Weather History for Petaluma, CA

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Saturday, January 18, 2014

  Actual Average (KAPC) Record (KAPC)
Temperature  
Mean Temperature 48 °F 46 °F  
Max Temperature 68 °F 55 °F 70 °F (2009)
Min Temperature 28 °F 37 °F 24 °F (2001)
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 29 °F    
Average Humidity 62    
Maximum Humidity 100    
Minimum Humidity 20    
Precipitation  
Precipitation 0.00 in - 1.47 in (1973)
Month to date precipitation  
Year to date precipitation  
Since 1 July precipitation  
Sea Level Pressure  
Sea Level Pressure 30.14 in    
Wind  
Wind Speed 2 mph (SSE)    
Max Wind Speed 8 mph    
Max Gust Speed -    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 18, 2014 Rise Set
Actual Time 7:24 AM PST 5:17 PM PST
Civil Twilight 6:55 AM PST 5:46 PM PST
Nautical Twilight 6:23 AM PST 6:18 PM PST
Astronomical Twilight 5:51 AM PST 6:50 PM PST
Moon 8:01 PM PST (1/18) 8:29 AM PST (1/18)
Length of Visible Light 10h 50m
Length of Day
9h 52m
Waning Gibbous, 94% of the Moon is Illuminated
Jan 18
Waning Gibbous
Jan 23
Last Quarter
Jan 30
New
Feb 6
First Quarter
Feb 14
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 35.6 °F - 28.4 °F 75% 30.15 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:35 AM 35.6 °F - 30.2 °F 81% 30.15 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:55 AM 35.6 °F - 32.0 °F 87% 30.14 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:15 AM 35.6 °F - 28.4 °F 75% 30.15 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:35 AM 35.6 °F - 32.0 °F 87% 30.15 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
1:55 AM 32.0 °F - 30.2 °F 93% 30.15 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:15 AM 32.0 °F - 28.4 °F 87% 30.15 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:35 AM 32.0 °F 28.7 °F 28.4 °F 87% 30.16 in 9.0 mi North 3.5 mph - N/A   Scattered Clouds
2:55 AM 32.0 °F - 30.2 °F 93% 30.16 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:15 AM 32.0 °F - 30.2 °F 93% 30.16 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:35 AM 32.0 °F - 30.2 °F 93% 30.16 in 9.0 mi Calm Calm - N/A   Scattered Clouds
3:55 AM 30.2 °F - 28.4 °F 93% 30.16 in 8.0 mi Calm Calm - N/A   Partly Cloudy
4:15 AM 32.0 °F 27.5 °F 30.2 °F 93% 30.16 in 9.0 mi WSW 4.6 mph - N/A   Scattered Clouds
4:35 AM 32.0 °F - 32.0 °F 100% 30.17 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
4:55 AM 28.4 °F - 28.4 °F 100% 30.16 in 8.0 mi Calm Calm - N/A   Scattered Clouds
5:15 AM 28.4 °F - 28.4 °F 100% 30.16 in 8.0 mi Calm Calm - N/A   Partly Cloudy
5:35 AM 32.0 °F 28.7 °F 32.0 °F 100% 30.17 in 8.0 mi NW 3.5 mph - N/A   Scattered Clouds
5:55 AM 32.0 °F 28.7 °F 32.0 °F 100% 30.17 in 8.0 mi West 3.5 mph - N/A   Partly Cloudy
6:15 AM 32.0 °F - 32.0 °F 100% 30.18 in 8.0 mi Calm Calm - N/A   Partly Cloudy
6:35 AM 32.0 °F - 32.0 °F 100% 30.18 in 8.0 mi Calm Calm - N/A   Partly Cloudy
6:55 AM 30.2 °F - 30.2 °F 100% 30.18 in 9.0 mi Calm Calm - N/A   Clear
7:15 AM 28.4 °F - 28.4 °F 100% 30.18 in 9.0 mi Calm Calm - N/A   Clear
7:35 AM 28.4 °F - 28.4 °F 100% 30.18 in 7.0 mi Calm Calm - N/A   Clear
7:55 AM 32.0 °F - 32.0 °F 100% 30.18 in 8.0 mi Calm Calm - N/A   Clear
8:15 AM 32.0 °F - 32.0 °F 100% 30.18 in 7.0 mi Calm Calm - N/A   Clear
8:35 AM 35.6 °F - 35.6 °F 100% 30.18 in 8.0 mi Calm Calm - N/A   Clear
8:55 AM 39.2 °F 35.0 °F 35.6 °F 87% 30.19 in 10.0 mi WNW 5.8 mph - N/A   Clear
9:15 AM 42.8 °F 39.3 °F 35.6 °F 76% 30.20 in 10.0 mi West 5.8 mph - N/A   Clear
9:35 AM 44.6 °F 42.2 °F 35.6 °F 71% 30.21 in 10.0 mi WNW 4.6 mph - N/A   Clear
9:55 AM 46.4 °F 45.2 °F 33.8 °F 62% 30.21 in 10.0 mi West 3.5 mph - N/A   Clear
10:15 AM 50.0 °F - 32.0 °F 50% 30.21 in 10.0 mi Calm Calm - N/A   Clear
10:35 AM 53.6 °F - 33.8 °F 47% 30.21 in 10.0 mi SE 3.5 mph - N/A   Clear
10:55 AM 55.4 °F - 32.0 °F 41% 30.20 in 10.0 mi South 4.6 mph - N/A   Clear
11:15 AM 57.2 °F - 32.0 °F 38% 30.20 in 10.0 mi South 3.5 mph - N/A   Clear
11:35 AM 59.0 °F - 28.4 °F 31% 30.19 in 10.0 mi South 4.6 mph - N/A   Clear
11:55 AM 60.8 °F - 28.4 °F 29% 30.18 in 10.0 mi SSE 5.8 mph - N/A   Clear
12:15 PM 62.6 °F - 28.4 °F 27% 30.16 in 10.0 mi SSE 4.6 mph - N/A   Clear
12:35 PM 62.6 °F - 30.2 °F 30% 30.15 in 10.0 mi SSE 5.8 mph - N/A   Clear
12:55 PM 64.4 °F - 30.2 °F 28% 30.14 in 10.0 mi SSE 3.5 mph - N/A   Clear
1:15 PM 66.2 °F - 28.4 °F 24% 30.13 in 10.0 mi SSE 5.8 mph - N/A   Clear
1:35 PM 66.2 °F - 28.4 °F 24% 30.12 in 10.0 mi SSE 4.6 mph - N/A   Clear
1:55 PM 68.0 °F - 26.6 °F 21% 30.12 in 10.0 mi SE 4.6 mph - N/A   Clear
2:15 PM 68.0 °F - 26.6 °F 21% 30.11 in 10.0 mi SSE 4.6 mph - N/A   Clear
2:35 PM 68.0 °F - 24.8 °F 20% 30.10 in 10.0 mi South 4.6 mph - N/A   Clear
2:55 PM 68.0 °F - 26.6 °F 21% 30.10 in 10.0 mi South 3.5 mph - N/A   Clear
3:15 PM 68.0 °F - 26.6 °F 21% 30.09 in 10.0 mi SE 3.5 mph - N/A   Clear
3:35 PM 68.0 °F - 28.4 °F 23% 30.09 in 10.0 mi SE 4.6 mph - N/A   Clear
3:55 PM 68.0 °F - 28.4 °F 23% 30.09 in 10.0 mi SSE 8.1 mph - N/A   Clear
4:15 PM 68.0 °F - 26.6 °F 21% 30.09 in 10.0 mi SSE 5.8 mph - N/A   Clear
4:35 PM 66.2 °F - 28.4 °F 24% 30.09 in 10.0 mi SSE 8.1 mph - N/A   Clear
4:55 PM 64.4 °F - 28.4 °F 26% 30.09 in 10.0 mi SE 4.6 mph - N/A   Clear
5:15 PM 60.8 °F - 30.2 °F 31% 30.09 in 10.0 mi SE 5.8 mph - N/A   Clear
5:35 PM 57.2 °F - 28.4 °F 33% 30.09 in 10.0 mi East 3.5 mph - N/A   Clear
5:55 PM 55.4 °F - 28.4 °F 36% 30.09 in 10.0 mi Calm Calm - N/A   Clear
6:15 PM 50.0 °F - 28.4 °F 43% 30.09 in 10.0 mi East 5.8 mph - N/A   Clear
6:35 PM 50.0 °F - 26.6 °F 40% 30.09 in 10.0 mi Calm Calm - N/A   Clear
6:55 PM 50.0 °F - 28.4 °F 43% 30.09 in 10.0 mi Calm Calm - N/A   Clear
7:15 PM 48.2 °F - 28.4 °F 46% 30.09 in 10.0 mi Calm Calm - N/A   Clear
7:35 PM 46.4 °F - 28.4 °F 50% 30.10 in 10.0 mi Calm Calm - N/A   Clear
7:55 PM 44.6 °F - 26.6 °F 49% 30.10 in 10.0 mi Calm Calm - N/A   Clear
8:15 PM 44.6 °F - 26.6 °F 49% 30.10 in 10.0 mi Calm Calm - N/A   Clear
8:35 PM 42.8 °F - 26.6 °F 53% 30.10 in 10.0 mi Calm Calm - N/A   Clear
8:55 PM 41.0 °F - 26.6 °F 57% 30.10 in 10.0 mi Calm Calm - N/A   Clear
9:15 PM 41.0 °F - 26.6 °F 57% 30.11 in 10.0 mi Calm Calm - N/A   Clear
9:35 PM 39.2 °F - 28.4 °F 65% 30.12 in 10.0 mi Calm Calm - N/A   Clear
9:55 PM 39.2 °F - 28.4 °F 65% 30.12 in 10.0 mi Calm Calm - N/A   Clear
10:15 PM 39.2 °F - 26.6 °F 61% 30.12 in 10.0 mi Calm Calm - N/A   Clear
10:35 PM 35.6 °F - 26.6 °F 70% 30.12 in 10.0 mi Calm Calm - N/A   Clear
10:55 PM 39.2 °F 37.0 °F 26.6 °F 61% 30.12 in 10.0 mi NNW 3.5 mph - N/A   Clear
11:15 PM 37.4 °F 34.9 °F 26.6 °F 65% 30.12 in 10.0 mi WNW 3.5 mph - N/A   Clear
11:35 PM 35.6 °F - 26.6 °F 70% 30.12 in 10.0 mi Calm Calm - N/A   Clear
11:55 PM 35.6 °F - 26.6 °F 70% 30.12 in 10.0 mi Calm Calm - N/A   Clear