Weather History for Petaluma, CA

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Wednesday, October 31, 2012

  Actual Average (KAPC) Record (KAPC)
Temperature  
Mean Temperature 58 °F 55 °F  
Max Temperature 60 °F 70 °F 79 °F (2011)
Min Temperature 55 °F 41 °F 30 °F (2002)
Degree Days  
Heating Degree Days 8    
Month to date heating degree days  
Since 1 July heating degree days  
Cooling Degree Days 0    
Month to date cooling degree days  
Year to date cooling degree days  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 56 °F    
Average Humidity 96    
Maximum Humidity 100    
Minimum Humidity 77    
Precipitation  
Precipitation 0.55 in - 1.20 in (1927)
Month to date precipitation  
Year to date precipitation  
Since 1 July precipitation  
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 3 mph (ESE)    
Max Wind Speed 10 mph    
Max Gust Speed -    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Oct. 31, 2012 Rise Set
Actual Time 7:36 AM PDT 6:11 PM PDT
Civil Twilight 7:08 AM PDT 6:38 PM PDT
Nautical Twilight 6:37 AM PDT 7:09 PM PDT
Astronomical Twilight 6:06 AM PDT 7:40 PM PDT
Moon 7:28 PM PDT (10/31) 9:20 AM PDT (10/31)
Length of Visible Light 11h 29m
Length of Day
10h 35m
Waning Gibbous, 97% of the Moon is Illuminated
Oct 31
Waning Gibbous
Nov 6
Last Quarter
Nov 13
New
Nov 20
First Quarter
Nov 28
Full

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 55.4 °F 55.4 °F 100% 30.01 in 5.0 mi NNW 3.5 mph - N/A   Overcast
12:35 AM 55.4 °F 55.4 °F 100% 30.00 in 10.0 mi NW 3.5 mph - N/A   Overcast
12:55 AM 55.4 °F 55.4 °F 100% 30.01 in 3.0 mi NW 4.6 mph - N/A   Overcast
1:15 AM 55.4 °F 55.4 °F 100% 30.01 in 5.0 mi NW 3.5 mph - N/A   Overcast
1:35 AM 55.4 °F 55.4 °F 100% 30.01 in 7.0 mi NW 3.5 mph - N/A   Overcast
1:55 AM 55.4 °F 55.4 °F 100% 30.00 in 8.0 mi NW 3.5 mph - N/A   Overcast
2:15 AM 55.4 °F 55.4 °F 100% 30.00 in 3.0 mi NW 3.5 mph - N/A   Overcast
2:35 AM 55.4 °F 55.4 °F 100% 30.00 in 5.0 mi NW 4.6 mph - N/A   Overcast
2:55 AM 55.4 °F 55.4 °F 100% 30.00 in 10.0 mi NNW 3.5 mph - N/A   Overcast
3:15 AM 55.4 °F 55.4 °F 100% 30.00 in 10.0 mi NW 3.5 mph - N/A   Overcast
3:35 AM 55.4 °F 55.4 °F 100% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
3:55 AM 55.4 °F 55.4 °F 100% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
4:15 AM 55.4 °F 55.4 °F 100% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
4:35 AM 55.4 °F 55.4 °F 100% 29.98 in 10.0 mi SSW 3.5 mph - N/A   Overcast
4:55 AM 55.4 °F 55.4 °F 100% 29.97 in 10.0 mi Calm Calm - N/A   Overcast
5:15 AM 57.2 °F 57.2 °F 100% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
5:35 AM 55.4 °F 55.4 °F 100% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
5:55 AM 55.4 °F 55.4 °F 100% 29.98 in 7.0 mi Calm Calm - N/A   Overcast
6:15 AM 55.4 °F 55.4 °F 100% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
6:35 AM 55.4 °F 55.4 °F 100% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
6:55 AM 57.2 °F 57.2 °F 100% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
7:15 AM 57.2 °F 57.2 °F 100% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
7:35 AM 55.4 °F 55.4 °F 100% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
7:55 AM 55.4 °F 55.4 °F 100% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
8:15 AM 55.4 °F 55.4 °F 100% 30.01 in 9.0 mi East 3.5 mph - N/A   Overcast
8:35 AM 55.4 °F 55.4 °F 100% 30.01 in 9.0 mi Calm Calm - N/A   Overcast
8:55 AM 57.2 °F 57.2 °F 100% 30.01 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:15 AM 57.2 °F 57.2 °F 100% 30.02 in 10.0 mi Calm Calm - N/A   Overcast
9:35 AM 57.2 °F 57.2 °F 100% 30.01 in 10.0 mi SE 3.5 mph - N/A   Overcast
9:55 AM 57.2 °F 57.2 °F 100% 30.01 in 10.0 mi SE 3.5 mph - N/A   Overcast
10:15 AM 59.0 °F 57.2 °F 94% 30.02 in 10.0 mi South 4.6 mph - N/A   Overcast
10:35 AM 59.0 °F 57.2 °F 94% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
10:55 AM 59.0 °F 57.2 °F 94% 30.01 in 10.0 mi ESE 3.5 mph - N/A   Overcast
11:15 AM 59.0 °F 55.4 °F 88% 30.02 in 10.0 mi ESE 4.6 mph - N/A   Overcast
11:35 AM 60.8 °F 55.4 °F 82% 30.03 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
11:55 AM 60.8 °F 55.4 °F 82% 30.02 in 10.0 mi ESE 3.5 mph - N/A   Overcast
12:15 PM 60.8 °F 53.6 °F 77% 30.02 in 10.0 mi ESE 5.8 mph - N/A   Overcast
12:35 PM 60.8 °F 53.6 °F 77% 30.02 in 10.0 mi SSE 5.8 mph - N/A   Overcast
12:55 PM 60.8 °F 53.6 °F 77% 30.01 in 10.0 mi SSW 4.6 mph - N/A   Overcast
1:35 PM 60.8 °F 53.6 °F 77% 30.01 in 10.0 mi SSW 10.4 mph - N/A   Overcast
1:55 PM 60.8 °F 53.6 °F 77% 30.00 in 10.0 mi SSW 6.9 mph - N/A   Overcast
2:15 PM 60.8 °F 53.6 °F 77% 29.99 in 10.0 mi South 5.8 mph - N/A   Overcast
2:35 PM 59.0 °F 55.4 °F 88% 29.99 in 5.0 mi East 3.5 mph - N/A   Overcast
2:55 PM 59.0 °F 55.4 °F 88% 29.99 in 5.0 mi SE 3.5 mph - N/A   Overcast
3:15 PM 59.0 °F 55.4 °F 88% 29.98 in 10.0 mi ESE 4.6 mph - N/A   Overcast
3:35 PM 59.0 °F 55.4 °F 88% 29.99 in 10.0 mi ESE 4.6 mph - N/A   Overcast
3:55 PM 59.0 °F 55.4 °F 88% 29.98 in 10.0 mi ESE 3.5 mph - N/A   Overcast
4:15 PM 59.0 °F 55.4 °F 88% 29.99 in 6.0 mi ESE 3.5 mph - N/A   Overcast
4:35 PM 59.0 °F 57.2 °F 94% 29.99 in 6.0 mi Calm Calm - N/A   Overcast
4:55 PM 57.2 °F 57.2 °F 100% 29.99 in 5.0 mi Calm Calm - N/A   Overcast
5:15 PM 57.2 °F 57.2 °F 100% 30.00 in 5.0 mi East 3.5 mph - N/A   Overcast
5:35 PM 57.2 °F 57.2 °F 100% 29.99 in 2.5 mi Calm Calm - 0.06 in   Overcast
5:55 PM 57.2 °F 57.2 °F 100% 29.99 in 6.0 mi ENE 4.6 mph - 0.06 in   Overcast
6:15 PM 57.2 °F 57.2 °F 100% 29.99 in 5.0 mi East 3.5 mph - 0.02 in   Overcast
6:35 PM 57.2 °F 57.2 °F 100% 29.99 in 5.0 mi ESE 4.6 mph - 0.04 in   Overcast
6:55 PM 57.2 °F 57.2 °F 100% 29.99 in 5.0 mi East 4.6 mph - 0.07 in   Overcast
7:15 PM 57.2 °F 57.2 °F 100% 29.99 in 6.0 mi East 4.6 mph - 0.03 in   Overcast
7:35 PM 57.2 °F 57.2 °F 100% 29.99 in 5.0 mi East 3.5 mph - 0.06 in   Overcast
7:55 PM 57.2 °F 57.2 °F 100% 30.00 in 3.0 mi East 3.5 mph - 0.09 in   Overcast
8:15 PM 57.2 °F 57.2 °F 100% 30.00 in 4.0 mi East 3.5 mph - 0.04 in   Overcast
8:35 PM 57.2 °F 57.2 °F 100% 30.00 in 4.0 mi East 4.6 mph - 0.08 in   Overcast
8:55 PM 57.2 °F 57.2 °F 100% 30.00 in 4.0 mi East 4.6 mph - 0.12 in   Overcast
9:15 PM 57.2 °F 57.2 °F 100% 30.00 in 4.0 mi East 4.6 mph - 0.03 in   Overcast
9:35 PM 57.2 °F 57.2 °F 100% 30.00 in 4.0 mi East 4.6 mph - 0.07 in   Overcast
9:55 PM 57.2 °F 57.2 °F 100% 30.00 in 5.0 mi East 4.6 mph - 0.11 in   Overcast
10:15 PM 57.2 °F 57.2 °F 100% 30.00 in 5.0 mi ESE 4.6 mph - 0.03 in   Overcast
10:35 PM 57.2 °F 57.2 °F 100% 30.01 in 3.0 mi ESE 3.5 mph - 0.05 in   Overcast
10:55 PM 57.2 °F 57.2 °F 100% 30.00 in 7.0 mi East 4.6 mph - 0.08 in   Overcast
11:15 PM 57.2 °F 57.2 °F 100% 30.01 in 6.0 mi East 3.5 mph - 0.01 in   Overcast
11:35 PM 57.2 °F 57.2 °F 100% 30.01 in 6.0 mi Calm Calm - 0.01 in   Overcast
11:55 PM 57.2 °F 57.2 °F 100% 30.01 in 5.0 mi Calm Calm - 0.02 in   Overcast