Weather History for Napa County, CA

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Saturday, April 28, 2012

  Actual Average Record
Temperature  
Mean Temperature 60 °F 56 °F  
Max Temperature 75 °F 70 °F 82 °F (2008)
Min Temperature 44 °F 43 °F 32 °F (1970)
Degree Days  
Heating Degree Days 5    
Month to date heating degree days 255  
Since 1 July heating degree days 2943  
Cooling Degree Days 0    
Month to date cooling degree days 7  
Year to date cooling degree days 7  
Growing Degree Days 9 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 71    
Maximum Humidity 93    
Minimum Humidity 49    
Precipitation  
Precipitation 0.00 in - 0.90 in (1954)
Month to date precipitation 1.72  
Year to date precipitation 13.69  
Since 1 July precipitation 17.27  
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 6 mph (SW)    
Max Wind Speed 17 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Apr. 28, 2012 Rise Set
Actual Time 6:15 AM PDT 7:58 PM PDT
Civil Twilight 5:47 AM PDT 8:26 PM PDT
Nautical Twilight 5:13 AM PDT 9:00 PM PDT
Astronomical Twilight 4:36 AM PDT 9:37 PM PDT
Moon 12:01 PM PDT (4/28) 1:25 AM PDT (4/28)
Length of Visible Light 14h 39m
Length of Day
13h 42m
Waxing Crescent, 44% of the Moon is Illuminated
Apr 28
Waxing Crescent
Apr 29
First Quarter
May 5
Full
May 12
Last Quarter
May 20
New

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 48.9 °F 46.0 °F 90% 30.11 in 10.0 mi Calm Calm - N/A   Clear
1:54 AM 48.9 °F 46.0 °F 90% 30.10 in 10.0 mi NNW 3.5 mph - N/A   Clear
2:54 AM 46.0 °F 44.1 °F 93% 30.09 in 10.0 mi Calm Calm - N/A   Clear
3:54 AM 48.0 °F 46.0 °F 93% 30.09 in 10.0 mi West 3.5 mph - N/A   Clear
4:54 AM 46.0 °F 43.0 °F 89% 30.08 in 10.0 mi Calm Calm - N/A   Clear
5:54 AM 45.0 °F 42.1 °F 90% 30.06 in 10.0 mi Calm Calm - N/A   Clear
6:54 AM 46.9 °F 45.0 °F 93% 30.06 in 10.0 mi Calm Calm - N/A   Clear
7:54 AM 53.1 °F 48.9 °F 86% 30.06 in 10.0 mi Calm Calm - N/A   Clear
8:54 AM 57.0 °F 46.9 °F 69% 30.05 in 10.0 mi WSW 4.6 mph - N/A   Clear
9:54 AM 60.1 °F 48.0 °F 64% 30.04 in 10.0 mi Calm Calm - N/A   Clear
10:54 AM 66.0 °F 48.9 °F 54% 30.03 in 10.0 mi Variable 3.5 mph - N/A   Clear
11:54 AM 69.1 °F 50.0 °F 51% 30.01 in 10.0 mi WSW 5.8 mph - N/A   Clear
12:54 PM 73.0 °F 53.1 °F 49% 29.97 in 10.0 mi SW 9.2 mph - N/A   Clear
1:54 PM 73.0 °F 55.0 °F 53% 29.95 in 10.0 mi SW 11.5 mph - N/A   Clear
2:54 PM 73.0 °F 55.9 °F 55% 29.92 in 10.0 mi SSW 13.8 mph - N/A   Clear
3:54 PM 73.9 °F 57.9 °F 57% 29.90 in 10.0 mi SW 10.4 mph - N/A   Clear
4:54 PM 73.9 °F 55.0 °F 52% 29.88 in 10.0 mi SW 11.5 mph - N/A   Clear
5:54 PM 72.0 °F 54.0 °F 53% 29.87 in 10.0 mi WSW 10.4 mph - N/A   Clear
6:54 PM 68.0 °F 55.0 °F 63% 29.86 in 10.0 mi SW 9.2 mph - N/A   Clear
7:54 PM 63.0 °F 53.1 °F 70% 29.86 in 10.0 mi SSW 10.4 mph - N/A   Clear
8:54 PM 60.1 °F 52.0 °F 75% 29.87 in 10.0 mi SSW 8.1 mph - N/A   Clear
9:54 PM 57.9 °F 52.0 °F 81% 29.88 in 10.0 mi SSW 6.9 mph - N/A   Clear
10:54 PM 57.0 °F 51.1 °F 81% 29.88 in 10.0 mi SSW 6.9 mph - N/A   Clear
11:54 PM 55.9 °F 50.0 °F 80% 29.87 in 10.0 mi SW 6.9 mph - N/A   Clear