4:54 PM 75.0 °F 51.1 °F 43% 29.86 in 10.0 mi West 19.6 mph 25.3 mph N/A   Clear
5:54 PM 72.0 °F 52.0 °F 49% 29.86 in 10.0 mi WSW 16.1 mph - N/A   Clear
6:54 PM 66.0 °F 52.0 °F 60% 29.85 in 10.0 mi WSW 19.6 mph - N/A   Clear
7:54 PM 61.0 °F 52.0 °F 72% 29.85 in 10.0 mi West 18.4 mph - N/A   Clear
8:54 PM 59.0 °F 52.0 °F 78% 29.88 in 10.0 mi WSW 12.7 mph 18.4 mph N/A   Clear
9:54 PM 57.9 °F 52.0 °F 81% 29.89 in 10.0 mi WSW 9.2 mph - N/A   Clear
10:54 PM 57.9 °F 52.0 °F 81% 29.89 in 10.0 mi WSW 9.2 mph - N/A   Clear
11:54 PM 57.9 °F 53.1 °F 84% 29.89 in 10.0 mi West 13.8 mph - N/A   Clear