Weather History for Petaluma, CA

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Thursday, February 21, 2013

  Actual Average (KAPC) Record (KAPC)
Temperature  
Mean Temperature 48 °F 50 °F  
Max Temperature 59 °F 61 °F 70 °F (2002)
Min Temperature 37 °F 39 °F 30 °F (2006)
Degree Days  
Heating Degree Days 17    
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 36 °F    
Average Humidity 71    
Maximum Humidity 93    
Minimum Humidity 36    
Precipitation  
Precipitation 0.00 in - 1.72 in (1917)
Month to date precipitation  
Year to date precipitation  
Since 1 July precipitation  
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 7 mph (WNW)    
Max Wind Speed 16 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Feb. 21, 2013 Rise Set
Actual Time 6:52 AM PST 5:55 PM PST
Civil Twilight 6:26 AM PST 6:22 PM PST
Nautical Twilight 5:55 AM PST 6:53 PM PST
Astronomical Twilight 5:24 AM PST 7:23 PM PST
Moon 2:17 PM PST (2/21) 3:59 AM PST (2/21)
Length of Visible Light 11h 56m
Length of Day
11h 02m
Waxing Gibbous, 84% of the Moon is Illuminated
Feb 21
Waxing Gibbous
Feb 25
Full
Mar 4
Last Quarter
Mar 11
New
Mar 19
First 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 39.2 °F 33.6 °F 37.4 °F 93% 30.08 in 10.0 mi WNW 8.1 mph - N/A   Clear
12:35 AM 39.2 °F 34.2 °F 35.6 °F 87% 30.08 in 10.0 mi WNW 6.9 mph - N/A   Clear
12:55 AM 39.2 °F 35.0 °F 35.6 °F 87% 30.08 in 10.0 mi WNW 5.8 mph - N/A   Scattered Clouds
1:15 AM 37.4 °F - 33.8 °F 87% 30.08 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:35 AM 39.2 °F 34.2 °F 35.6 °F 87% 30.08 in 10.0 mi West 6.9 mph - N/A   Partly Cloudy
1:55 AM 39.2 °F 35.9 °F 35.6 °F 87% 30.08 in 10.0 mi West 4.6 mph - N/A   Clear
2:15 AM 39.2 °F 33.6 °F 33.8 °F 81% 30.08 in 10.0 mi WSW 8.1 mph - N/A   Clear
2:35 AM 39.2 °F 34.2 °F 33.8 °F 81% 30.08 in 10.0 mi West 6.9 mph - N/A   Clear
2:55 AM 39.2 °F 34.2 °F 33.8 °F 81% 30.08 in 10.0 mi West 6.9 mph - N/A   Clear
3:15 AM 39.2 °F 34.2 °F 32.0 °F 75% 30.07 in 10.0 mi West 6.9 mph - N/A   Clear
3:35 AM 37.4 °F 32.1 °F 32.0 °F 81% 30.07 in 10.0 mi West 6.9 mph - N/A   Clear
4:15 AM 37.4 °F 32.1 °F 33.8 °F 87% 30.08 in 10.0 mi West 6.9 mph - N/A   Clear
4:35 AM 37.4 °F 33.8 °F 32.0 °F 81% 30.08 in 10.0 mi West 4.6 mph - N/A   Clear
4:55 AM 39.2 °F 37.0 °F 32.0 °F 75% 30.10 in 10.0 mi WSW 3.5 mph - N/A   Clear
5:15 AM 37.4 °F 34.9 °F 32.0 °F 81% 30.09 in 10.0 mi WSW 3.5 mph - N/A   Clear
5:35 AM 37.4 °F 33.8 °F 32.0 °F 81% 30.10 in 10.0 mi West 4.6 mph - N/A   Clear
5:55 AM 41.0 °F 37.1 °F 35.6 °F 81% 30.10 in 10.0 mi NW 5.8 mph - N/A   Clear
6:15 AM 41.0 °F 36.4 °F 35.6 °F 81% 30.11 in 10.0 mi NNW 6.9 mph - N/A   Clear
6:35 AM 37.4 °F 30.8 °F 33.8 °F 87% 30.11 in 10.0 mi WNW 9.2 mph - N/A   Clear
6:55 AM 37.4 °F 30.8 °F 32.0 °F 81% 30.11 in 10.0 mi West 9.2 mph - N/A   Clear
7:15 AM 37.4 °F 32.1 °F 33.8 °F 87% 30.12 in 10.0 mi West 6.9 mph - N/A   Clear
7:35 AM 39.2 °F 35.0 °F 33.8 °F 81% 30.13 in 10.0 mi NW 5.8 mph - N/A   Clear
8:15 AM 42.8 °F 37.5 °F 35.6 °F 76% 30.14 in 10.0 mi NW 9.2 mph - N/A   Clear
8:35 AM 44.6 °F 39.7 °F 35.6 °F 71% 30.15 in 10.0 mi NW 9.2 mph - N/A   Clear
8:55 AM 46.4 °F 41.1 °F 35.6 °F 66% 30.15 in 10.0 mi WNW 11.5 mph 19.6 mph N/A   Clear
9:15 AM 46.4 °F 40.4 °F 35.6 °F 66% 30.16 in 10.0 mi West 13.8 mph - N/A   Clear
9:35 AM 48.2 °F - 37.4 °F 66% 30.16 in 10.0 mi NW 5.8 mph - N/A   Clear
10:15 AM 50.0 °F - 35.6 °F 58% 30.18 in 10.0 mi West 9.2 mph - N/A   Clear
10:35 AM 53.6 °F - 35.6 °F 51% 30.18 in 10.0 mi NW 5.8 mph - N/A   Clear
10:55 AM 53.6 °F - 35.6 °F 51% 30.18 in 10.0 mi West 6.9 mph - N/A   Clear
11:15 AM 55.4 °F - 35.6 °F 47% 30.17 in 10.0 mi WNW 3.5 mph - N/A   Clear
11:35 AM 55.4 °F - 35.6 °F 47% 30.17 in 10.0 mi WNW 5.8 mph - N/A   Clear
11:55 AM 55.4 °F - 35.6 °F 47% 30.17 in 10.0 mi WSW 5.8 mph - N/A   Clear
12:15 PM 57.2 °F - 35.6 °F 44% 30.16 in 10.0 mi West 6.9 mph - N/A   Clear
12:35 PM 57.2 °F - 35.6 °F 44% 30.15 in 10.0 mi West 8.1 mph 16.1 mph N/A   Clear
12:55 PM 57.2 °F - 37.4 °F 48% 30.15 in 10.0 mi WNW 9.2 mph 16.1 mph N/A   Clear
1:15 PM 57.2 °F - 37.4 °F 48% 30.14 in 10.0 mi West 11.5 mph - N/A   Clear
1:35 PM 59.0 °F - 35.6 °F 42% 30.14 in 10.0 mi West 12.7 mph 19.6 mph N/A   Clear
1:55 PM 59.0 °F - 35.6 °F 42% 30.14 in 10.0 mi West 8.1 mph - N/A   Clear
2:15 PM 59.0 °F - 35.6 °F 42% 30.13 in 10.0 mi West 12.7 mph 19.6 mph N/A   Clear
2:35 PM 59.0 °F - 32.0 °F 36% 30.13 in 10.0 mi West 16.1 mph 20.7 mph N/A   Clear
2:55 PM 57.2 °F - 35.6 °F 44% 30.13 in 10.0 mi West 16.1 mph 20.7 mph N/A   Clear
3:15 PM 57.2 °F - 35.6 °F 44% 30.13 in 10.0 mi West 15.0 mph 19.6 mph N/A   Clear
3:35 PM 57.2 °F - 39.2 °F 51% 30.12 in 10.0 mi West 12.7 mph 16.1 mph N/A   Clear
3:55 PM 55.4 °F - 37.4 °F 51% 30.12 in 10.0 mi West 12.7 mph 20.7 mph N/A   Clear
4:15 PM 55.4 °F - 37.4 °F 51% 30.13 in 10.0 mi WNW 11.5 mph 16.1 mph N/A   Clear
4:35 PM 55.4 °F - 37.4 °F 51% 30.12 in 10.0 mi NW 6.9 mph - N/A   Clear
4:55 PM 53.6 °F - 39.2 °F 58% 30.14 in 10.0 mi NW 4.6 mph - N/A   Clear
5:15 PM 53.6 °F - 39.2 °F 58% 30.14 in 10.0 mi NW 4.6 mph - N/A   Clear
5:35 PM 50.0 °F - 39.2 °F 66% 30.13 in 10.0 mi WNW 5.8 mph - N/A   Clear
5:55 PM 50.0 °F - 39.2 °F 66% 30.14 in 10.0 mi WNW 6.9 mph - N/A   Clear
6:15 PM 48.2 °F - 39.2 °F 71% 30.14 in 10.0 mi West 6.9 mph - N/A   Clear
6:35 PM 46.4 °F 44.3 °F 39.2 °F 76% 30.14 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
6:55 PM 44.6 °F - 39.2 °F 81% 30.15 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:15 PM 44.6 °F 42.2 °F 39.2 °F 81% 30.15 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
7:35 PM 44.6 °F 42.2 °F 39.2 °F 81% 30.15 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
7:55 PM 42.8 °F - 39.2 °F 87% 30.15 in 10.0 mi Calm Calm - N/A   Overcast
8:15 PM 41.0 °F - 37.4 °F 87% 30.16 in 10.0 mi Calm Calm - N/A   Overcast
8:35 PM 42.8 °F 41.1 °F 39.2 °F 87% 30.15 in 10.0 mi NW 3.5 mph - N/A   Mostly Cloudy
8:55 PM 39.2 °F 33.6 °F 37.4 °F 93% 30.16 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
9:15 PM 42.8 °F 39.3 °F 39.2 °F 87% 30.16 in 10.0 mi WNW 5.8 mph - N/A   Clear
9:35 PM 41.0 °F 39.0 °F 39.2 °F 93% 30.17 in 10.0 mi WNW 3.5 mph - N/A   Clear
9:55 PM 42.8 °F 39.3 °F 39.2 °F 87% 30.17 in 10.0 mi West 5.8 mph - N/A   Clear
10:15 PM 42.8 °F - 37.4 °F 81% 30.18 in 10.0 mi Calm Calm - N/A   Clear
10:35 PM 41.0 °F - 37.4 °F 87% 30.18 in 10.0 mi Calm Calm - N/A   Clear
10:55 PM 39.2 °F 37.0 °F 37.4 °F 93% 30.18 in 10.0 mi ENE 3.5 mph - N/A   Clear
11:15 PM 39.2 °F 35.9 °F 37.4 °F 93% 30.18 in 10.0 mi North 4.6 mph - N/A   Clear
11:35 PM 39.2 °F 37.0 °F 37.4 °F 93% 30.19 in 10.0 mi NNW 3.5 mph - N/A   Partly Cloudy
11:55 PM 39.2 °F 35.9 °F 37.4 °F 93% 30.19 in 10.0 mi NW 4.6 mph - N/A   Partly Cloudy