Weather History for Napa County, CA

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Friday, September 14, 2012

  Actual Average Record
Temperature  
Mean Temperature 63 °F 65 °F  
Max Temperature 75 °F 80 °F 89 °F (2004)
Min Temperature 51 °F 50 °F 46 °F (2001)
Degree Days  
Heating Degree Days 2    
Month to date heating degree days 24  
Since 1 July heating degree days 79  
Cooling Degree Days 0    
Month to date cooling degree days 10  
Year to date cooling degree days 163  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 72    
Maximum Humidity 93    
Minimum Humidity 50    
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 30.03 in    
Wind  
Wind Speed 7 mph (WSW)    
Max Wind Speed 16 mph    
Max Gust Speed 26 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 14, 2012 Rise Set
Actual Time 6:50 AM PDT 7:17 PM PDT
Civil Twilight 6:23 AM PDT 7:44 PM PDT
Nautical Twilight 5:52 AM PDT 8:15 PM PDT
Astronomical Twilight 5:20 AM PDT 8:47 PM PDT
Moon 5:21 AM PDT (9/14) 6:17 PM PDT (9/14)
Length of Visible Light 13h 20m
Length of Day
12h 27m
Waning Crescent, 2% of the Moon is Illuminated
Sep 14
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last 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 55.0 °F 50.0 °F 83% 30.03 in 10.0 mi Calm Calm - N/A   Clear
1:54 AM 55.0 °F 51.1 °F 86% 30.03 in 10.0 mi NW 3.5 mph - N/A   Clear
2:54 AM 54.0 °F 51.1 °F 90% 30.02 in 10.0 mi WSW 8.1 mph - N/A   Clear
3:54 AM 53.1 °F 50.0 °F 89% 30.04 in 10.0 mi NW 3.5 mph - N/A   Clear
4:54 AM 53.1 °F 51.1 °F 93% 30.03 in 10.0 mi WSW 4.6 mph - N/A   Partly Cloudy
5:02 AM 53.6 °F 51.8 °F 94% 30.06 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
5:54 AM 53.1 °F 51.1 °F 93% 30.03 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy
6:25 AM 53.6 °F 51.8 °F 94% 30.07 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
6:42 AM 53.6 °F 50.0 °F 88% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:54 AM 54.0 °F 51.1 °F 90% 30.05 in 10.0 mi West 3.5 mph - N/A   Overcast
7:54 AM 55.0 °F 52.0 °F 89% 30.06 in 10.0 mi West 6.9 mph - N/A   Overcast
8:54 AM 55.9 °F 52.0 °F 87% 30.07 in 10.0 mi West 9.2 mph - N/A   Overcast
9:54 AM 59.0 °F 53.1 °F 81% 30.07 in 10.0 mi SW 5.8 mph - N/A   Scattered Clouds
10:54 AM 64.0 °F 53.1 °F 67% 30.08 in 10.0 mi SW 6.9 mph - N/A   Clear
11:54 AM 66.9 °F 54.0 °F 63% 30.07 in 10.0 mi SSW 9.2 mph - N/A   Clear
12:54 PM 68.0 °F 55.0 °F 63% 30.06 in 10.0 mi SSW 9.2 mph - N/A   Clear
1:54 PM 72.0 °F 55.0 °F 55% 30.03 in 10.0 mi SSW 10.4 mph - N/A   Clear
2:54 PM 75.0 °F 55.0 °F 50% 30.00 in 10.0 mi South 9.2 mph - N/A   Clear
3:54 PM 75.0 °F 55.0 °F 50% 29.98 in 10.0 mi South 13.8 mph - N/A   Clear
4:54 PM 73.9 °F 55.9 °F 53% 29.96 in 10.0 mi South 13.8 mph - N/A   Clear
5:54 PM 71.1 °F 55.0 °F 57% 29.96 in 10.0 mi SSW 15.0 mph - N/A   Clear
6:54 PM 66.0 °F 55.9 °F 70% 29.97 in 10.0 mi South 10.4 mph - N/A   Clear
7:54 PM 60.1 °F 52.0 °F 75% 29.98 in 10.0 mi WNW 4.6 mph - N/A   Clear
8:54 PM 59.0 °F 50.0 °F 72% 30.00 in 10.0 mi Calm Calm - N/A   Clear
9:54 PM 55.9 °F 48.9 °F 77% 30.01 in 10.0 mi Calm Calm - N/A   Clear
10:54 PM 53.1 °F 46.9 °F 80% 30.02 in 10.0 mi Calm Calm - N/A   Clear
11:54 PM 53.1 °F 48.9 °F 86% 30.03 in 10.0 mi Calm Calm - N/A   Clear