Weather History for Napa County, CA

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Monday, September 16, 2013

  Actual Average Record
Temperature  
Mean Temperature 66 °F 65 °F  
Max Temperature 80 °F 80 °F 85 °F (2004)
Min Temperature 52 °F 49 °F 38 °F (2006)
Degree Days  
Heating Degree Days 0    
Month to date heating degree days 1  
Since 1 July heating degree days 37  
Cooling Degree Days 1    
Month to date cooling degree days 55  
Year to date cooling degree days 292  
Growing Degree Days 15 (Base 50)    
Moisture  
Dew Point 55 °F    
Average Humidity 71    
Maximum Humidity 100    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in - 1.00 in (1982)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.82 in    
Wind  
Wind Speed 8 mph (WSW)    
Max Wind Speed 21 mph    
Max Gust Speed 35 mph    
Visibility 7 miles    
Events Fog    
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. 16, 2013 Rise Set
Actual Time 6:51 AM PDT 7:15 PM PDT
Civil Twilight 6:25 AM PDT 7:41 PM PDT
Nautical Twilight 5:54 AM PDT 8:12 PM PDT
Astronomical Twilight 5:22 AM PDT 8:44 PM PDT
Moon 5:26 PM PDT (9/16) 3:46 AM PDT (9/16)
Length of Visible Light 13h 15m
Length of Day
12h 23m
Waxing Gibbous, 91% of the Moon is Illuminated
Sep 16
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
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 60.1 °F 57.9 °F 93% 29.83 in 10.0 mi WSW 4.6 mph - N/A   Clear
1:54 AM 57.9 °F 55.9 °F 93% 29.83 in 10.0 mi WSW 5.8 mph - N/A   Clear
2:54 AM 57.9 °F 55.9 °F 93% 29.83 in 10.0 mi WSW 6.9 mph - N/A   Clear
3:54 AM 57.0 °F 55.0 °F 93% 29.83 in 10.0 mi West 6.9 mph - N/A   Clear
4:51 AM 51.8 °F 51.8 °F 100% 29.85 in 5.0 mi NNW 4.6 mph - N/A   Scattered Clouds
4:54 AM 53.1 °F 51.1 °F 93% 29.83 in 1.2 mi NNW 5.8 mph - N/A   Mostly Cloudy
4:57 AM 53.6 °F 51.8 °F 94% 29.85 in 0.5 mi NNW 4.6 mph - N/A Fog Fog
5:54 AM 53.1 °F 53.1 °F 100% 29.84 in 0.2 mi Calm Calm - N/A Fog Fog
6:54 AM 55.0 °F 54.0 °F 96% 29.85 in 0.5 mi Calm Calm - N/A Fog Fog
7:05 AM 55.4 °F 53.6 °F 94% 29.87 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
7:54 AM 57.9 °F 57.0 °F 97% 29.86 in 6.0 mi West 3.5 mph - N/A   Partly Cloudy
8:12 AM 57.2 °F 57.2 °F 100% 29.88 in 0.5 mi NNW 5.8 mph - N/A Fog Fog
8:54 AM 59.0 °F 57.9 °F 96% 29.86 in 0.5 mi NW 3.5 mph - N/A Fog Fog
9:01 AM 59.0 °F 57.2 °F 94% 29.89 in 3.0 mi WNW 4.6 mph - N/A   Overcast
9:54 AM 62.1 °F 57.0 °F 84% 29.87 in 10.0 mi WNW 3.5 mph - N/A   Haze
10:02 AM 62.6 °F 57.2 °F 82% 29.89 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:54 AM 68.0 °F 57.0 °F 68% 29.87 in 10.0 mi Variable 5.8 mph - N/A   Scattered Clouds
11:54 AM 70.0 °F 57.9 °F 65% 29.86 in 10.0 mi SSW 5.8 mph - N/A   Clear
12:54 PM 73.0 °F 57.9 °F 59% 29.84 in 10.0 mi SSW 9.2 mph - N/A   Clear
1:54 PM 77.0 °F 57.9 °F 52% 29.81 in 10.0 mi SSW 11.5 mph - N/A   Clear
2:54 PM 79.0 °F 59.0 °F 50% 29.78 in 10.0 mi SSW 12.7 mph - N/A   Clear
3:54 PM 78.1 °F 57.9 °F 50% 29.77 in 10.0 mi SSW 16.1 mph - N/A   Clear
4:54 PM 77.0 °F 57.9 °F 52% 29.75 in 10.0 mi SSW 16.1 mph - N/A   Clear
5:54 PM 78.1 °F 54.0 °F 43% 29.74 in 10.0 mi SW 12.7 mph - N/A   Clear
6:54 PM 71.1 °F 55.0 °F 57% 29.74 in 10.0 mi SW 10.4 mph - N/A   Clear
7:54 PM 64.9 °F 53.1 °F 65% 29.74 in 10.0 mi SW 10.4 mph - N/A   Clear
8:54 PM 63.0 °F 54.0 °F 72% 29.76 in 10.0 mi SSW 10.4 mph - N/A   Clear
9:54 PM 62.1 °F 53.1 °F 72% 29.78 in 10.0 mi SW 9.2 mph - N/A   Clear
10:54 PM 62.1 °F 52.0 °F 70% 29.78 in 10.0 mi SW 10.4 mph - N/A   Clear
11:54 PM 60.1 °F 53.1 °F 78% 29.79 in 10.0 mi WSW 15.0 mph - N/A   Clear