Weather History for Ontario, CA

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Monday, December 10, 2012

  Actual Average Record
Temperature  
Mean Temperature 60 °F 54 °F  
Max Temperature 75 °F 66 °F 82 °F (2004)
Min Temperature 45 °F 43 °F 31 °F (2013)
Degree Days  
Heating Degree Days 5 11  
Month to date heating degree days 48 104  
Since 1 July heating degree days 161 326  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 2163 1705  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 34 °F    
Average Humidity 47    
Maximum Humidity 77    
Minimum Humidity 16    
Precipitation  
Precipitation 0.00 in 0.03 in 0.08 in (2006)
Month to date precipitation 0.46 0.40  
Year to date precipitation 6.68 13.12  
Since 1 July precipitation 1.19 2.74  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Year to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 2 mph (NW)    
Max Wind Speed 8 mph    
Max Gust Speed 16 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 10, 2012 Rise Set
Actual Time 6:45 AM PST 4:41 PM PST
Civil Twilight 6:17 AM PST 5:09 PM PST
Nautical Twilight 5:46 AM PST 5:40 PM PST
Astronomical Twilight 5:16 AM PST 6:10 PM PST
Moon 3:39 AM PST (12/10) 2:30 PM PST (12/10)
Length of Visible Light 10h 51m
Length of Day
9h 55m
Waning Crescent, 9% of the Moon is Illuminated
Dec 10
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
12:53 AM 50.0 °F 42.1 °F 74% 30.11 in 8.0 mi Calm Calm - N/A   Partly Cloudy
1:53 AM 48.9 °F 41.0 °F 74% 30.11 in 7.0 mi NNW 5.8 mph - N/A   Clear
2:53 AM 48.9 °F 39.0 °F 69% 30.11 in 10.0 mi NNE 5.8 mph - N/A   Clear
3:53 AM 50.0 °F 37.0 °F 61% 30.10 in 10.0 mi North 3.5 mph - N/A   Clear
4:53 AM 50.0 °F 35.6 °F 58% 30.11 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 51.1 °F 35.1 °F 54% 30.11 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:53 AM 46.0 °F 36.0 °F 68% 30.12 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 54.0 °F 39.9 °F 59% 30.12 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 61.0 °F 28.9 °F 30% 30.13 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 64.9 °F 28.9 °F 26% 30.13 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 70.0 °F 28.0 °F 21% 30.12 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 72.0 °F 27.0 °F 19% 30.09 in 10.0 mi Calm Calm - N/A   Partly Cloudy
12:53 PM 73.9 °F 26.1 °F 17% 30.06 in 10.0 mi West 3.5 mph - N/A   Clear
1:53 PM 73.9 °F 26.1 °F 17% 30.04 in 10.0 mi West 4.6 mph - N/A   Clear
2:53 PM 75.0 °F 27.0 °F 17% 30.03 in 10.0 mi WNW 5.8 mph - N/A   Clear
3:53 PM 73.9 °F 28.0 °F 18% 30.02 in 10.0 mi WSW 4.6 mph - N/A   Clear
4:53 PM 68.0 °F 33.1 °F 27% 30.03 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
5:53 PM 64.0 °F 34.0 °F 33% 30.04 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:53 PM 62.1 °F 35.1 °F 37% 30.06 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
7:53 PM 60.1 °F 36.0 °F 41% 30.05 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:53 PM 55.9 °F 37.0 °F 49% 30.05 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:53 PM 55.0 °F 37.9 °F 53% 30.05 in 10.0 mi NNE 8.1 mph - N/A   Scattered Clouds
10:53 PM 54.0 °F 37.9 °F 55% 30.04 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:53 PM 52.0 °F 37.0 °F 57% 30.04 in 10.0 mi NNE 5.8 mph - N/A   Partly Cloudy