Weather History for Hayward, CA

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Thursday, December 20, 2012

  Actual Average Record
Temperature  
Mean Temperature 47 °F 50 °F  
Max Temperature 59 °F 57 °F 71 °F (1999)
Min Temperature 34 °F 42 °F -1 °F (2013)
Degree Days  
Heating Degree Days 18    
Month to date heating degree days 261  
Since 1 July heating degree days 689  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 191  
Moisture  
Dew Point 31 °F    
Average Humidity 56    
Maximum Humidity 75    
Minimum Humidity 36    
Precipitation  
Precipitation 0.00 in - 0.92 in (2001)
Month to date precipitation 1.26  
Year to date precipitation 13.49  
Since 1 July precipitation 4.37  
Sea Level Pressure  
Sea Level Pressure 30.14 in    
Wind  
Wind Speed 10 mph (SE)    
Max Wind Speed 23 mph    
Max Gust Speed 29 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 20, 2012 Rise Set
Actual Time 7:19 AM PST 4:53 PM PST
Civil Twilight 6:50 AM PST 5:22 PM PST
Nautical Twilight 6:17 AM PST 5:55 PM PST
Astronomical Twilight 5:45 AM PST 6:27 PM PST
Moon 12:08 PM PST (12/20) 12:17 AM PST (12/20)
Length of Visible Light 10h 32m
Length of Day
9h 33m
First Quarter, 56% of the Moon is Illuminated
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 36.0 °F 30.3 °F 28.0 °F 73% 30.25 in 10.0 mi East 6.9 mph - N/A   Clear
1:54 AM 37.0 °F 32.4 °F 27.0 °F 67% 30.24 in 10.0 mi East 5.8 mph - N/A   Clear
2:54 AM 37.0 °F 34.5 °F 27.0 °F 67% 30.22 in 10.0 mi East 3.5 mph - N/A   Clear
3:54 AM 42.1 °F 36.6 °F 26.1 °F 53% 30.22 in 10.0 mi SE 9.2 mph - N/A   Clear
4:54 AM 39.0 °F 34.8 °F 26.1 °F 60% 30.22 in 10.0 mi SSE 5.8 mph - N/A   Clear
5:54 AM 36.0 °F 33.3 °F 27.0 °F 70% 30.22 in 10.0 mi East 3.5 mph - N/A   Clear
6:54 AM 37.0 °F 33.3 °F 27.0 °F 67% 30.23 in 10.0 mi ESE 4.6 mph - N/A   Clear
7:54 AM 39.0 °F 33.4 °F 28.0 °F 65% 30.22 in 10.0 mi SE 8.1 mph - N/A   Clear
8:54 AM 45.0 °F 39.7 °F 28.9 °F 53% 30.22 in 10.0 mi SE 10.4 mph - N/A   Clear
9:54 AM 51.1 °F - 30.9 °F 46% 30.21 in 10.0 mi SSE 8.1 mph - N/A   Clear
10:54 AM 55.0 °F - 33.1 °F 43% 30.19 in 10.0 mi SSE 13.8 mph - N/A   Clear
11:54 AM 55.9 °F - 33.1 °F 42% 30.16 in 10.0 mi South 16.1 mph - N/A   Clear
12:54 PM 57.0 °F - 34.0 °F 42% 30.11 in 10.0 mi SSE 18.4 mph 25.3 mph N/A   Clear
1:54 PM 57.9 °F - 32.0 °F 37% 30.09 in 10.0 mi SSE 15.0 mph 24.2 mph N/A   Scattered Clouds
2:54 PM 57.0 °F - 30.9 °F 37% 30.07 in 10.0 mi SE 16.1 mph - N/A   Mostly Cloudy
3:54 PM 57.0 °F - 37.0 °F 47% 30.06 in 10.0 mi SSE 13.8 mph 20.7 mph N/A   Clear
4:54 PM 55.9 °F - 36.0 °F 47% 30.06 in 10.0 mi South 12.7 mph - N/A   Overcast
5:54 PM 55.0 °F - 37.0 °F 51% 30.06 in 10.0 mi SSE 9.2 mph - N/A   Mostly Cloudy
6:54 PM 54.0 °F - 34.0 °F 47% 30.06 in 10.0 mi SE 9.2 mph - N/A   Overcast
7:54 PM 54.0 °F - 32.0 °F 43% 30.07 in 10.0 mi SSE 9.2 mph - N/A   Overcast
8:54 PM 54.0 °F - 34.0 °F 47% 30.06 in 10.0 mi SE 10.4 mph - N/A   Mostly Cloudy
9:54 PM 53.1 °F - 32.0 °F 45% 30.06 in 10.0 mi SSE 15.0 mph 20.7 mph N/A   Clear
10:54 PM 51.1 °F - 32.0 °F 48% 30.05 in 10.0 mi SSE 13.8 mph - N/A   Clear
11:54 PM 51.1 °F - 34.0 °F 52% 30.04 in 10.0 mi SSE 11.5 mph - N/A   Clear