Weather History for Ontario, OR

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Monday, December 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 17 °F 26 °F  
Max Temperature 26 °F 34 °F 53 °F (1996)
Min Temperature 7 °F 19 °F -3 °F (1978)
Degree Days  
Heating Degree Days 48 39  
Month to date heating degree days 973 1156  
Since 1 July heating degree days 2197 2581  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1091 852  
Moisture  
Dew Point 12 °F    
Average Humidity 78    
Maximum Humidity 88    
Minimum Humidity 68    
Precipitation  
Precipitation 0.00 in 0.05 in 0.57 in (2002)
Month to date precipitation 0.95 1.68  
Year to date precipitation 8.77 10.06  
Sea Level Pressure  
Sea Level Pressure 30.43 in    
Wind  
Wind Speed 3 mph (West)    
Max Wind Speed 10 mph    
Max Gust Speed 16 mph    
Visibility 7 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 31, 2012 Rise Set
Actual Time 8:22 AM MST 5:20 PM MST
Civil Twilight 7:49 AM MST 5:53 PM MST
Nautical Twilight 7:13 AM MST 6:29 PM MST
Astronomical Twilight 6:38 AM MST 7:04 PM MST
Moon 9:03 PM MST (12/31) 9:59 AM MST (12/31)
Length of Visible Light 10h 03m
Length of Day
8h 57m
Waning Gibbous, 90% 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 (MST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 17.1 °F - 12.0 °F 81% 30.42 in 0.2 mi Calm Calm - N/A   Haze
1:53 AM 18.0 °F - 12.9 °F 81% 30.42 in 0.2 mi Calm Calm - N/A   Haze
2:53 AM 17.1 °F - 12.0 °F 81% 30.43 in 0.5 mi Calm Calm - N/A   Haze
3:17 AM 17.6 °F - 12.2 °F 79% 30.33 in 1.2 mi Calm Calm - N/A   Haze
3:21 AM 17.6 °F - 12.2 °F 79% 30.33 in 2.5 mi Calm Calm - N/A   Haze
3:28 AM 17.6 °F - 12.2 °F 79% 30.34 in 5.0 mi Calm Calm - N/A   Haze
3:43 AM 17.6 °F 12.3 °F 12.2 °F 79% 30.34 in 9.0 mi West 3.5 mph - N/A   Overcast
3:53 AM 18.0 °F - 12.0 °F 78% 30.44 in 5.0 mi Calm Calm - N/A   Haze
4:38 AM 17.6 °F - 12.2 °F 79% 30.33 in 6.0 mi Calm Calm - N/A   Haze
4:53 AM 18.0 °F - 12.0 °F 78% 30.43 in 6.0 mi Calm Calm - N/A   Haze
5:53 AM 19.0 °F - 12.9 °F 77% 30.44 in 5.0 mi Calm Calm - N/A   Haze
6:53 AM 16.0 °F 8.8 °F 10.9 °F 81% 30.45 in 7.0 mi WSW 4.6 mph - N/A   Overcast
7:53 AM 17.1 °F 5.8 °F 10.9 °F 77% 30.44 in 6.0 mi SW 9.2 mph - N/A   Haze
8:36 AM 15.8 °F 10.2 °F 10.4 °F 79% 30.35 in 6.0 mi SW 3.5 mph - N/A   Haze
8:53 AM 16.0 °F 8.8 °F 10.0 °F 77% 30.45 in 7.0 mi SW 4.6 mph - N/A   Overcast
9:53 AM 17.1 °F 6.6 °F 10.9 °F 77% 30.46 in 10.0 mi WSW 8.1 mph - N/A   Overcast
10:14 AM 17.6 °F 10.7 °F 10.4 °F 73% 30.36 in 10.0 mi WSW 4.6 mph - N/A   Overcast
10:53 AM 19.0 °F 13.9 °F 12.9 °F 77% 30.47 in 10.0 mi WNW 3.5 mph - N/A   Overcast
11:53 AM 19.9 °F 14.9 °F 14.0 °F 78% 30.47 in 10.0 mi SW 3.5 mph - N/A   Overcast
12:53 PM 21.9 °F - 16.0 °F 78% 30.44 in 10.0 mi Calm Calm - N/A   Overcast
1:30 PM 21.2 °F - 15.8 °F 80% 30.33 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:53 PM 23.0 °F - 15.1 °F 72% 30.43 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 25.0 °F - 17.1 °F 72% 30.43 in 10.0 mi Calm Calm - N/A   Clear
3:53 PM 26.1 °F 20.5 °F 17.1 °F 69% 30.44 in 10.0 mi NNW 4.6 mph - N/A   Clear
4:53 PM 23.0 °F 18.4 °F 16.0 °F 74% 30.45 in 10.0 mi NNW 3.5 mph - N/A   Clear
6:53 PM 14.0 °F - 10.9 °F 88% 30.47 in 9.0 mi Calm Calm - N/A   Clear
8:53 PM 10.9 °F 4.7 °F 7.0 °F 84% 30.52 in 8.0 mi WSW 3.5 mph - N/A   Clear
10:53 PM 7.0 °F 0.1 °F 3.0 °F 84% 30.56 in 10.0 mi West 3.5 mph - N/A   Clear
11:53 PM 9.0 °F 2.4 °F 3.9 °F 80% 30.57 in 10.0 mi West 3.5 mph - N/A   Clear