Weather History for Napa County, CA

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Wednesday, August 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 66 °F 66 °F  
Max Temperature 77 °F 80 °F 90 °F (2009)
Min Temperature 55 °F 52 °F 47 °F (2001)
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 1    
Month to date cooling degree days 47  
Year to date cooling degree days 195  
Since 1 June cooling degree days 175  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 69    
Maximum Humidity 87    
Minimum Humidity 50    
Precipitation  
Precipitation 0.00 in - 0.30 in (2003)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 12 mph (WSW)    
Max Wind Speed 20 mph    
Max Gust Speed 45 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 21, 2013 Rise Set
Actual Time 6:29 AM PDT 7:54 PM PDT
Civil Twilight 6:01 AM PDT 8:21 PM PDT
Nautical Twilight 5:28 AM PDT 8:54 PM PDT
Astronomical Twilight 4:53 AM PDT 9:29 PM PDT
Moon 8:08 PM PDT (8/21) 7:14 AM PDT (8/21)
Length of Visible Light 14h 20m
Length of Day
13h 24m
Full, 99% of the Moon is Illuminated
Aug 21
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter
Sep 19
Full

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 55.0 °F 87% 29.86 in 10.0 mi West 9.2 mph - N/A   Clear
1:54 AM 59.0 °F 55.0 °F 87% 29.86 in 10.0 mi West 12.7 mph - N/A   Clear
2:54 AM 59.0 °F 55.0 °F 87% 29.86 in 10.0 mi West 9.2 mph - N/A   Clear
3:54 AM 59.0 °F 55.0 °F 87% 29.86 in 10.0 mi West 9.2 mph - N/A   Clear
4:17 AM 59.0 °F 55.4 °F 88% 29.88 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
4:54 AM 59.0 °F 55.0 °F 87% 29.86 in 10.0 mi West 16.1 mph - N/A   Overcast
5:54 AM 59.0 °F 54.0 °F 83% 29.86 in 10.0 mi West 12.7 mph 44.9 mph N/A   Overcast
6:54 AM 59.0 °F 54.0 °F 83% 29.88 in 10.0 mi West 13.8 mph - N/A   Overcast
7:54 AM 59.0 °F 54.0 °F 83% 29.91 in 10.0 mi West 12.7 mph - N/A   Overcast
8:54 AM 60.1 °F 54.0 °F 80% 29.91 in 10.0 mi West 12.7 mph - N/A   Overcast
9:54 AM 62.1 °F 54.0 °F 75% 29.92 in 10.0 mi West 11.5 mph - N/A   Overcast
10:50 AM 64.4 °F 53.6 °F 68% 29.94 in 10.0 mi West 10.4 mph - N/A   Mostly Cloudy
10:54 AM 64.9 °F 54.0 °F 68% 29.92 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
11:21 AM 69.8 °F 53.6 °F 56% 29.94 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
11:54 AM 70.0 °F 54.0 °F 57% 29.91 in 10.0 mi West 9.2 mph 17.3 mph N/A   Clear
12:54 PM 73.0 °F 55.9 °F 55% 29.89 in 10.0 mi SW 8.1 mph - N/A   Clear
1:54 PM 73.0 °F 55.9 °F 55% 29.88 in 10.0 mi South 9.2 mph - N/A   Clear
2:54 PM 75.9 °F 55.9 °F 50% 29.85 in 10.0 mi SSW 12.7 mph - N/A   Clear
3:54 PM 75.9 °F 55.9 °F 50% 29.83 in 10.0 mi SSW 15.0 mph - N/A   Clear
4:54 PM 75.0 °F 55.9 °F 51% 29.82 in 10.0 mi SSW 18.4 mph - N/A   Clear
5:54 PM 73.9 °F 57.0 °F 55% 29.82 in 10.0 mi SSW 13.8 mph - N/A   Clear
6:54 PM 70.0 °F 53.1 °F 55% 29.84 in 10.0 mi West 19.6 mph - N/A   Clear
7:54 PM 64.0 °F 53.1 °F 67% 29.85 in 10.0 mi West 17.3 mph - N/A   Clear
8:54 PM 60.1 °F 53.1 °F 78% 29.87 in 10.0 mi West 15.0 mph - N/A   Clear
9:54 PM 57.9 °F 52.0 °F 81% 29.89 in 10.0 mi West 10.4 mph - N/A   Unknown
10:54 PM 57.9 °F 52.0 °F 81% 29.89 in 10.0 mi West 10.4 mph - N/A   Clear
11:54 PM 55.9 °F 51.1 °F 84% 29.90 in 10.0 mi West 4.6 mph - N/A   Clear