Weather History for Napa County, CA

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Sunday, May 12, 2013

  Actual Average Record
Temperature  
Mean Temperature 64 °F 58 °F  
Max Temperature 82 °F 72 °F 84 °F (2014)
Min Temperature 45 °F 45 °F 37 °F (2000)
Degree Days  
Heating Degree Days 1    
Month to date heating degree days 28  
Since 1 July heating degree days 2772  
Cooling Degree Days 0    
Month to date cooling degree days 9  
Year to date cooling degree days 12  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 65    
Maximum Humidity 93    
Minimum Humidity 36    
Precipitation  
Precipitation 0.00 in - 0.68 in (1925)
Month to date precipitation 0.05  
Year to date precipitation 1.75  
Since 1 July precipitation 9.54  
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 7 mph (SW)    
Max Wind Speed 22 mph    
Max Gust Speed 28 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 12, 2013 Rise Set
Actual Time 6:00 AM PDT 8:10 PM PDT
Civil Twilight 5:31 AM PDT 8:40 PM PDT
Nautical Twilight 4:55 AM PDT 9:16 PM PDT
Astronomical Twilight 4:16 AM PDT 9:55 PM PDT
Moon 8:00 AM PDT (5/12) 10:41 PM PDT (5/12)
Length of Visible Light 15h 09m
Length of Day
14h 10m
Waxing Crescent, 7% of the Moon is Illuminated
May 12
Waxing Crescent
May 17
First Quarter
May 24
Full
May 31
Last Quarter
Jun 8
New

Hourly Weather History & Observations

Time (PDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:25 AM 51.8 °F - 48.2 °F 88% 30.12 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:54 AM 51.1 °F - 46.9 °F 86% 30.10 in 10.0 mi SSW 3.5 mph - N/A   Clear
1:54 AM 51.1 °F - 48.0 °F 89% 30.09 in 10.0 mi Calm Calm - N/A   Clear
2:54 AM 51.1 °F - 48.9 °F 92% 30.09 in 10.0 mi Calm Calm - N/A   Clear
3:17 AM 48.2 °F - 46.4 °F 93% 30.11 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:54 AM 48.0 °F - 45.0 °F 89% 30.09 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:45 AM 46.4 °F - 44.6 °F 93% 30.11 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
4:54 AM 46.0 °F - 44.1 °F 93% 30.08 in 7.0 mi Calm Calm - N/A   Overcast
5:21 AM 46.4 °F - 44.6 °F 93% 30.11 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:26 AM 44.6 °F - 44.6 °F 100% 30.11 in 1.8 mi Calm Calm - N/A   Scattered Clouds
5:41 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.11 in 2.5 mi NW 3.5 mph - N/A   Mostly Cloudy
5:51 AM 48.2 °F - 46.4 °F 93% 30.12 in 8.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
5:54 AM 48.9 °F - 46.9 °F 93% 30.09 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
6:54 AM 50.0 °F - 48.0 °F 93% 30.11 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:54 AM 55.0 °F - 51.1 °F 86% 30.12 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:02 AM 55.4 °F - 51.8 °F 88% 30.14 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:51 AM 57.2 °F - 51.8 °F 82% 30.15 in 10.0 mi WSW 5.8 mph - N/A   Scattered Clouds
8:54 AM 57.9 °F - 51.1 °F 78% 30.12 in 10.0 mi SW 4.6 mph - N/A   Partly Cloudy
9:54 AM 62.1 °F - 53.1 °F 72% 30.12 in 10.0 mi SW 4.6 mph - N/A   Clear
10:54 AM 66.9 °F - 55.0 °F 66% 30.12 in 10.0 mi SW 5.8 mph - N/A   Clear
11:54 AM 73.0 °F - 57.0 °F 57% 30.10 in 10.0 mi South 8.1 mph - N/A   Clear
12:54 PM 75.9 °F - 57.9 °F 54% 30.09 in 10.0 mi SSW 12.7 mph - N/A   Clear
1:54 PM 79.0 °F - 59.0 °F 50% 30.08 in 10.0 mi SSW 12.7 mph - N/A   Clear
2:54 PM 81.0 °F - 57.9 °F 45% 30.05 in 10.0 mi SW 17.3 mph - N/A   Clear
3:54 PM 81.0 °F - 55.9 °F 42% 30.03 in 10.0 mi SW 15.0 mph - N/A   Clear
4:54 PM 78.1 °F - 50.0 °F 37% 30.02 in 10.0 mi SW 18.4 mph - N/A   Clear
5:54 PM 75.9 °F - 46.9 °F 36% 30.01 in 10.0 mi SW 18.4 mph - N/A   Clear
6:54 PM 72.0 °F - 48.0 °F 43% 30.00 in 10.0 mi SW 10.4 mph - N/A   Clear
7:54 PM 64.9 °F - 50.0 °F 58% 30.00 in 10.0 mi SSW 9.2 mph - N/A   Clear
8:54 PM 62.1 °F - 48.9 °F 62% 30.00 in 10.0 mi SSW 11.5 mph - N/A   Clear
9:54 PM 57.9 °F - 48.9 °F 72% 30.01 in 10.0 mi SSW 5.8 mph - N/A   Clear
10:54 PM 57.0 °F - 50.0 °F 77% 30.02 in 10.0 mi WSW 10.4 mph - N/A   Clear
11:54 PM 55.9 °F - 48.9 °F 77% 30.01 in 10.0 mi WSW 5.8 mph - N/A   Clear