Weather History for San Carlos, CA

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Monday, December 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 43 °F -  
Max Temperature 51 °F 56 °F 70 °F (1958)
Min Temperature 35 °F 38 °F 28 °F (1990)
Degree Days  
Heating Degree Days 22    
Moisture  
Dew Point 34 °F    
Average Humidity 76    
Maximum Humidity 93    
Minimum Humidity 38    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.25 in    
Wind  
Wind Speed 2 mph (South)    
Max Wind Speed 7 mph    
Max Gust Speed -    
Visibility 10 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

Dec. 31, 2012 Rise Set
Actual Time 7:23 AM PST 5:01 PM PST
Civil Twilight 6:54 AM PST 5:30 PM PST
Nautical Twilight 6:21 AM PST 6:03 PM PST
Astronomical Twilight 5:49 AM PST 6:34 PM PST
Moon 8:32 PM PST (12/31) 9:12 AM PST (12/31)
Length of Visible Light 10h 35m
Length of Day
9h 37m
Waning Gibbous, 89% of the Moon is Illuminated
Dec 31
Waning Gibbous
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 42.8 °F 38.6 °F 37.4 °F 81% 30.20 in 10.0 mi SE 6.9 mph - N/A   Clear
12:30 AM 41.0 °F 39.0 °F 35.6 °F 81% 30.20 in 10.0 mi SSW 3.5 mph - N/A   Clear
12:55 AM 41.0 °F - 32.0 °F 70% 30.20 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 39.2 °F - 33.8 °F 81% 30.21 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 39.2 °F 37.0 °F 33.8 °F 81% 30.22 in 10.0 mi West 3.5 mph - N/A   Clear
1:55 AM 39.2 °F - 33.8 °F 81% 30.23 in 10.0 mi Calm Calm - N/A   Clear
2:15 AM 39.2 °F - 32.0 °F 75% 30.24 in 10.0 mi Calm Calm - N/A   Clear
2:35 AM 37.4 °F - 33.8 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Clear
2:55 AM 37.4 °F - 33.8 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 39.2 °F - 33.8 °F 81% 30.24 in 10.0 mi Calm Calm - N/A   Clear
3:35 AM 37.4 °F - 32.0 °F 81% 30.24 in 10.0 mi Calm Calm - N/A   Clear
4:15 AM 37.4 °F - 33.8 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Clear
4:35 AM 37.4 °F - 33.8 °F 87% 30.23 in 10.0 mi Calm Calm - N/A   Clear
4:55 AM 37.4 °F - 33.8 °F 87% 30.23 in 10.0 mi Calm Calm - N/A   Clear
5:15 AM 37.4 °F - 32.0 °F 81% 30.23 in 10.0 mi Calm Calm - N/A   Clear
5:35 AM 37.4 °F - 32.0 °F 81% 30.23 in 10.0 mi Calm Calm - N/A   Clear
5:55 AM 37.4 °F - 32.0 °F 81% 30.23 in 10.0 mi Calm Calm - N/A   Clear
6:15 AM 35.6 °F - 32.0 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Clear
6:35 AM 35.6 °F - 32.0 °F 87% 30.25 in 10.0 mi Calm Calm - N/A   Clear
6:50 AM 35.6 °F 32.8 °F 32.0 °F 87% 30.26 in 10.0 mi South 3.5 mph - N/A   Clear
7:47 AM 37.4 °F - 32.0 °F 81% 30.28 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:50 AM 41.0 °F - 32.0 °F 70% 30.29 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:54 AM 46.4 °F 43.5 °F 28.4 °F 50% 30.31 in 10.0 mi SE 5.8 mph - N/A   Scattered Clouds
10:47 AM 46.4 °F 44.3 °F 32.0 °F 57% 30.32 in 10.0 mi East 4.6 mph - N/A   Scattered Clouds
11:47 AM 48.2 °F - 24.8 °F 40% 30.30 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:47 PM 48.2 °F - 26.6 °F 43% 30.27 in 10.0 mi SE 3.5 mph - N/A   Scattered Clouds
1:59 PM 50.0 °F - 26.6 °F 40% 30.26 in 30.0 mi Calm Calm - N/A   Mostly Cloudy
2:49 PM 50.0 °F - 26.6 °F 40% 30.26 in 30.0 mi Calm Calm - N/A   Mostly Cloudy
3:48 PM 51.8 °F - 26.6 °F 38% 30.26 in 30.0 mi Calm Calm - N/A   Mostly Cloudy
7:53 PM 46.4 °F - 39.2 °F 76% 30.27 in 20.0 mi Calm Calm - N/A   Overcast
8:50 PM 46.4 °F - 37.4 °F 71% 30.27 in 15.0 mi Calm Calm - N/A   Overcast
9:15 PM 44.6 °F - 39.2 °F 81% 30.27 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:30 PM 44.6 °F - 39.2 °F 81% 30.28 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:55 PM 44.6 °F 43.1 °F 39.2 °F 81% 30.28 in 10.0 mi SW 3.5 mph - N/A   Partly Cloudy
10:15 PM 44.6 °F 43.1 °F 39.2 °F 81% 30.27 in 10.0 mi SSW 3.5 mph - N/A   Clear
10:30 PM 44.6 °F - 39.2 °F 81% 30.27 in 10.0 mi Calm Calm - N/A   Clear
10:55 PM 42.8 °F - 39.2 °F 87% 30.27 in 10.0 mi Calm Calm - N/A   Clear
11:15 PM 42.8 °F - 39.2 °F 87% 30.28 in 10.0 mi Calm Calm - N/A   Clear
11:35 PM 41.0 °F - 39.2 °F 93% 30.27 in 10.0 mi Calm Calm - N/A   Clear
11:55 PM 41.0 °F - 39.2 °F 93% 30.26 in 10.0 mi Calm Calm - N/A   Clear