Weather History for Napa County, CA

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Thursday, September 4, 2014

  Actual Average Record
Temperature  
Mean Temperature 66 °F 66 °F  
Max Temperature 76 °F 81 °F 100 °F (2004)
Min Temperature 56 °F 51 °F 43 °F (2000)
Degree Days  
Heating Degree Days 0    
Month to date heating degree days 0  
Since 1 July heating degree days 22  
Cooling Degree Days 1    
Month to date cooling degree days 11  
Year to date cooling degree days 184  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 77    
Maximum Humidity 100    
Minimum Humidity 54    
Precipitation  
Precipitation 0.00 in - 0.00 in (2014)
Month to date precipitation 0.00  
Year to date precipitation 8.34  
Since 1 July precipitation 0.07  
Sea Level Pressure  
Sea Level Pressure 29.73 in    
Wind  
Wind Speed 10 mph (WSW)    
Max Wind Speed 20 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Sep. 04, 2014 Rise Set
Actual Time 6:41 AM PDT 7:34 PM PDT
Civil Twilight 6:14 AM PDT 8:00 PM PDT
Nautical Twilight 5:42 AM PDT 8:32 PM PDT
Astronomical Twilight 5:09 AM PDT 9:05 PM PDT
Moon 4:14 PM PDT (9/4) 1:40 AM PDT (9/4)
Length of Visible Light 13h 46m
Length of Day
12h 52m
Waxing Gibbous, 75% of the Moon is Illuminated
Sep 4
Waxing Gibbous
Sep 8
Full
Sep 15
Last Quarter
Sep 23
New
Oct 1
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 57.0 °F 55.9 °F 96% 29.69 in 10.0 mi West 9.2 mph - N/A   Clear
1:54 AM 57.0 °F 55.9 °F 96% 29.69 in 10.0 mi West 6.9 mph - N/A   Clear
2:54 AM 57.0 °F 55.9 °F 96% 29.70 in 10.0 mi West 6.9 mph - N/A   Scattered Clouds
3:04 AM 57.0 °F 55.9 °F 96% 29.72 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy
3:54 AM 57.9 °F 57.0 °F 97% 29.69 in 10.0 mi West 5.8 mph - N/A   Overcast
4:54 AM 57.0 °F 55.9 °F 96% 29.69 in 10.0 mi West 8.1 mph - N/A   Overcast
5:54 AM 57.9 °F 55.9 °F 93% 29.69 in 10.0 mi NW 6.9 mph - N/A   Overcast
6:54 AM 57.9 °F 57.0 °F 97% 29.71 in 9.0 mi NNW 6.9 mph - N/A   Overcast
7:54 AM 57.9 °F 57.0 °F 97% 29.72 in 10.0 mi NW 6.9 mph - N/A   Overcast
8:54 AM 59.0 °F 55.9 °F 90% 29.73 in 10.0 mi NW 8.1 mph - N/A   Overcast
9:01 AM 60.1 °F 55.9 °F 86% 29.76 in 10.0 mi WNW 5.8 mph - N/A   Overcast
9:24 AM 60.1 °F 55.9 °F 86% 29.76 in 10.0 mi WNW 6.9 mph - N/A   Overcast
9:33 AM 61.0 °F 55.9 °F 83% 29.77 in 10.0 mi WNW 6.9 mph - N/A   Overcast
9:54 AM 62.1 °F 55.9 °F 80% 29.75 in 10.0 mi West 5.8 mph - N/A   Overcast
10:54 AM 64.0 °F 55.9 °F 75% 29.76 in 10.0 mi WSW 6.9 mph - N/A   Overcast
11:12 AM 64.9 °F 55.9 °F 73% 29.78 in 10.0 mi WSW 5.8 mph - N/A   Scattered Clouds
11:54 AM 68.0 °F 57.0 °F 68% 29.75 in 10.0 mi Variable 5.8 mph - N/A   Clear
12:54 PM 70.0 °F 57.9 °F 65% 29.73 in 10.0 mi SSW 10.4 mph - N/A   Clear
1:54 PM 73.9 °F 57.9 °F 57% 29.72 in 10.0 mi SSW 12.7 mph - N/A   Clear
2:54 PM 75.0 °F 57.9 °F 55% 29.70 in 10.0 mi SSW 15.0 mph - N/A   Clear
3:54 PM 73.9 °F 59.0 °F 59% 29.70 in 10.0 mi South 18.4 mph - N/A   Clear
4:54 PM 72.0 °F 59.0 °F 64% 29.69 in 10.0 mi South 17.3 mph - N/A   Clear
5:54 PM 68.0 °F 59.0 °F 73% 29.69 in 10.0 mi South 17.3 mph - N/A   Clear
7:54 PM 64.0 °F 60.1 °F 87% 29.72 in 10.0 mi SSW 15.0 mph - N/A   Clear
8:54 PM 62.1 °F 57.9 °F 86% 29.73 in 10.0 mi SW 6.9 mph - N/A   Clear
9:54 PM 60.1 °F 55.9 °F 86% 29.75 in 10.0 mi West 9.2 mph - N/A   Clear
10:54 PM 59.0 °F 55.9 °F 90% 29.76 in 10.0 mi West 9.2 mph - N/A   Clear
11:54 PM 57.9 °F 55.9 °F 93% 29.77 in 9.0 mi West 11.5 mph - N/A   Clear