Santa Rosa, CA

7:31 AM PST on February 23, 2018 (GMT -0800)
Sonoma County

Weather History for KSTS - September, 2012

Change the Weather History Date:

Monday, September 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 61 °F 66 °F  
Max Temperature 73 °F 83 °F 98 °F (2000)
Min Temperature 49 °F 49 °F 44 °F (2008)
Degree Days  
Heating Degree Days 4    
Month to date heating degree days 21  
Since 1 July heating degree days 59  
Cooling Degree Days 0    
Month to date cooling degree days 10  
Year to date cooling degree days 282  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 69    
Maximum Humidity 93    
Minimum Humidity 44    
Precipitation  
Precipitation 0.00 in 0.01 in 0.01 in (2014)
Month to date precipitation 0.00 0.12  
Year to date precipitation 18.79 22.30  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 5 mph (South)    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Sep. 17, 2012 Rise Set
Actual Time 6:55 AM PDT 7:15 PM PDT
Civil Twilight 6:28 AM PDT 7:41 PM PDT
Nautical Twilight 5:57 AM PDT 8:12 PM PDT
Astronomical Twilight 5:25 AM PDT 8:44 PM PDT
Moon 8:48 AM PDT (9/17) 8:03 PM PDT (9/17)
Length of Visible Light 13h 13m
Length of Day
12h 20m
Waxing Crescent, 4% of the Moon is Illuminated
Sep 17
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 50.0 °F 46.9 °F 89% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
1:53 AM 50.0 °F 46.9 °F 89% 30.01 in 10.0 mi SSW 4.6 mph - N/A   Overcast
2:53 AM 50.0 °F 46.9 °F 89% 30.01 in 10.0 mi SSW 3.5 mph - N/A   Overcast
3:53 AM 50.0 °F 46.9 °F 89% 30.01 in 9.0 mi Calm Calm - N/A   Overcast
5:53 AM 50.0 °F 46.9 °F 89% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
6:53 AM 50.0 °F 46.9 °F 89% 30.01 in 3.0 mi Calm Calm - N/A   Overcast
7:53 AM 50.0 °F 46.9 °F 89% 30.03 in 3.0 mi Calm Calm - N/A   Overcast
8:53 AM 50.0 °F 46.9 °F 89% 30.04 in 3.0 mi Variable 3.5 mph - N/A   Overcast
9:35 AM 51.8 °F 46.4 °F 82% 30.06 in 3.0 mi SSW 3.5 mph - N/A   Overcast
9:53 AM 51.1 °F 46.9 °F 86% 30.05 in 6.0 mi Calm Calm - N/A   Overcast
10:27 AM 53.6 °F 46.4 °F 77% 30.07 in 6.0 mi SW 5.8 mph - N/A   Haze
10:53 AM 55.0 °F 46.9 °F 74% 30.05 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:16 AM 59.0 °F 48.2 °F 67% 30.07 in 10.0 mi South 6.9 mph - N/A   Partly Cloudy
11:53 AM 62.1 °F 48.0 °F 60% 30.04 in 10.0 mi Variable 3.5 mph - N/A   Clear
12:53 PM 66.9 °F 48.9 °F 52% 30.02 in 10.0 mi SW 6.9 mph - N/A   Clear
1:53 PM 70.0 °F 48.9 °F 47% 30.00 in 10.0 mi South 5.8 mph - N/A   Clear
2:53 PM 71.1 °F 48.9 °F 45% 29.98 in 10.0 mi South 8.1 mph - N/A   Clear
3:53 PM 72.0 °F 48.9 °F 44% 29.96 in 10.0 mi SSE 9.2 mph - N/A   Clear
4:53 PM 69.1 °F 48.9 °F 49% 29.96 in 10.0 mi South 11.5 mph - N/A   Clear
5:53 PM 64.9 °F 46.9 °F 52% 29.96 in 10.0 mi South 12.7 mph - N/A   Clear
6:53 PM 59.0 °F 46.9 °F 64% 29.96 in 10.0 mi South 11.5 mph - N/A   Clear
7:53 PM 53.1 °F 46.9 °F 80% 29.99 in 10.0 mi SSE 10.4 mph - N/A   Clear
8:53 PM 51.1 °F 46.0 °F 83% 30.01 in 10.0 mi SE 8.1 mph - N/A   Clear
9:53 PM 50.0 °F 46.0 °F 86% 30.03 in 10.0 mi SE 4.6 mph - N/A   Clear
10:53 PM 48.9 °F 46.0 °F 90% 30.03 in 10.0 mi SE 4.6 mph - N/A   Mostly Cloudy
11:43 PM 51.8 °F 46.4 °F 82% 30.05 in 10.0 mi Calm Calm - N/A   Overcast
11:53 PM 51.1 °F 46.9 °F 86% 30.04 in 10.0 mi Calm Calm - N/A   Overcast