Santa Rosa, CA

9:14 PM PST on December 15, 2019 (GMT -0800)
Sonoma County

Weather History for KSTS - September, 2019

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Sunday, September 15, 2019

  Actual Average Record
Temperature  
Mean Temperature 66 °F 67 °F  
Max Temperature 83 °F 84 °F 97 °F (2004)
Min Temperature 48 °F 50 °F 44 °F (2006)
Degree Days  
Heating Degree Days 0    
Month to date heating degree days 0  
Since 1 July heating degree days 2  
Cooling Degree Days 1    
Month to date cooling degree days 77  
Year to date cooling degree days 490  
Growing Degree Days 15 (Base 50)    
Moisture  
Dew Point 53 °F    
Average Humidity 70    
Maximum Humidity 100    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.00 in 0.01 in (2010)
Month to date precipitation 0.00 0.10  
Year to date precipitation 38.39 22.28  
Sea Level Pressure  
Sea Level Pressure 29.85 in    
Wind  
Wind Speed 6 mph (SW)    
Max Wind Speed 16 mph    
Max Gust Speed 21 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

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Astronomy

Sep. 15, 2019 Rise Set
Actual Time 6:52 AM PDT 7:19 PM PDT
Civil Twilight 6:26 AM PDT 7:46 PM PDT
Nautical Twilight 5:54 AM PDT 8:17 PM PDT
Astronomical Twilight 5:22 AM PDT 8:49 PM PDT
Moon 8:30 PM PDT (9/15) 8:07 AM PDT (9/15)
Length of Visible Light 13h 20m
Length of Day
12h 26m
Full, 98% of the Moon is Illuminated
Sep 15
Full
Sep 21
Last Quarter
Sep 28
New
Oct 5
First Quarter
Oct 13
Full

Hourly Weather History & Observations

Time (PDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 53.1 °F - 51.1 °F 93% 29.87 in 9.0 mi Calm Calm - N/A   Clear
1:53 AM 53.1 °F - 52.0 °F 96% 29.86 in 8.0 mi Calm Calm - N/A   Clear
2:53 AM 50.0 °F - 50.0 °F 100% 29.86 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
2:55 AM 50.0 °F - 50.0 °F 100% 29.88 in 1.8 mi Calm Calm - N/A   Mostly Cloudy
3:00 AM 50.0 °F - 50.0 °F 100% 29.88 in 0.8 mi Calm Calm - N/A   Mist
3:09 AM 48.9 °F - 48.9 °F 100% 29.87 in 1.8 mi Calm Calm - N/A   Overcast
3:22 AM 50.0 °F - 50.0 °F 100% 29.87 in 0.2 mi Calm Calm - N/A Fog Fog
3:33 AM 48.9 °F - 48.9 °F 100% 29.87 in 1.2 mi Calm Calm - N/A   Overcast
3:38 AM 48.0 °F - 48.0 °F 100% 29.87 in 3.0 mi Calm Calm - N/A   Overcast
3:46 AM 48.0 °F - 48.0 °F 100% 29.86 in 1.5 mi Calm Calm - N/A   Overcast
3:49 AM 48.2 °F - 48.2 °F 100% 29.87 in 0.8 mi Calm Calm - N/A   Mist
3:53 AM 48.9 °F - 48.9 °F 100% 29.85 in 0.8 mi Calm Calm - N/A   Mist
3:59 AM 48.9 °F - 48.9 °F 100% 29.86 in 2.0 mi Calm Calm - N/A   Overcast
4:05 AM 50.0 °F - 50.0 °F 100% 29.86 in 1.8 mi Calm Calm - N/A   Overcast
4:21 AM 51.1 °F - 51.1 °F 100% 29.86 in 3.0 mi WSW 3.5 mph - N/A   Overcast
4:37 AM 52.0 °F - 52.0 °F 100% 29.86 in 0.5 mi Calm Calm - N/A Fog Fog
4:44 AM 52.0 °F - 52.0 °F 100% 29.86 in 0.2 mi SSE 3.5 mph - N/A Fog Fog
4:53 AM 52.0 °F - 52.0 °F 100% 29.84 in 0.2 mi Calm Calm - N/A Fog Fog
5:53 AM 53.1 °F - 53.1 °F 100% 29.85 in 0.2 mi Calm Calm - N/A Fog Fog
6:19 AM 53.1 °F - 53.1 °F 100% 29.88 in 0.5 mi Calm Calm - N/A Fog Fog
6:53 AM 53.1 °F - 53.1 °F 100% 29.86 in 0.5 mi Calm Calm - N/A Fog Fog
7:53 AM 53.1 °F - 53.1 °F 100% 29.87 in 0.5 mi Calm Calm - N/A Fog Fog
8:00 AM 53.1 °F - 53.1 °F 100% 29.89 in 0.2 mi NE 3.5 mph - N/A Fog Fog
8:14 AM 53.1 °F - 53.1 °F 100% 29.89 in 0.5 mi Calm Calm - N/A Fog Fog
8:24 AM 53.1 °F - 53.1 °F 100% 29.89 in 0.2 mi Calm Calm - N/A Fog Fog
8:53 AM 53.1 °F - 53.1 °F 100% 29.88 in 0.2 mi WNW 3.5 mph - N/A Fog Fog
9:26 AM 54.0 °F - 54.0 °F 100% 29.90 in 0.5 mi Calm Calm - N/A Fog Fog
9:53 AM 54.0 °F - 54.0 °F 100% 29.88 in 3.0 mi Calm Calm - N/A   Overcast
10:20 AM 59.0 °F - 55.0 °F 87% 29.89 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:53 AM 62.1 °F - 55.0 °F 78% 29.87 in 10.0 mi South 5.8 mph - N/A   Partly Cloudy
11:53 AM 69.1 °F - 55.0 °F 61% 29.86 in 10.0 mi SSW 5.8 mph - N/A   Partly Cloudy
12:53 PM 75.9 °F - 55.0 °F 48% 29.85 in 10.0 mi SE 5.8 mph - N/A   Partly Cloudy
1:53 PM 79.0 °F - 55.0 °F 44% 29.82 in 10.0 mi South 6.9 mph - N/A   Partly Cloudy
2:53 PM 81.0 °F 80.5 °F 54.0 °F 39% 29.78 in 10.0 mi SW 8.1 mph - N/A   Clear
3:53 PM 82.0 °F 81.6 °F 55.9 °F 41% 29.76 in 10.0 mi SW 9.2 mph - N/A   Partly Cloudy
4:53 PM 81.0 °F 81.0 °F 57.0 °F 44% 29.75 in 10.0 mi WSW 13.8 mph - N/A   Scattered Clouds
5:53 PM 78.1 °F - 57.0 °F 48% 29.76 in 10.0 mi West 15.0 mph 20.7 mph N/A   Scattered Clouds
6:53 PM 73.0 °F - 59.0 °F 61% 29.78 in 10.0 mi West 13.8 mph 20.7 mph N/A   Mostly Cloudy
7:53 PM 69.1 °F - 60.1 °F 73% 29.80 in 10.0 mi West 10.4 mph - N/A   Clear
8:53 PM 66.9 °F - 60.1 °F 79% 29.82 in 10.0 mi West 9.2 mph - N/A   Clear
9:53 PM 68.0 °F - 60.1 °F 76% 29.82 in 10.0 mi SW 9.2 mph - N/A   Clear
10:53 PM 66.0 °F - 60.1 °F 81% 29.83 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
11:53 PM 66.9 °F - 61.0 °F 81% 29.82 in 10.0 mi SSW 3.5 mph - N/A   Overcast