Napa County, CA

7:15 AM PST on December 17, 2017 (GMT -0800)
Napa County

Weather History for KAPC - September, 2012

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Tuesday, September 25, 2012

  Actual Average Record
Temperature  
Mean Temperature 60 °F 63 °F  
Max Temperature 73 °F 79 °F 99 °F (2016)
Min Temperature 47 °F 47 °F 37 °F (2005)
Degree Days  
Heating Degree Days 5    
Month to date heating degree days 69  
Since 1 July heating degree days 124  
Cooling Degree Days 0    
Month to date cooling degree days 10  
Year to date cooling degree days 163  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 79    
Maximum Humidity 100    
Minimum Humidity 57    
Precipitation  
Precipitation 0.00 in - 0.26 in (1986)
Month to date precipitation 0.00  
Year to date precipitation 13.77  
Since 1 July precipitation T  
Sea Level Pressure  
Sea Level Pressure 29.87 in    
Wind  
Wind Speed 6 mph (SSW)    
Max Wind Speed 18 mph    
Max Gust Speed 22 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Sep. 25, 2012 Rise Set
Actual Time 7:00 AM PDT 7:00 PM PDT
Civil Twilight 6:33 AM PDT 7:26 PM PDT
Nautical Twilight 6:02 AM PDT 7:57 PM PDT
Astronomical Twilight 5:31 AM PDT 8:28 PM PDT
Moon 4:25 PM PDT (9/25) 2:30 AM PDT (9/25)
Length of Visible Light 12h 53m
Length of Day
12h 00m
Waxing Gibbous, 81% of the Moon is Illuminated
Sep 25
Waxing Gibbous
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New
Oct 21
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:45 AM 55.4 °F 53.6 °F 94% 29.90 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
12:54 AM 55.0 °F 53.1 °F 93% 29.88 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
1:09 AM 55.4 °F 53.6 °F 94% 29.90 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
1:30 AM 53.6 °F 51.8 °F 94% 29.90 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:54 AM 52.0 °F 50.0 °F 93% 29.88 in 10.0 mi Calm Calm - N/A   Clear
2:54 AM 50.0 °F 48.0 °F 93% 29.87 in 7.0 mi Calm Calm - N/A   Clear
3:54 AM 48.9 °F 48.0 °F 97% 29.86 in 8.0 mi Calm Calm - N/A   Clear
4:38 AM 48.2 °F 46.4 °F 93% 29.88 in 2.5 mi Calm Calm - N/A   Partly Cloudy
4:54 AM 48.0 °F 46.9 °F 96% 29.86 in 9.0 mi Calm Calm - N/A   Partly Cloudy
5:54 AM 48.9 °F 46.9 °F 93% 29.87 in 8.0 mi North 4.6 mph - N/A   Clear
6:54 AM 48.9 °F 46.9 °F 93% 29.88 in 9.0 mi North 3.5 mph - N/A   Mostly Cloudy
7:54 AM 51.1 °F 50.0 °F 96% 29.89 in 9.0 mi Calm Calm - N/A   Clear
8:20 AM 53.6 °F 51.8 °F 94% 29.92 in 7.0 mi NNW 3.5 mph - N/A   Partly Cloudy
8:47 AM 55.4 °F 51.8 °F 88% 29.92 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:54 AM 55.9 °F 52.0 °F 87% 29.90 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:08 AM 57.2 °F 53.6 °F 88% 29.93 in 9.0 mi Calm Calm - N/A   Scattered Clouds
9:54 AM 59.0 °F 54.0 °F 83% 29.91 in 9.0 mi SW 5.8 mph - N/A   Scattered Clouds
10:54 AM 61.0 °F 53.1 °F 75% 29.90 in 10.0 mi SSW 5.8 mph - N/A   Partly Cloudy
12:54 PM 68.0 °F 54.0 °F 61% 29.87 in 10.0 mi SSW 9.2 mph - N/A   Clear
1:54 PM 72.0 °F 55.0 °F 55% 29.85 in 10.0 mi SSW 10.4 mph - N/A   Clear
2:54 PM 72.0 °F 55.0 °F 55% 29.83 in 10.0 mi SSW 9.2 mph - N/A   Clear
3:54 PM 72.0 °F 55.0 °F 55% 29.82 in 10.0 mi South 11.5 mph - N/A   Clear
4:54 PM 68.0 °F 55.0 °F 63% 29.81 in 10.0 mi South 11.5 mph - N/A   Clear
5:54 PM 66.0 °F 55.0 °F 68% 29.81 in 10.0 mi SSW 8.1 mph - N/A   Clear
6:54 PM 61.0 °F 55.0 °F 81% 29.82 in 10.0 mi South 5.8 mph - N/A   Clear
7:54 PM 57.9 °F 54.0 °F 87% 29.82 in 10.0 mi SSW 11.5 mph - N/A   Clear
8:54 PM 57.0 °F 54.0 °F 89% 29.83 in 10.0 mi South 10.4 mph - N/A   Clear
10:54 PM 55.9 °F 52.0 °F 87% 29.85 in 9.0 mi SSW 8.1 mph - N/A   Partly Cloudy
11:09 PM 55.4 °F 53.6 °F 94% 29.88 in 7.0 mi SW 9.2 mph - N/A   Mostly Cloudy
11:54 PM 55.9 °F 53.1 °F 90% 29.86 in 7.0 mi SSW 11.5 mph - N/A   Overcast