Napa County, CA

4:13 PM PDT on April 25, 2017 (GMT -0700)
Napa County

Weather History for KAPC - September, 2012

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Wednesday, September 12, 2012

  Actual Average Record
Temperature  
Mean Temperature 63 °F 65 °F  
Max Temperature 76 °F 80 °F 99 °F (2003)
Min Temperature 50 °F 50 °F 40 °F (2005)
Degree Days  
Heating Degree Days 2    
Month to date heating degree days 22  
Since 1 July heating degree days 77  
Cooling Degree Days 0    
Month to date cooling degree days 9  
Year to date cooling degree days 162  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 53 °F    
Average Humidity 75    
Maximum Humidity 100    
Minimum Humidity 50    
Precipitation  
Precipitation 0.00 in - 1.44 in (1918)
Month to date precipitation 0.00  
Year to date precipitation 13.77  
Since 1 July precipitation T  
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 6 mph (SW)    
Max Wind Speed 16 mph    
Max Gust Speed 62 mph    
Visibility 6 miles    
Events Fog    
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. 12, 2012 Rise Set
Actual Time 6:48 AM PDT 7:20 PM PDT
Civil Twilight 6:22 AM PDT 7:47 PM PDT
Nautical Twilight 5:50 AM PDT 8:18 PM PDT
Astronomical Twilight 5:18 AM PDT 8:50 PM PDT
Moon 3:13 AM PDT (9/12) 5:09 PM PDT (9/12)
Length of Visible Light 13h 25m
Length of Day
12h 32m
Waning Crescent, 13% of the Moon is Illuminated
Sep 12
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
12:30 AM 57.2 °F 55.4 °F 94% 29.95 in 7.0 mi North - - N/A   Mostly Cloudy
12:47 AM 57.2 °F 55.4 °F 94% 29.95 in 9.0 mi SSW 8.1 mph 23.0 mph N/A   Scattered Clouds
12:54 AM 57.9 °F 55.0 °F 90% 29.93 in 8.0 mi SSW 8.1 mph - N/A   Scattered Clouds
1:54 AM 57.0 °F 54.0 °F 89% 29.93 in 9.0 mi SW 8.1 mph - N/A   Partly Cloudy
2:54 AM 55.0 °F 51.1 °F 86% 29.94 in 7.0 mi Calm Calm - N/A   Clear
3:54 AM 51.1 °F 50.0 °F 96% 29.95 in 4.0 mi West 4.6 mph - N/A   Clear
4:06 AM 51.8 °F 50.0 °F 94% 29.98 in 4.0 mi Calm Calm - N/A   Partly Cloudy
4:33 AM 50.0 °F 48.2 °F 94% 29.98 in 6.0 mi WSW 4.6 mph - N/A   Mostly Cloudy
4:54 AM 52.0 °F 50.0 °F 93% 29.96 in 8.0 mi WSW 3.5 mph - N/A   Overcast
5:24 AM 51.8 °F 50.0 °F 94% 30.00 in 1.5 mi WSW 5.8 mph - N/A   Overcast
5:30 AM 51.8 °F 50.0 °F 94% 30.00 in 0.5 mi WSW 5.8 mph - N/A Fog Fog
5:46 AM 51.8 °F 51.8 °F 100% 30.01 in 1.0 mi West 4.6 mph - N/A   Overcast
5:50 AM 53.6 °F 51.8 °F 94% 30.01 in 0.8 mi West 5.8 mph - N/A   Mist
5:54 AM 53.1 °F 52.0 °F 96% 29.99 in 0.8 mi West 4.6 mph - N/A   Mist
6:46 AM 53.6 °F 51.8 °F 94% 30.02 in 1.5 mi Calm Calm - N/A   Overcast
6:54 AM 53.1 °F 52.0 °F 96% 30.00 in 3.0 mi West 3.5 mph - N/A   Overcast
7:21 AM 53.6 °F 51.8 °F 94% 30.04 in 1.0 mi West 4.6 mph - N/A   Overcast
7:54 AM 53.1 °F 52.0 °F 96% 30.03 in 1.0 mi West 3.5 mph - N/A   Overcast
8:01 AM 53.6 °F 51.8 °F 94% 30.06 in 2.0 mi West 4.6 mph - N/A   Overcast
8:54 AM 54.0 °F 53.1 °F 97% 30.04 in 2.0 mi West 4.6 mph - N/A   Overcast
9:54 AM 54.0 °F 52.0 °F 93% 30.06 in 6.0 mi Calm Calm - N/A   Overcast
10:54 AM 57.0 °F 52.0 °F 83% 30.06 in 9.0 mi West 4.6 mph - N/A   Overcast
11:51 AM 62.6 °F 53.6 °F 72% 30.08 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
11:54 AM 63.0 °F 53.1 °F 70% 30.05 in 10.0 mi SW 4.6 mph - N/A   Partly Cloudy
12:54 PM 66.9 °F 54.0 °F 63% 30.03 in 10.0 mi SSW 3.5 mph - N/A   Clear
1:54 PM 71.1 °F 55.0 °F 57% 30.01 in 10.0 mi SSW 6.9 mph - N/A   Clear
2:54 PM 75.0 °F 55.9 °F 51% 29.98 in 10.0 mi SSW 8.1 mph - N/A   Clear
3:54 PM 75.0 °F 55.9 °F 51% 29.96 in 10.0 mi SSW 8.1 mph - N/A   Clear
4:54 PM 75.0 °F 55.9 °F 51% 29.95 in 10.0 mi SSW 10.4 mph - N/A   Clear
5:54 PM 72.0 °F 55.9 °F 57% 29.95 in 10.0 mi South 10.4 mph - N/A   Clear
6:54 PM 66.9 °F 55.9 °F 68% 29.95 in 10.0 mi South 9.2 mph - N/A   Clear
7:54 PM 64.0 °F 55.9 °F 75% 29.96 in 10.0 mi South 4.6 mph - N/A   Clear
8:54 PM 62.1 °F 55.0 °F 78% 29.99 in 10.0 mi SSW 9.2 mph - N/A   Clear
9:54 PM 61.0 °F 55.9 °F 83% 30.00 in 10.0 mi SSW 10.4 mph - N/A   Clear
10:54 PM 59.0 °F 54.0 °F 83% 30.01 in 10.0 mi SSW 8.1 mph - N/A   Clear
11:54 PM 57.9 °F 54.0 °F 87% 30.01 in 10.0 mi South 4.6 mph - N/A   Clear