Petaluma, CA

6:00 PM PST on November 12, 2019 (GMT -0800)
Petaluma

Weather History for KO69 - September, 2019

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Monday, September 30, 2019

  Actual Average (KAPC) Record (KAPC)
Temperature  
Mean Temperature 54 °F -  
Max Temperature 66 °F 83 °F 98 °F (2001)
Min Temperature 42 °F 51 °F 37 °F (2009)
Degree Days  
Heating Degree Days 11    
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 45 °F    
Average Humidity 78    
Maximum Humidity 100    
Minimum Humidity 37    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 4 mph ()    
Max Wind Speed 17 mph    
Max Gust Speed 26 mph    
Visibility 10.0 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: Averaged Metar Reports

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Sep. 30, 2019 Rise Set
Actual Time 7:05 AM PDT 6:55 PM PDT
Civil Twilight 6:38 AM PDT 7:21 PM PDT
Nautical Twilight 6:08 AM PDT 7:51 PM PDT
Astronomical Twilight 5:37 AM PDT 8:22 PM PDT
Moon 9:14 AM PDT (9/30) 8:35 PM PDT (9/30)
Length of Visible Light 12h 42m
Length of Day
11h 49m
Waxing Crescent, 6% of the Moon is Illuminated
Sep 30
Waxing Crescent
Oct 5
First Quarter
Oct 13
Full
Oct 21
Last Quarter
Oct 27
New

Hourly Weather History & Observations

Time (PDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 50.0 °F - 50.0 °F 100% 29.93 in 10.0 mi West 3.5 mph - N/A   Overcast
12:35 AM 50.0 °F - 50.0 °F 100% 29.93 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:55 AM 48.2 °F - 48.2 °F 100% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
1:15 AM 48.2 °F - 48.2 °F 100% 29.94 in 10.0 mi NNW 3.5 mph - N/A   Overcast
1:35 AM 50.0 °F - 50.0 °F 100% 29.94 in 10.0 mi NNW 3.5 mph - N/A   Overcast
1:55 AM 48.2 °F - 48.2 °F 100% 29.94 in 10.0 mi Calm Calm - N/A   Overcast
2:15 AM 48.2 °F - 48.2 °F 100% 29.94 in 10.0 mi Calm Calm - N/A   Overcast
2:35 AM 44.6 °F - 44.6 °F 100% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
2:55 AM 44.6 °F - 44.6 °F 100% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
3:15 AM 44.6 °F - 44.6 °F 100% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
3:35 AM 44.6 °F - 44.6 °F 100% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
3:55 AM 44.6 °F - 44.6 °F 100% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
4:15 AM 46.4 °F - 46.4 °F 100% 29.94 in 10.0 mi Calm Calm - N/A   Overcast
4:35 AM 46.4 °F - 46.4 °F 100% 29.95 in 10.0 mi Calm Calm - N/A   Overcast
4:55 AM 48.2 °F - 48.2 °F 100% 29.95 in 10.0 mi Calm Calm - N/A   Overcast
5:15 AM 46.4 °F - 46.4 °F 100% 29.95 in 10.0 mi Calm Calm - N/A   Overcast
5:35 AM 44.6 °F - 44.6 °F 100% 29.95 in 10.0 mi Calm Calm - N/A   Overcast
5:55 AM 44.6 °F - 44.6 °F 100% 29.96 in 10.0 mi Calm Calm - N/A   Overcast
6:15 AM 42.8 °F - 42.8 °F 100% 29.96 in 10.0 mi Calm Calm - N/A   Overcast
6:35 AM 42.8 °F - 42.8 °F 100% 29.97 in 9.0 mi Calm Calm - N/A   Overcast
6:55 AM 42.8 °F - 42.8 °F 100% 29.97 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:15 AM 42.8 °F - 42.8 °F 100% 29.98 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:35 AM 42.8 °F - 42.8 °F 100% 29.98 in 10.0 mi Calm Calm - N/A   Clear
7:55 AM 44.6 °F 43.1 °F 44.6 °F 100% 29.99 in 10.0 mi WNW 3.5 mph - N/A   Clear
8:15 AM 46.4 °F 44.3 °F 46.4 °F 100% 29.99 in 10.0 mi WNW 4.6 mph - N/A   Clear
8:35 AM 48.2 °F - 48.2 °F 100% 30.00 in 10.0 mi WNW 5.8 mph - N/A   Clear
8:55 AM 50.0 °F - 50.0 °F 100% 30.00 in 10.0 mi Variable 5.8 mph - N/A   Clear
9:15 AM 51.8 °F - 50.0 °F 94% 30.01 in 10.0 mi WNW 4.6 mph - N/A   Scattered Clouds
9:35 AM 53.6 °F - 51.8 °F 94% 30.01 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:55 AM 55.4 °F - 50.0 °F 82% 30.01 in 10.0 mi West 5.8 mph - N/A   Clear
10:15 AM 57.2 °F - 48.2 °F 72% 30.02 in 10.0 mi Variable 5.8 mph - N/A   Clear
10:35 AM 57.2 °F - 48.2 °F 72% 30.02 in 10.0 mi Variable 4.6 mph 11.5 mph N/A   Clear
10:55 AM 59.0 °F - 46.4 °F 63% 30.02 in 10.0 mi Variable 6.9 mph - N/A   Clear
11:15 AM 60.8 °F - 46.4 °F 59% 30.02 in 10.0 mi NW 6.9 mph 13.8 mph N/A   Clear
11:35 AM 60.8 °F - 44.6 °F 55% 30.01 in 10.0 mi Variable 6.9 mph 15.0 mph N/A   Clear
11:55 AM 62.6 °F - 42.8 °F 48% 30.01 in 9.0 mi NW 8.1 mph 13.8 mph N/A   Clear
12:15 PM 62.6 °F - 42.8 °F 48% 30.01 in 10.0 mi WNW 8.1 mph 13.8 mph N/A   Clear
12:35 PM 64.4 °F - 42.8 °F 45% 30.01 in 10.0 mi Variable 4.6 mph 12.7 mph N/A   Clear
12:55 PM 66.2 °F - 41.0 °F 40% 30.00 in 10.0 mi WSW 11.5 mph - N/A   Clear
1:15 PM 66.2 °F - 42.8 °F 43% 30.00 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds
1:35 PM 66.2 °F - 41.0 °F 40% 30.00 in 10.0 mi West 13.8 mph - N/A   Scattered Clouds
2:15 PM 66.2 °F - 39.2 °F 37% 29.99 in 10.0 mi SW 15.0 mph - N/A   Clear
2:35 PM 66.2 °F - 39.2 °F 37% 29.98 in 10.0 mi West 16.1 mph - N/A   Clear
2:55 PM 66.2 °F - 39.2 °F 37% 29.98 in 10.0 mi West 17.3 mph 25.3 mph N/A   Clear
3:15 PM 66.2 °F - 41.0 °F 40% 29.98 in 10.0 mi WSW 16.1 mph 25.3 mph N/A   Clear
3:35 PM 64.4 °F - 42.8 °F 45% 29.98 in 10.0 mi WSW 16.1 mph 23.0 mph N/A   Clear
3:55 PM 64.4 °F - 42.8 °F 45% 29.98 in 10.0 mi WSW 15.0 mph 25.3 mph N/A   Clear
4:15 PM 64.4 °F - 41.0 °F 42% 29.98 in 10.0 mi West 16.1 mph 26.5 mph N/A   Clear
4:35 PM 64.4 °F - 42.8 °F 45% 29.98 in 10.0 mi West 16.1 mph 23.0 mph N/A   Clear
4:55 PM 62.6 °F - 42.8 °F 48% 29.98 in 10.0 mi West 16.1 mph 21.9 mph N/A   Clear
5:15 PM 62.6 °F - 42.8 °F 48% 29.98 in 10.0 mi West 16.1 mph - N/A   Clear
5:35 PM 60.8 °F - 42.8 °F 52% 29.97 in 10.0 mi West 13.8 mph 21.9 mph N/A   Clear
5:55 PM 60.8 °F - 41.0 °F 48% 29.98 in 10.0 mi WNW 11.5 mph 19.6 mph N/A   Clear
6:15 PM 59.0 °F - 41.0 °F 51% 29.98 in 10.0 mi WNW 10.4 mph 17.3 mph N/A   Clear
6:35 PM 57.2 °F - 42.8 °F 59% 29.98 in 10.0 mi West 9.2 mph - N/A   Clear
6:55 PM 55.4 °F - 42.8 °F 63% 29.98 in 10.0 mi West 6.9 mph - N/A   Clear
7:15 PM 55.4 °F - 44.6 °F 67% 29.98 in 10.0 mi WNW 5.8 mph - N/A   Clear
7:35 PM 53.6 °F - 44.6 °F 72% 29.98 in 10.0 mi Calm Calm - N/A   Clear
7:55 PM 53.6 °F - 44.6 °F 72% 29.98 in 10.0 mi West 6.9 mph - N/A   Clear
8:15 PM 51.8 °F - 44.6 °F 76% 29.98 in 10.0 mi Calm Calm - N/A   Clear
8:35 PM 51.8 °F - 44.6 °F 76% 29.98 in 10.0 mi Calm Calm - N/A   Clear
8:55 PM 48.2 °F - 42.8 °F 82% 29.99 in 10.0 mi Calm Calm - N/A   Clear
9:15 PM 48.2 °F - 42.8 °F 82% 29.99 in 10.0 mi Calm Calm - N/A   Clear
9:35 PM 48.2 °F - 44.6 °F 87% 29.98 in 10.0 mi Calm Calm - N/A   Clear
9:55 PM 46.4 °F - 44.6 °F 93% 29.98 in 10.0 mi Calm Calm - N/A   Clear
10:15 PM 46.4 °F - 44.6 °F 93% 29.98 in 10.0 mi Calm Calm - N/A   Clear
10:35 PM 46.4 °F - 44.6 °F 93% 29.98 in 10.0 mi Calm Calm - N/A   Clear
10:55 PM 46.4 °F - 44.6 °F 93% 29.98 in 10.0 mi Calm Calm - N/A   Clear
11:15 PM 44.6 °F - 44.6 °F 100% 29.98 in 10.0 mi Calm Calm - N/A   Clear
11:35 PM 44.6 °F - 44.6 °F 100% 29.98 in 10.0 mi Calm Calm - N/A   Clear
11:55 PM 46.4 °F - 44.6 °F 93% 29.98 in 10.0 mi Calm Calm - N/A   Clear