Weather History for Palo Alto, CA

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Wednesday, December 12, 2012

  Actual Average Record
Temperature  
Mean Temperature 50 °F -  
Max Temperature 55 °F 59 °F 72 °F (1958)
Min Temperature 44 °F 36 °F 25 °F (1972)
Degree Days  
Heating Degree Days 14    
Moisture  
Dew Point 44 °F    
Average Humidity 77    
Maximum Humidity 87    
Minimum Humidity 63    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 6 mph (West)    
Max Wind Speed 13 mph    
Max Gust Speed 21 mph    
Visibility 16 miles    
Events Rain    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 12, 2012 Rise Set
Actual Time 7:14 AM PST 4:50 PM PST
Civil Twilight 6:44 AM PST 5:20 PM PST
Nautical Twilight 6:12 AM PST 5:52 PM PST
Astronomical Twilight 5:40 AM PST 6:24 PM PST
Moon 6:24 AM PST (12/12) 4:33 PM PST (12/12)
Length of Visible Light 10h 35m
Length of Day
9h 36m
Waning Crescent, 0% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
6:47 AM 50.0 °F 46.4 °F 87% 29.87 in 10.0 mi West 4.6 mph - N/A Rain Light Rain
7:47 AM 50.0 °F 46.4 °F 87% 29.88 in 10.0 mi West 4.6 mph - N/A Rain Light Rain
8:47 AM 50.0 °F 46.4 °F 87% 29.90 in 15.0 mi WSW 5.8 mph - N/A   Mostly Cloudy
9:47 AM 53.6 °F 46.4 °F 77% 29.92 in 8.0 mi NW 12.7 mph 20.7 mph N/A   Mostly Cloudy
10:47 AM 51.8 °F 46.4 °F 82% 29.91 in 10.0 mi SSW 6.9 mph - N/A   Scattered Clouds
11:47 AM 53.6 °F 44.6 °F 72% 29.90 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
12:47 PM 51.8 °F 42.8 °F 71% 29.89 in 15.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
1:47 PM 53.6 °F 42.8 °F 67% 29.87 in 20.0 mi WNW 12.7 mph - N/A   Mostly Cloudy
2:47 PM 55.4 °F 42.8 °F 63% 29.87 in 20.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
3:47 PM 55.4 °F 42.8 °F 63% 29.87 in 20.0 mi West 9.2 mph - N/A   Scattered Clouds
4:47 PM 50.0 °F 41.0 °F 71% 29.87 in 20.0 mi WNW 6.9 mph - N/A   Scattered Clouds
5:47 PM 48.2 °F 42.8 °F 82% 29.87 in 20.0 mi Calm Calm - N/A   Scattered Clouds
6:47 PM 50.0 °F 41.0 °F 71% 29.88 in 20.0 mi Calm Calm - N/A   Partly Cloudy
7:47 PM 46.4 °F 41.0 °F 81% 29.88 in 20.0 mi Calm Calm - N/A   Partly Cloudy
8:47 PM 44.6 °F 41.0 °F 87% 29.89 in 20.0 mi Calm Calm - N/A   Partly Cloudy