Napa County, CA

9:20 PM PDT on August 23, 2017 (GMT -0700)
Napa County

Weather History for KAPC - December, 2012

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Saturday, December 22, 2012

  Actual Average Record
Temperature  
Mean Temperature 52 °F 45 °F  
Max Temperature 58 °F 55 °F 68 °F (1999)
Min Temperature 45 °F 36 °F 19 °F (1998)
Degree Days  
Heating Degree Days 13    
Month to date heating degree days 357  
Since 1 July heating degree days 929  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 204  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 75    
Maximum Humidity 93    
Minimum Humidity 57    
Precipitation  
Precipitation 0.81 in - 3.45 in (1955)
Month to date precipitation 2.83  
Year to date precipitation 20.21  
Since 1 July precipitation 6.44  
Sea Level Pressure  
Sea Level Pressure 29.90 in    
Wind  
Wind Speed 8 mph (SSW)    
Max Wind Speed 26 mph    
Max Gust Speed 36 mph    
Visibility 7 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 22, 2012 Rise Set
Actual Time 7:22 AM PST 4:53 PM PST
Civil Twilight 6:53 AM PST 5:22 PM PST
Nautical Twilight 6:20 AM PST 5:56 PM PST
Astronomical Twilight 5:47 AM PST 6:28 PM PST
Moon 1:11 PM PST (12/22) 2:16 AM PST (12/22)
Length of Visible Light 10h 29m
Length of Day
9h 30m
Waxing Gibbous, 74% of the Moon is Illuminated
Dec 22
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:24 AM 53.6 °F 50.0 °F 88% 29.83 in 10.0 mi ESE 10.4 mph - 0.02 in Rain Light Rain
12:54 AM 53.1 °F 50.0 °F 89% 29.82 in 7.0 mi SW 11.5 mph 17.3 mph 0.03 in Rain Light Rain
1:49 AM 55.4 °F 48.2 °F 77% 29.84 in 10.0 mi South 13.8 mph - 0.00 in   Mostly Cloudy
1:54 AM 54.0 °F 48.9 °F 83% 29.82 in 10.0 mi South 11.5 mph 20.7 mph 0.00 in   Overcast
2:49 AM 55.4 °F 50.0 °F 82% 29.83 in 10.0 mi South 10.4 mph - 0.00 in   Mostly Cloudy
2:54 AM 55.0 °F 48.9 °F 80% 29.81 in 10.0 mi South 11.5 mph - 0.00 in   Mostly Cloudy
3:12 AM 53.6 °F 50.0 °F 88% 29.85 in 8.0 mi SSW 10.4 mph - 0.00 in Rain , Thunderstorm Light Rain
3:26 AM 51.8 °F 48.2 °F 88% 29.86 in 2.5 mi SW 23.0 mph 34.5 mph 0.12 in Rain Heavy Rain
3:34 AM 50.0 °F 46.4 °F 87% 29.86 in 1.8 mi SSW 18.4 mph 31.1 mph 0.20 in Rain Rain
3:38 AM 50.0 °F 46.4 °F 87% 29.85 in 3.0 mi SSW 13.8 mph 26.5 mph 0.21 in Rain Rain
3:49 AM 51.8 °F 48.2 °F 88% 29.85 in 4.0 mi SSW 13.8 mph - 0.25 in Rain , Thunderstorm Thunderstorms and Rain
3:54 AM 50.0 °F 48.0 °F 93% 29.83 in 4.0 mi SSW 12.7 mph - 0.27 in Rain , Thunderstorm Thunderstorms and Rain
4:04 AM 50.0 °F 48.2 °F 94% 29.85 in 5.0 mi SSW 10.4 mph - 0.03 in Rain Rain
4:44 AM 51.8 °F 48.2 °F 88% 29.84 in 2.0 mi SW 5.8 mph - 0.12 in Rain Heavy Rain
4:54 AM 51.1 °F 48.9 °F 92% 29.81 in 1.8 mi SW 6.9 mph - 0.20 in Rain Heavy Rain
5:00 AM 51.8 °F 48.2 °F 88% 29.84 in 3.0 mi SW 6.9 mph - 0.00 in Rain Light Rain
5:10 AM 51.8 °F 48.2 °F 88% 29.84 in 2.5 mi SW 5.8 mph - 0.06 in Rain Heavy Rain
5:26 AM 51.8 °F 48.2 °F 88% 29.85 in 5.0 mi WSW 5.8 mph - 0.10 in Rain Light Rain
5:54 AM 50.0 °F 48.0 °F 93% 29.83 in 6.0 mi WSW 4.6 mph - 0.12 in Rain Light Rain
6:47 AM 50.0 °F 44.6 °F 82% 29.88 in 3.0 mi West 15.0 mph 28.8 mph 0.08 in Rain Heavy Rain
6:54 AM 48.9 °F 45.0 °F 86% 29.86 in 5.0 mi West 13.8 mph - 0.09 in Rain Rain
7:54 AM 48.9 °F 45.0 °F 86% 29.86 in 10.0 mi South 8.1 mph - 0.03 in Rain Light Rain
8:54 AM 50.0 °F 46.0 °F 86% 29.88 in 10.0 mi South 9.2 mph - N/A   Overcast
9:54 AM 53.1 °F 48.0 °F 83% 29.92 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
10:54 AM 55.0 °F 48.0 °F 77% 29.93 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy
11:54 AM 55.0 °F 46.0 °F 72% 29.92 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy
12:01 PM 55.4 °F 46.4 °F 72% 29.94 in 10.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
12:54 PM 57.0 °F 42.1 °F 57% 29.91 in 10.0 mi SW 15.0 mph - N/A   Mostly Cloudy
1:54 PM 55.9 °F 45.0 °F 67% 29.91 in 10.0 mi SW 11.5 mph - N/A   Mostly Cloudy
2:54 PM 55.0 °F 45.0 °F 69% 29.92 in 10.0 mi SW 12.7 mph - N/A   Overcast
3:54 PM 50.0 °F 43.0 °F 77% 29.95 in 7.0 mi SW 18.4 mph 31.1 mph 0.00 in Rain Light Rain
4:54 PM 48.9 °F 43.0 °F 80% 29.96 in 10.0 mi South 5.8 mph - 0.02 in   Scattered Clouds
5:54 PM 48.0 °F 43.0 °F 83% 29.97 in 10.0 mi South 5.8 mph - N/A   Clear
6:54 PM 46.9 °F 43.0 °F 86% 29.99 in 10.0 mi East 4.6 mph - N/A   Clear
7:54 PM 48.0 °F 45.0 °F 89% 30.00 in 10.0 mi Calm Calm - 0.00 in   Overcast
8:54 PM 50.0 °F 46.0 °F 86% 30.01 in 10.0 mi SSE 5.8 mph - N/A   Overcast
9:54 PM 51.1 °F 46.9 °F 86% 30.03 in 10.0 mi East 3.5 mph - 0.00 in Rain Light Rain
10:54 PM 48.9 °F 46.9 °F 93% 30.04 in 10.0 mi Calm Calm - 0.00 in   Overcast
11:32 PM 48.2 °F 46.4 °F 93% 30.08 in 6.0 mi West 4.6 mph - 0.02 in Rain Light Rain
11:54 PM 50.0 °F 46.9 °F 89% 30.06 in 3.0 mi Calm Calm - 0.04 in Rain Rain