Weather History for Napa County, CA

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Tuesday, September 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 67 °F 64 °F  
Max Temperature 80 °F 80 °F 94 °F (2000)
Min Temperature 54 °F 49 °F 42 °F (1952)
Degree Days  
Heating Degree Days 0    
Month to date heating degree days 1  
Since 1 July heating degree days 37  
Cooling Degree Days 2    
Month to date cooling degree days 57  
Year to date cooling degree days 294  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 62    
Maximum Humidity 86    
Minimum Humidity 37    
Precipitation  
Precipitation 0.00 in - 0.84 in (1989)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.80 in    
Wind  
Wind Speed 11 mph (WSW)    
Max Wind Speed 23 mph    
Max Gust Speed 29 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 17, 2013 Rise Set
Actual Time 6:52 AM PDT 7:13 PM PDT
Civil Twilight 6:26 AM PDT 7:39 PM PDT
Nautical Twilight 5:55 AM PDT 8:10 PM PDT
Astronomical Twilight 5:23 AM PDT 8:42 PM PDT
Moon 6:03 PM PDT (9/17) 4:54 AM PDT (9/17)
Length of Visible Light 13h 13m
Length of Day
12h 20m
Waxing Gibbous, 96% of the Moon is Illuminated
Sep 17
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 59.0 °F 54.0 °F 83% 29.79 in 10.0 mi WSW 11.5 mph - N/A   Clear
1:54 AM 57.9 °F 54.0 °F 87% 29.78 in 10.0 mi SW 10.4 mph - N/A   Clear
2:54 AM 57.0 °F 53.1 °F 87% 29.79 in 10.0 mi WSW 10.4 mph - N/A   Clear
3:54 AM 57.0 °F 53.1 °F 87% 29.78 in 10.0 mi SW 12.7 mph - N/A   Clear
4:54 AM 55.9 °F 52.0 °F 87% 29.79 in 10.0 mi WSW 10.4 mph - N/A   Clear
5:54 AM 55.9 °F 52.0 °F 87% 29.79 in 10.0 mi WSW 8.1 mph - N/A   Clear
6:54 AM 55.0 °F 52.0 °F 89% 29.80 in 10.0 mi SW 9.2 mph - N/A   Partly Cloudy
7:54 AM 57.9 °F 52.0 °F 81% 29.81 in 10.0 mi West 13.8 mph - N/A   Clear
8:54 AM 63.0 °F 53.1 °F 70% 29.81 in 10.0 mi WSW 12.7 mph - N/A   Clear
9:54 AM 68.0 °F 51.1 °F 55% 29.83 in 10.0 mi WSW 11.5 mph - N/A   Clear
10:54 AM 73.0 °F 51.1 °F 46% 29.82 in 10.0 mi West 13.8 mph - N/A   Clear
11:54 AM 78.1 °F 51.1 °F 39% 29.81 in 10.0 mi West 15.0 mph - N/A   Clear
12:54 PM 78.1 °F 51.1 °F 39% 29.80 in 10.0 mi West 16.1 mph - N/A   Clear
1:54 PM 78.1 °F 50.0 °F 37% 29.79 in 10.0 mi West 19.6 mph 27.6 mph N/A   Clear
2:54 PM 78.1 °F 51.1 °F 39% 29.78 in 10.0 mi West 19.6 mph - N/A   Clear
3:54 PM 78.1 °F 52.0 °F 40% 29.78 in 10.0 mi WSW 18.4 mph 25.3 mph N/A   Clear
4:54 PM 77.0 °F 52.0 °F 42% 29.77 in 10.0 mi West 19.6 mph 26.5 mph N/A   Clear
5:54 PM 73.9 °F 52.0 °F 46% 29.78 in 10.0 mi WSW 17.3 mph 24.2 mph N/A   Clear
6:54 PM 70.0 °F 52.0 °F 53% 29.79 in 10.0 mi West 8.1 mph - N/A   Clear
7:54 PM 64.9 °F 51.1 °F 61% 29.80 in 10.0 mi SSW 5.8 mph - N/A   Clear
8:54 PM 63.0 °F 51.1 °F 65% 29.83 in 10.0 mi South 3.5 mph - N/A   Clear
9:54 PM 60.1 °F 51.1 °F 72% 29.84 in 10.0 mi South 4.6 mph - N/A   Clear
10:54 PM 59.0 °F 48.9 °F 69% 29.84 in 10.0 mi West 3.5 mph - N/A   Clear
11:54 PM 55.9 °F 48.9 °F 77% 29.86 in 10.0 mi SSW 5.8 mph - N/A   Clear