Weather History for Petaluma, CA

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Tuesday, December 17, 2013

  Actual Average (KAPC) Record (KAPC)
Temperature  
Mean Temperature 48 °F 45 °F  
Max Temperature 62 °F 55 °F 66 °F (2000)
Min Temperature 33 °F 36 °F 24 °F (2008)
Degree Days  
Heating Degree Days 18    
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  
Moisture  
Dew Point 38 °F    
Average Humidity 75    
Maximum Humidity 100    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in - 1.36 in (1987)
Month to date precipitation  
Year to date precipitation  
Since 1 July precipitation  
Sea Level Pressure  
Sea Level Pressure 30.14 in    
Wind  
Wind Speed 3 mph (SE)    
Max Wind Speed 12 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

Dec. 17, 2013 Rise Set
Actual Time 7:21 AM PST 4:52 PM PST
Civil Twilight 6:51 AM PST 5:21 PM PST
Nautical Twilight 6:18 AM PST 5:54 PM PST
Astronomical Twilight 5:46 AM PST 6:27 PM PST
Moon 5:35 PM PST (12/17) 7:22 AM PST (12/17)
Length of Visible Light 10h 29m
Length of Day
9h 30m
Full, 100% of the Moon is Illuminated
Dec 17
Full
Dec 25
Last Quarter
Jan 1
New
Jan 7
First Quarter
Jan 15
Full

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 41.0 °F - 35.6 °F 81% 30.19 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
12:35 AM 41.0 °F 39.0 °F 35.6 °F 81% 30.19 in 8.0 mi NNE 3.5 mph - N/A   Overcast
12:55 AM 39.2 °F - 35.6 °F 87% 30.19 in 8.0 mi Calm Calm - N/A   Overcast
1:15 AM 39.2 °F - 35.6 °F 87% 30.19 in 8.0 mi Calm Calm - N/A   Overcast
1:35 AM 39.2 °F - 35.6 °F 87% 30.19 in 8.0 mi Calm Calm - N/A   Overcast
1:55 AM 37.4 °F - 35.6 °F 93% 30.19 in 9.0 mi Calm Calm - N/A   Overcast
2:15 AM 37.4 °F - 35.6 °F 93% 30.20 in 9.0 mi Calm Calm - N/A   Overcast
2:35 AM 35.6 °F - 35.6 °F 100% 30.20 in 8.0 mi Calm Calm - N/A   Overcast
2:55 AM 35.6 °F - 35.6 °F 100% 30.20 in 9.0 mi Calm Calm - N/A   Overcast
3:15 AM 33.8 °F - 33.8 °F 100% 30.19 in 10.0 mi Calm Calm - N/A   Overcast
3:35 AM 35.6 °F 32.8 °F 35.6 °F 100% 30.19 in 8.0 mi NNE 3.5 mph - N/A   Overcast
3:55 AM 35.6 °F - 35.6 °F 100% 30.18 in 8.0 mi Calm Calm - N/A   Overcast
4:15 AM 37.4 °F - 37.4 °F 100% 30.18 in 7.0 mi Calm Calm - N/A   Overcast
4:35 AM 35.6 °F 32.8 °F 35.6 °F 100% 30.18 in 7.0 mi East 3.5 mph - N/A   Overcast
4:55 AM 44.6 °F 41.4 °F 37.4 °F 76% 30.17 in 5.0 mi ESE 5.8 mph - N/A   Overcast
5:15 AM 39.2 °F 37.0 °F 35.6 °F 87% 30.18 in 6.0 mi SE 3.5 mph - N/A   Overcast
5:35 AM 41.0 °F 39.0 °F 37.4 °F 87% 30.17 in 5.0 mi ESE 3.5 mph - N/A   Overcast
5:55 AM 39.2 °F - 37.4 °F 93% 30.17 in 5.0 mi Calm Calm - N/A   Mostly Cloudy
6:15 AM 41.0 °F 38.0 °F 39.2 °F 93% 30.18 in 5.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
6:35 AM 44.6 °F 42.2 °F 39.2 °F 81% 30.18 in 5.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
6:55 AM 44.6 °F 40.7 °F 39.2 °F 81% 30.18 in 5.0 mi ESE 6.9 mph - N/A   Overcast
7:15 AM 44.6 °F 42.2 °F 39.2 °F 81% 30.18 in 5.0 mi SE 4.6 mph - N/A   Overcast
7:35 AM 44.6 °F 42.2 °F 39.2 °F 81% 30.19 in 3.0 mi SE 4.6 mph - N/A   Mostly Cloudy
7:55 AM 44.6 °F 42.2 °F 39.2 °F 81% 30.19 in 3.0 mi SE 4.6 mph - N/A   Clear
8:15 AM 44.6 °F 42.2 °F 39.2 °F 81% 30.20 in 3.0 mi ESE 4.6 mph - N/A   Clear
8:35 AM 46.4 °F 45.2 °F 39.2 °F 76% 30.20 in 3.0 mi ESE 3.5 mph - N/A   Clear
8:55 AM 46.4 °F 44.3 °F 41.0 °F 81% 30.20 in 4.0 mi SE 4.6 mph - N/A   Clear
9:15 AM 50.0 °F - 41.0 °F 71% 30.21 in 4.0 mi SE 6.9 mph - N/A   Clear
9:35 AM 50.0 °F - 41.0 °F 71% 30.21 in 4.0 mi SE 4.6 mph - N/A   Clear
9:55 AM 51.8 °F - 39.2 °F 62% 30.21 in 4.0 mi ESE 4.6 mph - N/A   Clear
10:15 AM 53.6 °F - 39.2 °F 58% 30.20 in 5.0 mi SSE 6.9 mph - N/A   Clear
10:35 AM 53.6 °F - 39.2 °F 58% 30.20 in 5.0 mi SSE 6.9 mph - N/A   Clear
10:55 AM 55.4 °F - 41.0 °F 58% 30.19 in 5.0 mi SSE 5.8 mph - N/A   Clear
11:15 AM 55.4 °F - 39.2 °F 54% 30.19 in 5.0 mi South 6.9 mph - N/A   Clear
11:35 AM 57.2 °F - 39.2 °F 51% 30.17 in 7.0 mi SSE 6.9 mph - N/A   Clear
11:55 AM 59.0 °F - 39.2 °F 48% 30.15 in 7.0 mi SSE 6.9 mph - N/A   Clear
12:15 PM 60.8 °F - 39.2 °F 45% 30.14 in 9.0 mi SSE 10.4 mph - N/A   Clear
12:35 PM 60.8 °F - 39.2 °F 45% 30.13 in 8.0 mi SSE 9.2 mph - N/A   Clear
12:55 PM 62.6 °F - 39.2 °F 42% 30.12 in 9.0 mi SSE 8.1 mph - N/A   Clear
1:15 PM 62.6 °F - 39.2 °F 42% 30.11 in 9.0 mi South 6.9 mph - N/A   Clear
1:35 PM 62.6 °F - 39.2 °F 42% 30.10 in 9.0 mi SSE 9.2 mph - N/A   Clear
1:55 PM 62.6 °F - 39.2 °F 42% 30.10 in 9.0 mi SSE 8.1 mph - N/A   Clear
2:15 PM 62.6 °F - 39.2 °F 42% 30.09 in 9.0 mi SSE 10.4 mph - N/A   Clear
2:35 PM 62.6 °F - 39.2 °F 42% 30.09 in 9.0 mi SSE 10.4 mph - N/A   Clear
2:55 PM 62.6 °F - 39.2 °F 42% 30.09 in 9.0 mi SSE 11.5 mph - N/A   Clear
3:15 PM 59.0 °F - 39.2 °F 48% 30.09 in 9.0 mi SSE 9.2 mph - N/A   Clear
3:35 PM 59.0 °F - 39.2 °F 48% 30.09 in 9.0 mi SSE 11.5 mph - N/A   Clear
3:55 PM 59.0 °F - 41.0 °F 51% 30.09 in 9.0 mi SSE 8.1 mph - N/A   Clear
4:15 PM 59.0 °F - 39.2 °F 48% 30.09 in 8.0 mi SSE 10.4 mph - N/A   Clear
4:35 PM 57.2 °F - 39.2 °F 51% 30.09 in 8.0 mi SSE 4.6 mph - N/A   Clear
4:55 PM 55.4 °F - 41.0 °F 58% 30.08 in 7.0 mi SE 4.6 mph - N/A   Clear
5:15 PM 53.6 °F - 39.2 °F 58% 30.08 in 7.0 mi ESE 3.5 mph - N/A   Clear
5:35 PM 50.0 °F - 39.2 °F 66% 30.08 in 9.0 mi Calm Calm - N/A   Clear
5:55 PM 48.2 °F - 37.4 °F 66% 30.08 in 9.0 mi NE 3.5 mph - N/A   Scattered Clouds
6:15 PM 46.4 °F - 37.4 °F 71% 30.09 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
6:35 PM 44.6 °F 43.1 °F 37.4 °F 76% 30.09 in 9.0 mi NNE 3.5 mph - N/A   Mostly Cloudy
6:55 PM 44.6 °F - 37.4 °F 76% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:15 PM 42.8 °F 40.1 °F 37.4 °F 81% 30.09 in 10.0 mi NNE 4.6 mph - N/A   Mostly Cloudy
7:35 PM 44.6 °F - 37.4 °F 76% 30.08 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:55 PM 42.8 °F 40.1 °F 37.4 °F 81% 30.08 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
8:15 PM 41.0 °F - 37.4 °F 87% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:35 PM 39.2 °F - 35.6 °F 87% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:55 PM 39.2 °F - 37.4 °F 93% 30.09 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:15 PM 39.2 °F - 35.6 °F 87% 30.08 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:35 PM 39.2 °F - 37.4 °F 93% 30.08 in 10.0 mi Calm Calm - N/A   Clear
9:55 PM 37.4 °F - 35.6 °F 93% 30.08 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:15 PM 35.6 °F - 35.6 °F 100% 30.07 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:35 PM 37.4 °F - 35.6 °F 93% 30.08 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:55 PM 35.6 °F - 35.6 °F 100% 30.07 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:15 PM 37.4 °F - 37.4 °F 100% 30.07 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:35 PM 35.6 °F - 35.6 °F 100% 30.07 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:55 PM 35.6 °F - 35.6 °F 100% 30.07 in 10.0 mi Calm Calm - N/A   Scattered Clouds