Weather History for Petaluma, CA

Change the Weather History Date:

Saturday, December 29, 2012

  Actual Average (KAPC) Record (KAPC)
Temperature  
Mean Temperature 45 °F 45 °F  
Max Temperature 55 °F 54 °F 64 °F (2013)
Min Temperature 35 °F 36 °F 27 °F (2009)
Degree Days  
Heating Degree Days 20    
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 40 °F    
Average Humidity 87    
Maximum Humidity 100    
Minimum Humidity 58    
Precipitation  
Precipitation 0.01 in - 1.98 in (1981)
Month to date precipitation  
Year to date precipitation  
Since 1 July precipitation  
Sea Level Pressure  
Sea Level Pressure 30.06 in    
Wind  
Wind Speed 3 mph (West)    
Max Wind Speed 9 mph    
Max Gust Speed -    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Dec. 29, 2012 Rise Set
Actual Time 7:26 AM PST 4:58 PM PST
Civil Twilight 6:57 AM PST 5:28 PM PST
Nautical Twilight 6:24 AM PST 6:01 PM PST
Astronomical Twilight 5:51 AM PST 6:33 PM PST
Moon 6:35 PM PST (12/29) 8:04 AM PST (12/29)
Length of Visible Light 10h 31m
Length of Day
9h 32m
Full, 98% of the Moon is Illuminated
Dec 29
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
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 37.1 °F 41.0 °F 100% 30.06 in 6.0 mi SSE 5.8 mph - N/A   Overcast
12:35 AM 41.0 °F 38.0 °F 41.0 °F 100% 30.06 in 5.0 mi SSE 4.6 mph - N/A   Overcast
12:55 AM 41.0 °F 39.0 °F 41.0 °F 100% 30.06 in 5.0 mi SE 3.5 mph - N/A   Overcast
1:15 AM 41.0 °F 38.0 °F 41.0 °F 100% 30.06 in 5.0 mi SSE 4.6 mph - N/A   Overcast
1:35 AM 41.0 °F 37.1 °F 41.0 °F 100% 30.06 in 5.0 mi SSE 5.8 mph - 0.01 in   Overcast
1:55 AM 41.0 °F 39.0 °F 41.0 °F 100% 30.06 in 4.0 mi SE 3.5 mph - 0.01 in   Overcast
2:15 AM 41.0 °F 37.1 °F 41.0 °F 100% 30.05 in 4.0 mi SSE 5.8 mph - N/A   Overcast
2:35 AM 41.0 °F 37.1 °F 41.0 °F 100% 30.05 in 5.0 mi SSE 5.8 mph - N/A   Overcast
2:55 AM 41.0 °F 38.0 °F 41.0 °F 100% 30.05 in 6.0 mi SSE 4.6 mph - N/A   Overcast
3:15 AM 41.0 °F 38.0 °F 41.0 °F 100% 30.05 in 7.0 mi SSE 4.6 mph - N/A   Overcast
3:35 AM 41.0 °F 37.1 °F 41.0 °F 100% 30.04 in 7.0 mi SSE 5.8 mph - N/A   Overcast
3:55 AM 41.0 °F 39.0 °F 39.2 °F 93% 30.04 in 7.0 mi South 3.5 mph - N/A   Scattered Clouds
4:15 AM 41.0 °F - 39.2 °F 93% 30.04 in 7.0 mi Calm Calm - N/A   Partly Cloudy
4:35 AM 39.2 °F 37.0 °F 39.2 °F 100% 30.04 in 6.0 mi NW 3.5 mph - N/A   Mostly Cloudy
4:55 AM 39.2 °F - 39.2 °F 100% 30.04 in 5.0 mi Calm Calm - N/A   Overcast
5:15 AM 39.2 °F - 39.2 °F 100% 30.04 in 5.0 mi Calm Calm - N/A   Overcast
5:35 AM 39.2 °F 37.0 °F 39.2 °F 100% 30.04 in 5.0 mi NNW 3.5 mph - N/A   Overcast
5:55 AM 39.2 °F 35.9 °F 39.2 °F 100% 30.04 in 4.0 mi WSW 4.6 mph - N/A   Overcast
6:15 AM 41.0 °F 38.0 °F 41.0 °F 100% 30.05 in 7.0 mi WSW 4.6 mph - N/A   Overcast
6:35 AM 41.0 °F - 41.0 °F 100% 30.05 in 7.0 mi Calm Calm - N/A   Overcast
6:55 AM 41.0 °F 39.0 °F 41.0 °F 100% 30.06 in 8.0 mi NNW 3.5 mph - N/A   Overcast
7:15 AM 41.0 °F - 39.2 °F 93% 30.06 in 7.0 mi Calm Calm - N/A   Overcast
7:35 AM 41.0 °F - 41.0 °F 100% 30.06 in 5.0 mi Calm Calm - N/A   Overcast
7:55 AM 41.0 °F - 41.0 °F 100% 30.07 in 7.0 mi Calm Calm - N/A   Overcast
8:15 AM 41.0 °F - 41.0 °F 100% 30.07 in 7.0 mi Calm Calm - N/A   Overcast
8:35 AM 41.0 °F - 41.0 °F 100% 30.07 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
8:55 AM 41.0 °F - 41.0 °F 100% 30.07 in 8.0 mi Calm Calm - N/A   Partly Cloudy
9:15 AM 42.8 °F - 41.0 °F 93% 30.08 in 8.0 mi Calm Calm - N/A   Clear
9:35 AM 44.6 °F - 41.0 °F 87% 30.08 in 9.0 mi Calm Calm - N/A   Clear
10:15 AM 48.2 °F - 41.0 °F 76% 30.07 in 10.0 mi Calm Calm - N/A   Clear
10:35 AM 50.0 °F - 39.2 °F 66% 30.07 in 10.0 mi SW 3.5 mph - N/A   Partly Cloudy
10:55 AM 51.8 °F - 41.0 °F 67% 30.07 in 10.0 mi WSW 5.8 mph - N/A   Partly Cloudy
11:15 AM 51.8 °F - 39.2 °F 62% 30.07 in 10.0 mi WSW 3.5 mph - N/A   Clear
11:35 AM 50.0 °F - 41.0 °F 71% 30.06 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
11:55 AM 50.0 °F - 41.0 °F 71% 30.06 in 10.0 mi NW 5.8 mph - N/A   Overcast
12:15 PM 50.0 °F - 41.0 °F 71% 30.06 in 10.0 mi NW 6.9 mph - N/A   Overcast
12:35 PM 50.0 °F - 41.0 °F 71% 30.05 in 10.0 mi NW 6.9 mph - N/A   Overcast
12:55 PM 50.0 °F - 41.0 °F 71% 30.04 in 10.0 mi NNW 6.9 mph - N/A   Overcast
1:15 PM 50.0 °F - 41.0 °F 71% 30.04 in 10.0 mi NNW 4.6 mph - N/A   Overcast
1:35 PM 51.8 °F - 42.8 °F 71% 30.03 in 10.0 mi NW 5.8 mph - N/A   Overcast
2:15 PM 53.6 °F - 41.0 °F 62% 30.03 in 10.0 mi Calm Calm - N/A   Overcast
2:35 PM 53.6 °F - 41.0 °F 62% 30.03 in 10.0 mi WNW 3.5 mph - N/A   Overcast
2:55 PM 55.4 °F - 41.0 °F 58% 30.03 in 10.0 mi NW 3.5 mph - N/A   Overcast
3:15 PM 55.4 °F - 41.0 °F 58% 30.03 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
3:35 PM 53.6 °F - 39.2 °F 58% 30.04 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
3:55 PM 53.6 °F - 39.2 °F 58% 30.04 in 10.0 mi WNW 4.6 mph - N/A   Clear
4:15 PM 53.6 °F - 39.2 °F 58% 30.03 in 10.0 mi WNW 4.6 mph - N/A   Clear
4:35 PM 51.8 °F - 37.4 °F 58% 30.03 in 10.0 mi WNW 3.5 mph - N/A   Clear
4:55 PM 50.0 °F - 37.4 °F 62% 30.04 in 10.0 mi WNW 3.5 mph - N/A   Clear
5:15 PM 48.2 °F - 39.2 °F 71% 30.03 in 10.0 mi Calm Calm - N/A   Clear
5:35 PM 44.6 °F - 39.2 °F 81% 30.04 in 10.0 mi Calm Calm - N/A   Clear
5:55 PM 41.0 °F 39.0 °F 39.2 °F 93% 30.04 in 10.0 mi North 3.5 mph - N/A   Partly Cloudy
6:15 PM 41.0 °F 39.0 °F 37.4 °F 87% 30.05 in 10.0 mi NNE 3.5 mph - N/A   Partly Cloudy
6:35 PM 41.0 °F 39.0 °F 37.4 °F 87% 30.05 in 10.0 mi NNW 3.5 mph - N/A   Partly Cloudy
6:55 PM 41.0 °F - 37.4 °F 87% 30.06 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:15 PM 39.2 °F - 37.4 °F 93% 30.06 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:35 PM 39.2 °F - 37.4 °F 93% 30.07 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:55 PM 39.2 °F - 37.4 °F 93% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:15 PM 37.4 °F - 37.4 °F 100% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:35 PM 37.4 °F - 37.4 °F 100% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
8:55 PM 37.4 °F 34.9 °F 35.6 °F 93% 30.08 in 10.0 mi ENE 3.5 mph - N/A   Mostly Cloudy
9:15 PM 37.4 °F - 35.6 °F 93% 30.09 in 9.0 mi Calm Calm - N/A   Overcast
9:35 PM 37.4 °F - 37.4 °F 100% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
10:15 PM 37.4 °F - 37.4 °F 100% 30.09 in 9.0 mi Calm Calm - N/A   Overcast
10:35 PM 35.6 °F - 35.6 °F 100% 30.09 in 8.0 mi Calm Calm - N/A   Overcast
10:55 PM 37.4 °F - 37.4 °F 100% 30.10 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
11:15 PM 37.4 °F 34.9 °F 37.4 °F 100% 30.09 in 7.0 mi West 3.5 mph - N/A   Overcast
11:35 PM 37.4 °F - 37.4 °F 100% 30.10 in 8.0 mi Calm Calm - N/A   Overcast
11:55 PM 39.2 °F - 39.2 °F 100% 30.10 in 8.0 mi Calm Calm - N/A   Overcast