Weather History for Petaluma, CA

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Tuesday, December 31, 2013

  Actual Average (KAPC) Record (KAPC)
Temperature  
Mean Temperature 46 °F 45 °F  
Max Temperature 60 °F 54 °F 62 °F (2011)
Min Temperature 32 °F 36 °F 27 °F (2012)
Degree Days  
Heating Degree Days 19    
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 85    
Maximum Humidity 100    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in - 2.00 in (2005)
Month to date precipitation  
Year to date precipitation  
Since 1 July precipitation  
Sea Level Pressure  
Sea Level Pressure 30.24 in    
Wind  
Wind Speed 1 mph (WNW)    
Max Wind Speed 7 mph    
Max Gust Speed -    
Visibility 6 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 31, 2013 Rise Set
Actual Time 7:27 AM PST 5:00 PM PST
Civil Twilight 6:57 AM PST 5:29 PM PST
Nautical Twilight 6:24 AM PST 6:02 PM PST
Astronomical Twilight 5:52 AM PST 6:35 PM PST
Moon 6:26 AM PST (12/31) 4:41 PM PST (12/31)
Length of Visible Light 10h 32m
Length of Day
9h 33m
Waning Crescent, 1% of the Moon is Illuminated
Dec 31
Waning Crescent
Jan 1
New
Jan 7
First Quarter
Jan 15
Full
Jan 23
Last Quarter

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 33.8 °F - 32.0 °F 93% 30.26 in 3.0 mi Calm Calm - N/A   Overcast
12:35 AM 35.6 °F - 35.6 °F 100% 30.26 in 0.8 mi Calm Calm - N/A   Overcast
12:55 AM 37.4 °F - 37.4 °F 100% 30.26 in 0.2 mi Calm Calm - N/A   Overcast
1:15 AM 35.6 °F - 35.6 °F 100% 30.26 in 7.0 mi Calm Calm - N/A   Overcast
1:35 AM 37.4 °F - 37.4 °F 100% 30.25 in 1.5 mi Calm Calm - N/A   Overcast
1:55 AM 37.4 °F - 37.4 °F 100% 30.26 in 0.2 mi Calm Calm - N/A   Overcast
2:15 AM 39.2 °F - 39.2 °F 100% 30.26 in 0.2 mi Calm Calm - N/A   Overcast
2:35 AM 39.2 °F - 39.2 °F 100% 30.26 in 0.2 mi Calm Calm - N/A   Overcast
2:55 AM 39.2 °F - 39.2 °F 100% 30.27 in 0.2 mi Calm Calm - N/A   Overcast
3:15 AM 39.2 °F - 39.2 °F 100% 30.26 in 0.2 mi Calm Calm - N/A   Overcast
3:35 AM 37.4 °F - 37.4 °F 100% 30.26 in 0.2 mi Calm Calm - N/A   Overcast
3:55 AM 35.6 °F - 35.6 °F 100% 30.26 in 0.2 mi Calm Calm - N/A   Overcast
4:15 AM 35.6 °F - 35.6 °F 100% 30.25 in 0.2 mi Calm Calm - N/A   Overcast
4:35 AM 35.6 °F 31.7 °F 35.6 °F 100% 30.26 in 0.2 mi WNW 4.6 mph - N/A   Overcast
4:55 AM 33.8 °F - 33.8 °F 100% 30.25 in 0.2 mi Calm Calm - N/A   Overcast
5:15 AM 33.8 °F - 33.8 °F 100% 30.25 in 0.2 mi Calm Calm - N/A   Overcast
5:35 AM 33.8 °F - 33.8 °F 100% 30.24 in 0.2 mi Calm Calm - N/A   Overcast
5:55 AM 32.0 °F 28.7 °F 32.0 °F 100% 30.25 in 0.8 mi North 3.5 mph - N/A   Overcast
6:15 AM 35.6 °F 32.8 °F 35.6 °F 100% 30.26 in 3.0 mi NW 3.5 mph - N/A   Mostly Cloudy
6:35 AM 33.8 °F 29.6 °F 33.8 °F 100% 30.27 in 4.0 mi WNW 4.6 mph - N/A   Overcast
6:55 AM 33.8 °F 30.8 °F 33.8 °F 100% 30.27 in 4.0 mi WNW 3.5 mph - N/A   Overcast
7:15 AM 35.6 °F - 35.6 °F 100% 30.27 in 5.0 mi Calm Calm - N/A   Overcast
7:35 AM 32.0 °F - 32.0 °F 100% 30.27 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
7:55 AM 32.0 °F - 32.0 °F 100% 30.27 in 2.0 mi Calm Calm - N/A   Clear
8:15 AM 33.8 °F - 33.8 °F 100% 30.28 in 3.0 mi Calm Calm - N/A   Clear
8:35 AM 35.6 °F - 35.6 °F 100% 30.28 in 5.0 mi Calm Calm - N/A   Clear
8:55 AM 37.4 °F - 37.4 °F 100% 30.28 in 6.0 mi Calm Calm - N/A   Clear
9:15 AM 39.2 °F - 39.2 °F 100% 30.28 in 7.0 mi Calm Calm - N/A   Clear
9:35 AM 39.2 °F 37.0 °F 39.2 °F 100% 30.30 in 6.0 mi WNW 3.5 mph - N/A   Clear
9:55 AM 42.8 °F 40.1 °F 42.8 °F 100% 30.31 in 8.0 mi WNW 4.6 mph - N/A   Clear
10:15 AM 44.6 °F 43.1 °F 42.8 °F 93% 30.31 in 8.0 mi WNW 3.5 mph - N/A   Clear
10:35 AM 44.6 °F 42.2 °F 42.8 °F 93% 30.30 in 8.0 mi WNW 4.6 mph - N/A   Clear
10:55 AM 46.4 °F 43.5 °F 41.0 °F 81% 30.30 in 9.0 mi WNW 5.8 mph - N/A   Clear
11:15 AM 50.0 °F - 39.2 °F 66% 30.30 in 10.0 mi WNW 6.9 mph - N/A   Clear
11:35 AM 50.0 °F - 39.2 °F 66% 30.28 in 10.0 mi West 5.8 mph - N/A   Clear
11:55 AM 51.8 °F - 39.2 °F 62% 30.25 in 10.0 mi South 3.5 mph - N/A   Clear
12:15 PM 53.6 °F - 39.2 °F 58% 30.23 in 9.0 mi South 3.5 mph - N/A   Clear
12:35 PM 53.6 °F - 39.2 °F 58% 30.22 in 9.0 mi Calm Calm - N/A   Clear
12:55 PM 55.4 °F - 35.6 °F 47% 30.22 in 10.0 mi Calm Calm - N/A   Clear
1:15 PM 57.2 °F - 35.6 °F 44% 30.22 in 10.0 mi Calm Calm - N/A   Clear
1:35 PM 57.2 °F - 37.4 °F 48% 30.21 in 10.0 mi Calm Calm - N/A   Clear
1:55 PM 57.2 °F - 35.6 °F 44% 30.20 in 10.0 mi Calm Calm - N/A   Clear
2:15 PM 59.0 °F - 37.4 °F 45% 30.20 in 10.0 mi West 5.8 mph - N/A   Clear
2:35 PM 60.8 °F - 37.4 °F 42% 30.20 in 10.0 mi West 6.9 mph - N/A   Clear
2:55 PM 60.8 °F - 37.4 °F 42% 30.20 in 10.0 mi Calm Calm - N/A   Clear
3:15 PM 60.8 °F - 39.2 °F 45% 30.19 in 10.0 mi Calm Calm - N/A   Clear
3:35 PM 60.8 °F - 37.4 °F 42% 30.19 in 10.0 mi Calm Calm - N/A   Clear
3:55 PM 60.8 °F - 37.4 °F 42% 30.19 in 10.0 mi Calm Calm - N/A   Clear
4:15 PM 59.0 °F - 41.0 °F 51% 30.19 in 10.0 mi WNW 5.8 mph - N/A   Clear
4:35 PM 57.2 °F - 41.0 °F 55% 30.19 in 10.0 mi WNW 5.8 mph - N/A   Clear
4:55 PM 55.4 °F - 41.0 °F 58% 30.19 in 10.0 mi NW 4.6 mph - N/A   Clear
5:15 PM 50.0 °F - 41.0 °F 71% 30.19 in 10.0 mi WNW 4.6 mph - N/A   Clear
5:35 PM 50.0 °F - 41.0 °F 71% 30.20 in 10.0 mi WNW 4.6 mph - N/A   Clear
5:55 PM 46.4 °F 45.2 °F 41.0 °F 81% 30.20 in 10.0 mi NNW 3.5 mph - N/A   Scattered Clouds
6:15 PM 46.4 °F - 42.8 °F 87% 30.20 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:35 PM 41.0 °F - 37.4 °F 87% 30.20 in 10.0 mi Calm Calm - N/A   Overcast
6:55 PM 41.0 °F 39.0 °F 39.2 °F 93% 30.20 in 10.0 mi North 3.5 mph - N/A   Overcast
7:15 PM 42.8 °F 40.1 °F 41.0 °F 93% 30.20 in 10.0 mi North 4.6 mph - N/A   Mostly Cloudy
7:35 PM 42.8 °F 41.1 °F 41.0 °F 93% 30.20 in 10.0 mi NNW 3.5 mph - N/A   Mostly Cloudy
7:55 PM 42.8 °F 40.1 °F 42.8 °F 100% 30.20 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
8:15 PM 41.0 °F - 41.0 °F 100% 30.20 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:35 PM 39.2 °F - 39.2 °F 100% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:55 PM 39.2 °F - 39.2 °F 100% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:15 PM 37.4 °F - 37.4 °F 100% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:35 PM 37.4 °F - 37.4 °F 100% 30.21 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
9:55 PM 35.6 °F - 35.6 °F 100% 30.21 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
10:15 PM 35.6 °F 32.8 °F 35.6 °F 100% 30.21 in 6.0 mi WNW 3.5 mph - N/A   Overcast
10:35 PM 35.6 °F - 35.6 °F 100% 30.22 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
10:55 PM 35.6 °F - 35.6 °F 100% 30.22 in 8.0 mi Calm Calm - N/A   Overcast
11:15 PM 37.4 °F - 37.4 °F 100% 30.23 in 6.0 mi Calm Calm - N/A   Mostly Cloudy
11:35 PM 35.6 °F - 35.6 °F 100% 30.23 in 5.0 mi Calm Calm - N/A   Mostly Cloudy
11:55 PM 32.0 °F - 32.0 °F 100% 30.22 in 6.0 mi Calm Calm - N/A   Partly Cloudy