Weather History for Napa County, CA

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Thursday, August 15, 2013

  Actual Average Record
Temperature  
Mean Temperature 70 °F 66 °F  
Max Temperature 88 °F 80 °F 88 °F (2013)
Min Temperature 52 °F 52 °F 47 °F (2000)
Degree Days  
Heating Degree Days 0    
Month to date heating degree days 16  
Since 1 June heating degree days 66  
Since 1 July heating degree days 36  
Cooling Degree Days 5    
Month to date cooling degree days 14  
Year to date cooling degree days 162  
Since 1 June cooling degree days 142  
Growing Degree Days 19 (Base 50)    
Moisture  
Dew Point 58 °F    
Average Humidity 73    
Maximum Humidity 100    
Minimum Humidity 45    
Precipitation  
Precipitation 0.00 in - 0.55 in (1976)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.90 in    
Wind  
Wind Speed 9 mph (SW)    
Max Wind Speed 20 mph    
Max Gust Speed 25 mph    
Visibility 7 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 15, 2013 Rise Set
Actual Time 6:24 AM PDT 8:02 PM PDT
Civil Twilight 5:56 AM PDT 8:30 PM PDT
Nautical Twilight 5:22 AM PDT 9:04 PM PDT
Astronomical Twilight 4:46 AM PDT 9:39 PM PDT
Moon 3:23 PM PDT (8/15) 12:39 AM PDT (8/15)
Length of Visible Light 14h 34m
Length of Day
13h 38m
Waxing Gibbous, 65% of the Moon is Illuminated
Aug 15
Waxing Gibbous
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 62.1 °F - 57.0 °F 84% 29.89 in 10.0 mi West 4.6 mph - N/A   Clear
1:54 AM 61.0 °F - 57.9 °F 90% 29.89 in 10.0 mi SSW 5.8 mph - N/A   Clear
2:06 AM 62.6 °F - 57.2 °F 82% 29.91 in 10.0 mi SSW 6.9 mph - N/A   Partly Cloudy
2:54 AM 59.0 °F - 55.9 °F 90% 29.89 in 10.0 mi Calm Calm - N/A   Clear
3:54 AM 57.9 °F - 55.9 °F 93% 29.89 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:54 AM 55.0 °F - 53.1 °F 93% 29.88 in 3.0 mi Calm Calm - N/A   Clear
4:57 AM 53.6 °F - 53.6 °F 100% 29.91 in 1.0 mi Calm Calm - N/A   Mist
5:07 AM 53.6 °F - 53.6 °F 100% 29.91 in 2.0 mi Calm Calm - N/A   Partly Cloudy
5:17 AM 55.4 °F - 53.6 °F 94% 29.91 in 1.0 mi Calm Calm - N/A   Mist
5:26 AM 55.4 °F - 53.6 °F 94% 29.91 in 3.0 mi Calm Calm - N/A   Partly Cloudy
5:40 AM 53.6 °F - 51.8 °F 94% 29.91 in 1.5 mi Calm Calm - N/A   Scattered Clouds
5:45 AM 53.6 °F - 51.8 °F 94% 29.91 in 0.8 mi Calm Calm - N/A   Mist
5:54 AM 53.1 °F - 52.0 °F 96% 29.89 in 1.0 mi Calm Calm - N/A   Mist
6:02 AM 53.6 °F - 51.8 °F 94% 29.91 in 2.0 mi Calm Calm - N/A   Partly Cloudy
6:10 AM 51.8 °F - 51.8 °F 100% 29.92 in 5.0 mi Calm Calm - N/A   Clear
6:23 AM 51.8 °F - 51.8 °F 100% 29.92 in 1.8 mi Calm Calm - N/A   Clear
6:42 AM 53.6 °F - 53.6 °F 100% 29.93 in 4.0 mi Calm Calm - N/A   Clear
6:54 AM 55.9 °F - 55.0 °F 97% 29.91 in 10.0 mi NW 3.5 mph - N/A   Scattered Clouds
7:54 AM 60.1 °F - 57.9 °F 93% 29.92 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:54 AM 66.0 °F - 60.1 °F 81% 29.93 in 10.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
9:54 AM 70.0 °F - 60.1 °F 71% 29.93 in 10.0 mi SSW 8.1 mph - N/A   Scattered Clouds
10:54 AM 73.9 °F - 61.0 °F 64% 29.93 in 10.0 mi South 9.2 mph - N/A   Clear
11:54 AM 75.9 °F - 61.0 °F 60% 29.92 in 10.0 mi SSW 11.5 mph - N/A   Clear
12:54 PM 80.1 °F 81.1 °F 61.0 °F 52% 29.91 in 10.0 mi SSW 10.4 mph - N/A   Clear
1:54 PM 82.9 °F 83.7 °F 62.1 °F 49% 29.91 in 10.0 mi SSW 13.8 mph - N/A   Clear
2:54 PM 82.9 °F 84.0 °F 63.0 °F 51% 29.90 in 10.0 mi SSW 15.0 mph - N/A   Clear
3:54 PM 84.9 °F 86.1 °F 64.0 °F 49% 29.88 in 10.0 mi SSW 13.8 mph - N/A   Clear
4:11 PM 87.8 °F 88.5 °F 62.6 °F 43% 29.90 in 10.0 mi West 13.8 mph - N/A   Clear
4:54 PM 86.0 °F 86.3 °F 62.1 °F 44% 29.88 in 10.0 mi WSW 16.1 mph 20.7 mph N/A   Clear
5:54 PM 82.9 °F 83.7 °F 62.1 °F 49% 29.87 in 10.0 mi West 15.0 mph - N/A   Clear
6:54 PM 77.0 °F - 62.1 °F 60% 29.87 in 10.0 mi West 15.0 mph - N/A   Clear
7:54 PM 73.0 °F - 62.1 °F 68% 29.88 in 10.0 mi WSW 15.0 mph - N/A   Clear
8:54 PM 70.0 °F - 62.1 °F 76% 29.89 in 10.0 mi West 11.5 mph - N/A   Clear
10:54 PM 66.0 °F - 62.1 °F 87% 29.91 in 10.0 mi SW 16.1 mph - N/A   Clear
11:54 PM 64.9 °F - 61.0 °F 87% 29.92 in 10.0 mi SW 10.4 mph - N/A   Clear