Weather History for Napa County, CA

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Week of December 30, 2012 through January 5, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 58 °F 55 °F 49 °F
Mean Temperature 45 °F 42 °F 40 °F
Min Temperature 32 °F 30 °F 27 °F
Degree Days  
Heating Degree Days (base 65) 25 23 20 158
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 43 °F 33 °F 24 °F
Precipitation  
Precipitation 0.15 in 0.02 in 0.00 in 0.15 in
Snowdepth - - - -
Wind  
Wind 18 mph 5 mph 0 mph
Gust Wind 23 mph 18 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.28 in 30.18 in 30.04 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Jan. 03, 2013 Rise Set
Actual Time 7:26 AM PST 5:01 PM PST
Civil Twilight 6:56 AM PST 5:31 PM PST
Nautical Twilight 6:23 AM PST 6:04 PM PST
Astronomical Twilight 5:51 AM PST 6:36 PM PST
Moon 11:36 PM PST (1/3) 10:46 AM PST (1/3)
Length of Visible Light 10h 34m
Length of Day
9h 35m
Waning Gibbous, 64% of the Moon is Illuminated
Jan 3
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
30 58 45 32 40 33 28 96 66 36 30.14 30.07 30.04 10 10 10 14 3 23 0.00  
31 52 40 27 38 29 25 82 62 41 30.28 30.22 30.17 10 10 10 10 4 10 0.00  
2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 57 44 31 37 32 27 85 58 30 30.27 30.23 30.19 10 10 9 16 6 21 T Snow
2 55 42 28 34 30 24 92 68 43 30.23 30.18 30.12 10 10 10 15 6 20 0.00 Snow
3 55 41 27 38 32 25 92 71 50 30.26 30.21 30.16 10 10 9 16 4 20 0.00 Snow
4 57 44 30 38 34 30 89 68 47 30.28 30.22 30.17 10 10 10 13 5 15 0.00  
5 49 41 32 43 39 31 96 81 65 30.26 30.16 30.06 10 6 2 18 8 23 0.15 Rain