Weather History for Napa County, CA

Change the Weather History Date:

Friday, December 7, 2012

  Actual Average Record
Temperature  
Mean Temperature 49 °F 46 °F  
Max Temperature 60 °F 57 °F 70 °F (2001)
Min Temperature 37 °F 36 °F 22 °F (2009)
Degree Days  
Heating Degree Days 16    
Month to date heating degree days 78  
Since 1 July heating degree days 650  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 204  
Moisture  
Dew Point 42 °F    
Average Humidity 78    
Maximum Humidity 100    
Minimum Humidity 55    
Precipitation  
Precipitation 0.00 in - 1.75 in (1952)
Month to date precipitation 1.72  
Year to date precipitation 19.10  
Since 1 July precipitation 5.33  
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 1 mph (North)    
Max Wind Speed 8 mph    
Max Gust Speed 8 mph    
Visibility 5 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Dec. 07, 2012 Rise Set
Actual Time 7:12 AM PST 4:48 PM PST
Civil Twilight 6:43 AM PST 5:18 PM PST
Nautical Twilight 6:10 AM PST 5:51 PM PST
Astronomical Twilight 5:38 AM PST 6:23 PM PST
Moon 12:42 AM PST (12/7) 12:44 PM PST (12/7)
Length of Visible Light 10h 34m
Length of Day
9h 35m
Last Quarter, 37% of the Moon is Illuminated
Dec 7
Last Quarter
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:01 AM 44.6 °F 40.2 °F 42.8 °F 93% 30.13 in 9.0 mi North 8.1 mph - N/A   Partly Cloudy
12:54 AM 44.1 °F - 43.0 °F 96% 30.10 in 10.0 mi Calm Calm - N/A   Clear
1:06 AM 42.8 °F - 41.0 °F 93% 30.12 in 1.5 mi Calm Calm - N/A   Partly Cloudy
1:17 AM 44.6 °F - 42.8 °F 93% 30.13 in 4.0 mi Calm Calm - N/A   Partly Cloudy
1:36 AM 44.6 °F - 42.8 °F 93% 30.13 in 1.5 mi Calm Calm - N/A   Partly Cloudy
1:38 AM 44.6 °F - 42.8 °F 93% 30.13 in 0.8 mi Calm Calm - N/A   Mist
1:45 AM 42.8 °F - 41.0 °F 93% 30.13 in 0.2 mi Calm Calm - N/A Fog Fog
1:54 AM 39.0 °F - 37.9 °F 96% 30.11 in 0.8 mi Calm Calm - N/A   Mist
2:01 AM 39.2 °F 37.0 °F 37.4 °F 93% 30.13 in 0.2 mi ESE 3.5 mph - N/A Fog Fog
2:36 AM 42.8 °F - 41.0 °F 93% 30.13 in 1.0 mi Calm Calm - N/A   Mist
2:39 AM 42.8 °F - 41.0 °F 93% 30.13 in 2.0 mi Calm Calm - N/A   Partly Cloudy
2:54 AM 39.0 °F - 37.0 °F 93% 30.10 in 0.5 mi Calm Calm - N/A Fog Fog
3:54 AM 39.0 °F - 37.9 °F 96% 30.09 in 0.2 mi Calm Calm - N/A Fog Fog
4:54 AM 39.9 °F - 39.0 °F 97% 30.09 in 0.2 mi Calm Calm - N/A Fog Fog
5:54 AM 39.0 °F - 39.0 °F 100% 30.09 in 0.2 mi Calm Calm - N/A Fog Fog
6:54 AM 37.9 °F - 36.0 °F 93% 30.10 in 0.2 mi Calm Calm - N/A Fog Fog
7:54 AM 39.9 °F - 39.0 °F 97% 30.12 in 0.2 mi Calm Calm - N/A Fog Fog
8:35 AM 42.8 °F - 41.0 °F 93% 30.15 in 1.0 mi Calm Calm - N/A   Mist
8:42 AM 42.8 °F - 42.8 °F 100% 30.15 in 0.5 mi Calm Calm - N/A Fog Fog
8:49 AM 44.6 °F 43.1 °F 42.8 °F 93% 30.15 in 1.0 mi NNW 3.5 mph - N/A   Mostly Cloudy
8:54 AM 45.0 °F 43.5 °F 43.0 °F 93% 30.13 in 3.0 mi NNW 3.5 mph - N/A   Mostly Cloudy
9:01 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.15 in 10.0 mi North 3.5 mph - N/A   Partly Cloudy
9:54 AM 48.9 °F - 45.0 °F 86% 30.14 in 10.0 mi North 4.6 mph - N/A   Clear
10:54 AM 53.1 °F - 45.0 °F 74% 30.13 in 10.0 mi Calm Calm - N/A   Clear
11:54 AM 53.1 °F - 48.0 °F 83% 30.11 in 10.0 mi WSW 3.5 mph - N/A   Clear
12:54 PM 57.9 °F - 48.0 °F 70% 30.08 in 10.0 mi Calm Calm - N/A   Clear
1:54 PM 59.0 °F - 46.0 °F 62% 30.06 in 10.0 mi SW 4.6 mph - N/A   Clear
2:54 PM 60.1 °F - 44.1 °F 55% 30.05 in 10.0 mi Calm Calm - N/A   Clear
3:54 PM 60.1 °F - 46.9 °F 62% 30.05 in 10.0 mi Calm Calm - N/A   Clear
5:54 PM 53.1 °F - 45.0 °F 74% 30.05 in 10.0 mi Calm Calm - N/A   Clear
6:54 PM 46.9 °F - 43.0 °F 86% 30.05 in 10.0 mi Calm Calm - N/A   Clear
7:54 PM 46.9 °F - 44.1 °F 90% 30.05 in 10.0 mi ESE 3.5 mph - N/A   Clear
8:54 PM 45.0 °F - 43.0 °F 93% 30.06 in 10.0 mi Calm Calm - N/A   Clear
9:54 PM 43.0 °F - 41.0 °F 93% 30.06 in 10.0 mi Calm Calm - N/A   Clear
10:21 PM 39.2 °F - 39.2 °F 100% 30.08 in 1.8 mi Calm Calm - N/A   Clear
10:33 PM 39.2 °F - 37.4 °F 93% 30.09 in 0.8 mi Calm Calm - N/A   Clear
10:42 PM 39.2 °F - 39.2 °F 100% 30.09 in 2.0 mi Calm Calm - N/A   Clear
10:54 PM 42.1 °F 39.2 °F 39.9 °F 92% 30.07 in 2.0 mi NNE 4.6 mph - N/A   Clear
11:02 PM 42.8 °F - 41.0 °F 93% 30.09 in 10.0 mi Calm Calm - N/A   Clear