Weather History for Concord, CA

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Friday, December 21, 2012

  Actual Average Record
Temperature  
Mean Temperature 54 °F 47 °F  
Max Temperature 58 °F 55 °F 69 °F (1999)
Min Temperature 50 °F 40 °F 29 °F (2011)
Degree Days  
Heating Degree Days 11    
Month to date heating degree days 329  
Since 1 July heating degree days 710  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 791  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 45 °F    
Average Humidity 72    
Maximum Humidity 100    
Minimum Humidity 44    
Precipitation  
Precipitation 0.23 in - 0.46 in (2006)
Month to date precipitation 3.00  
Year to date precipitation 17.23  
Since 1 July precipitation 7.56  
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 9 mph (South)    
Max Wind Speed 26 mph    
Max Gust Speed 32 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Dec. 21, 2012 Rise Set
Actual Time 7:20 AM PST 4:52 PM PST
Civil Twilight 6:51 AM PST 5:22 PM PST
Nautical Twilight 6:18 AM PST 5:55 PM PST
Astronomical Twilight 5:46 AM PST 6:27 PM PST
Moon 12:38 PM PST (12/21) 1:16 AM PST (12/21)
Length of Visible Light 10h 30m
Length of Day
9h 31m
Waxing Gibbous, 66% of the Moon is Illuminated
Dec 21
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 50.0 °F 33.1 °F 52% 29.95 in 10.0 mi South 9.2 mph - N/A   Clear
1:53 AM 51.1 °F 36.0 °F 56% 29.94 in 10.0 mi SSE 11.5 mph 19.6 mph N/A   Mostly Cloudy
2:53 AM 51.1 °F 36.0 °F 56% 29.93 in 10.0 mi South 5.8 mph 18.4 mph N/A   Overcast
4:53 AM 52.0 °F 36.0 °F 54% 29.89 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
5:53 AM 52.0 °F 36.0 °F 54% 29.88 in 10.0 mi South 12.7 mph - N/A   Mostly Cloudy
6:53 AM 53.1 °F 37.0 °F 55% 29.89 in 10.0 mi South 12.7 mph 23.0 mph N/A   Overcast
7:53 AM 53.1 °F 39.0 °F 59% 29.86 in 10.0 mi South 16.1 mph 25.3 mph N/A   Overcast
8:53 AM 54.0 °F 39.0 °F 57% 29.88 in 10.0 mi South 15.0 mph 23.0 mph N/A   Scattered Clouds
9:53 AM 55.0 °F 41.0 °F 59% 29.88 in 10.0 mi South 17.3 mph 29.9 mph 0.00 in Rain Light Rain
10:53 AM 51.1 °F 44.1 °F 77% 29.89 in 8.0 mi South 13.8 mph 24.2 mph 0.02 in Rain Light Rain
11:53 AM 54.0 °F 44.1 °F 69% 29.87 in 10.0 mi South 18.4 mph 26.5 mph 0.01 in Rain Light Rain
12:53 PM 55.0 °F 46.0 °F 72% 29.84 in 10.0 mi South 13.8 mph 25.3 mph 0.00 in Rain Light Rain
1:53 PM 55.9 °F 48.0 °F 75% 29.84 in 10.0 mi Variable 6.9 mph 17.3 mph 0.00 in Rain Light Rain
2:53 PM 57.0 °F 46.9 °F 69% 29.84 in 10.0 mi South 6.9 mph - 0.00 in Rain Light Rain
3:53 PM 57.0 °F 46.9 °F 69% 29.84 in 10.0 mi South 9.2 mph 18.4 mph 0.00 in Rain Light Rain
4:20 PM 55.4 °F 46.4 °F 72% 29.88 in 10.0 mi South 13.8 mph 20.7 mph 0.00 in Rain Light Rain
4:53 PM 53.1 °F 50.0 °F 89% 29.86 in 2.5 mi SSW 9.2 mph - 0.00 in   Overcast
5:53 PM 53.1 °F 50.0 °F 89% 29.87 in 7.0 mi South 4.6 mph - 0.02 in   Overcast
6:53 PM 53.1 °F 50.0 °F 89% 29.87 in 10.0 mi SSE 3.5 mph - N/A   Overcast
7:29 PM 53.6 °F 50.0 °F 88% 29.91 in 10.0 mi Calm Calm - N/A   Overcast
7:53 PM 53.1 °F 48.9 °F 86% 29.88 in 10.0 mi South 3.5 mph - N/A   Overcast
8:53 PM 52.0 °F 51.1 °F 97% 29.87 in 3.0 mi Calm Calm - 0.06 in Rain Light Rain
9:10 PM 51.8 °F 51.8 °F 100% 29.92 in 4.0 mi Calm Calm - 0.02 in Rain Light Rain
9:26 PM 51.8 °F 51.8 °F 100% 29.91 in 5.0 mi Calm Calm - 0.04 in Rain Light Rain
9:53 PM 52.0 °F 51.1 °F 97% 29.87 in 4.0 mi South 4.6 mph - 0.07 in Rain Rain
10:53 PM 51.1 °F 51.1 °F 100% 29.85 in 8.0 mi SSE 3.5 mph - 0.05 in Rain Light Rain
11:27 PM 51.8 °F 48.2 °F 88% 29.88 in 10.0 mi SSE 5.8 mph - 0.00 in   Mostly Cloudy
11:53 PM 53.1 °F 48.9 °F 86% 29.83 in 10.0 mi SSE 11.5 mph 17.3 mph 0.00 in   Overcast