Weather History for Santa Rosa, CA

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Thursday, December 22, 2011

  Actual Average Record
Temperature  
Mean Temperature 48 °F 46 °F  
Max Temperature 66 °F 56 °F 70 °F (1999)
Min Temperature 30 °F 36 °F 21 °F (1998)
Degree Days  
Heating Degree Days 17    
Month to date heating degree days 391  
Since 1 July heating degree days 976  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 345  
Moisture  
Dew Point 13 °F    
Average Humidity 41    
Maximum Humidity 72    
Minimum Humidity 10    
Precipitation  
Precipitation 0.00 in 0.28 in 1.09 in (2005)
Month to date precipitation 0.19 4.63  
Year to date precipitation 26.89 33.88  
Since 1 July precipitation 4.45 11.79  
Sea Level Pressure  
Sea Level Pressure 30.30 in    
Wind  
Wind Speed 7 mph (North)    
Max Wind Speed 30 mph    
Max Gust Speed 38 mph    
Visibility 10 miles    
Events      
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, 2011 Rise Set
Actual Time 7:25 AM PST 4:54 PM PST
Civil Twilight 6:55 AM PST 5:23 PM PST
Nautical Twilight 6:22 AM PST 5:57 PM PST
Astronomical Twilight 5:50 AM PST 6:29 PM PST
Moon 5:15 AM PST (12/22) 3:09 PM PST (12/22)
Length of Visible Light 10h 28m
Length of Day
9h 28m
Waning Crescent, 5% of the Moon is Illuminated
Dec 22
Waning Crescent
Dec 24
New
Dec 31
First Quarter
Jan 8
Full
Jan 16
Last Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 54.0 °F - 3.0 °F 13% 30.17 in 10.0 mi South 3.5 mph 18.4 mph N/A   Clear
1:53 AM 54.0 °F - 5.0 °F 14% 30.20 in 10.0 mi North 20.7 mph - N/A   Clear
2:53 AM 55.0 °F - 1.9 °F 12% 30.21 in 10.0 mi North 21.9 mph 28.8 mph N/A   Clear
3:53 AM 54.0 °F - 3.0 °F 13% 30.21 in 10.0 mi NNE 17.3 mph - N/A   Clear
4:53 AM 53.1 °F - 1.9 °F 12% 30.22 in 10.0 mi North 15.0 mph 24.2 mph N/A   Clear
5:53 AM 54.0 °F - -0.0 °F 11% 30.22 in 10.0 mi NE 20.7 mph 27.6 mph N/A   Clear
6:53 AM 52.0 °F - -0.0 °F 12% 30.24 in 10.0 mi NE 8.1 mph 21.9 mph N/A   Clear
7:53 AM 41.0 °F - 15.1 °F 35% 30.25 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 50.0 °F - 15.1 °F 25% 30.27 in 10.0 mi North 6.9 mph - N/A   Partly Cloudy
9:53 AM 51.1 °F - 18.0 °F 27% 30.29 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
10:53 AM 57.0 °F - 23.0 °F 27% 30.30 in 10.0 mi NNW 5.8 mph - N/A   Scattered Clouds
11:53 AM 64.0 °F - 8.1 °F 11% 30.29 in 10.0 mi North 3.5 mph - N/A   Partly Cloudy
1:53 PM 66.0 °F - 12.9 °F 13% 30.27 in 10.0 mi NNE 6.9 mph - N/A   Scattered Clouds
2:53 PM 66.0 °F - 14.0 °F 13% 30.28 in 10.0 mi NNE 3.5 mph - N/A   Scattered Clouds
4:53 PM 57.0 °F - 9.0 °F 15% 30.31 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:53 PM 46.0 °F 44.8 °F 16.0 °F 30% 30.35 in 10.0 mi SW 3.5 mph - N/A   Clear
6:53 PM 44.1 °F 41.5 °F 18.0 °F 35% 30.37 in 10.0 mi WSW 4.6 mph - N/A   Clear
7:53 PM 37.9 °F - 23.0 °F 55% 30.39 in 10.0 mi Calm Calm - N/A   Clear
8:53 PM 34.0 °F 31.0 °F 24.1 °F 67% 30.41 in 10.0 mi NW 3.5 mph - N/A   Clear
9:53 PM 33.1 °F 30.0 °F 23.0 °F 66% 30.43 in 10.0 mi NNW 3.5 mph - N/A   Clear
10:53 PM 30.9 °F 27.5 °F 23.0 °F 72% 30.46 in 10.0 mi NNW 3.5 mph - N/A   Clear
11:53 PM 30.0 °F - 23.0 °F 75% 30.47 in 10.0 mi Calm Calm - N/A   Clear