Weather History for Palo Alto, CA

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Tuesday, September 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 66 °F -  
Max Temperature 73 °F 76 °F 95 °F (2000)
Min Temperature 60 °F 53 °F 45 °F (1959)
Cooling Degree Days 2    
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 53 °F    
Average Humidity 59    
Maximum Humidity 82    
Minimum Humidity 41    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 11 mph (NW)    
Max Wind Speed 23 mph    
Max Gust Speed 31 mph    
Visibility 18 miles    
Events      
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

Sep. 17, 2013 Rise Set
Actual Time 6:52 AM PDT 7:12 PM PDT
Civil Twilight 6:26 AM PDT 7:38 PM PDT
Nautical Twilight 5:55 AM PDT 8:09 PM PDT
Astronomical Twilight 5:24 AM PDT 8:40 PM PDT
Moon 6:02 PM PDT (9/17) 4:54 AM PDT (9/17)
Length of Visible Light 13h 12m
Length of Day
12h 20m
Waxing Gibbous, 96% of the Moon is Illuminated
Sep 17
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
6:47 AM 60.8 °F 55.4 °F 82% 29.88 in 15.0 mi Variable 3.5 mph - N/A   Scattered Clouds
7:47 AM 62.6 °F 55.4 °F 77% 29.89 in 15.0 mi Variable 6.9 mph - N/A   Scattered Clouds
9:47 AM 69.8 °F 55.4 °F 60% 29.89 in 15.0 mi NW 10.4 mph - N/A   Scattered Clouds
10:47 AM 71.6 °F 53.6 °F 53% 29.89 in 20.0 mi NW 13.8 mph - N/A   Partly Cloudy
11:47 AM 73.4 °F 53.6 °F 50% 29.89 in 30.0 mi NW 11.5 mph 23.0 mph N/A   Partly Cloudy
12:47 PM 73.4 °F 51.8 °F 47% 29.89 in 30.0 mi WNW 18.4 mph 27.6 mph N/A   Partly Cloudy
1:47 PM 73.4 °F 48.2 °F 41% 29.88 in 30.0 mi NW 20.7 mph 29.9 mph N/A   Partly Cloudy
2:47 PM 71.6 °F 51.8 °F 50% 29.88 in 30.0 mi WNW 23.0 mph 29.9 mph N/A   Partly Cloudy
3:47 PM 69.8 °F 51.8 °F 53% 29.87 in 30.0 mi WNW 20.7 mph 31.1 mph N/A   Partly Cloudy
4:47 PM 69.8 °F 53.6 °F 56% 29.86 in 30.0 mi WNW 20.7 mph 31.1 mph N/A   Partly Cloudy
5:47 PM 69.8 °F 53.6 °F 56% 29.87 in 30.0 mi NW 11.5 mph - N/A   Clear
6:47 PM 66.2 °F 51.8 °F 60% 29.87 in 30.0 mi NW 11.5 mph - N/A   Clear
7:47 PM 64.4 °F 51.8 °F 64% 29.87 in 20.0 mi NW 11.5 mph - N/A   Clear
8:47 PM 60.8 °F 51.8 °F 72% 29.89 in 20.0 mi NNW 6.9 mph - N/A   Clear