Weather History for KPDX - December, 2012

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Wednesday, December 19, 2012

  Actual Average Record
Temperature  
Mean Temperature 44 °F 40 °F  
Max Temperature 51 °F 45 °F 59 °F (1972)
Min Temperature 37 °F 35 °F 14 °F (1964)
Degree Days  
Heating Degree Days 21 25  
Month to date heating degree days 381 458  
Since 1 July heating degree days 1190 1427  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 436 424  
Moisture  
Dew Point 37 °F    
Average Humidity 81    
Maximum Humidity 100    
Minimum Humidity 61    
Precipitation  
Precipitation 0.48 in 0.17 in 1.72 in (1953)
Month to date precipitation 4.96 3.49  
Year to date precipitation 47.84 34.03  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.83 in    
Wind  
Wind Speed 14 mph (SE)    
Max Wind Speed 26 mph    
Max Gust Speed 37 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 19, 2012 Rise Set
Actual Time 7:47 AM PST 4:28 PM PST
Civil Twilight 7:12 AM PST 5:03 PM PST
Nautical Twilight 6:35 AM PST 5:40 PM PST
Astronomical Twilight 5:58 AM PST 6:16 PM PST
Moon 11:38 AM PST (12/19) No Moon Set
Length of Visible Light 9h 50m
Length of Day
8h 41m
Waxing Crescent, 46% of the Moon is Illuminated
Dec 19
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 37.0 °F 31.0 °F 33.1 °F 86% 30.04 in 10.0 mi ESE 8.1 mph - N/A   Overcast
1:53 AM 37.0 °F 29.8 °F 33.1 °F 86% 30.02 in 10.0 mi SE 10.4 mph - 0.00 in Rain Light Rain
2:09 AM 37.4 °F 30.8 °F 33.8 °F 87% 30.02 in 10.0 mi SE 9.2 mph - 0.01 in Rain Light Rain
2:53 AM 37.0 °F 29.8 °F 34.0 °F 89% 30.00 in 10.0 mi SE 10.4 mph - 0.03 in Rain Light Rain
3:53 AM 37.9 °F 30.0 °F 34.0 °F 86% 29.98 in 10.0 mi ESE 12.7 mph - 0.00 in Rain Light Rain
4:53 AM 37.0 °F 29.8 °F 34.0 °F 89% 29.96 in 10.0 mi SE 10.4 mph - 0.00 in   Overcast
5:53 AM 37.0 °F 27.7 °F 35.1 °F 93% 29.93 in 10.0 mi ESE 16.1 mph - 0.00 in   Overcast
6:18 AM 37.4 °F 28.9 °F 35.6 °F 93% 29.93 in 10.0 mi ESE 13.8 mph - N/A   Overcast
6:53 AM 37.9 °F 28.5 °F 35.1 °F 89% 29.92 in 10.0 mi ESE 17.3 mph - 0.00 in   Overcast
7:33 AM 37.4 °F 29.3 °F 35.6 °F 93% 29.90 in 10.0 mi ESE 12.7 mph - 0.01 in Rain Light Rain
7:53 AM 37.9 °F 30.9 °F 35.1 °F 89% 29.91 in 10.0 mi ESE 10.4 mph - 0.01 in Rain Light Rain
8:53 AM 37.9 °F 29.6 °F 36.0 °F 93% 29.89 in 9.0 mi ESE 13.8 mph - 0.04 in Rain Light Rain
9:53 AM 37.0 °F 27.0 °F 37.0 °F 100% 29.88 in 6.0 mi ESE 18.4 mph - 0.04 in Rain Light Rain
10:53 AM 37.9 °F 30.0 °F 37.9 °F 100% 29.86 in 5.0 mi SE 12.7 mph - 0.02 in Rain Light Rain
11:40 AM 37.4 °F 28.9 °F 37.4 °F 100% 29.84 in 10.0 mi ESE 13.8 mph - 0.01 in   Overcast
11:53 AM 39.0 °F 29.9 °F 37.0 °F 93% 29.83 in 10.0 mi ESE 17.3 mph - 0.01 in Rain Light Rain
12:53 PM 39.0 °F 31.0 °F 37.0 °F 93% 29.80 in 10.0 mi ESE 13.8 mph - 0.01 in Rain Light Rain
1:53 PM 39.9 °F 32.5 °F 37.9 °F 93% 29.77 in 10.0 mi ESE 12.7 mph - 0.00 in Rain Light Rain
2:53 PM 41.0 °F 33.1 °F 37.0 °F 86% 29.75 in 10.0 mi ESE 15.0 mph - 0.00 in Rain Light Rain
3:53 PM 46.9 °F - 37.0 °F 68% 29.73 in 10.0 mi South 19.6 mph 26.5 mph 0.00 in   Overcast
4:53 PM 50.0 °F - 37.0 °F 61% 29.69 in 10.0 mi South 15.0 mph 31.1 mph 0.00 in Rain Light Rain
5:53 PM 50.0 °F - 37.9 °F 63% 29.71 in 10.0 mi SSW 16.1 mph 32.2 mph 0.00 in Rain Light Rain
6:53 PM 46.9 °F - 39.9 °F 77% 29.73 in 7.0 mi SSW 9.2 mph - 0.06 in Rain Light Rain
7:53 PM 42.1 °F 35.2 °F 39.9 °F 92% 29.71 in 6.0 mi ESE 12.7 mph - 0.06 in Rain Rain
8:53 PM 41.0 °F 33.1 °F 39.0 °F 93% 29.68 in 10.0 mi ESE 15.0 mph - 0.09 in Rain Light Rain
9:53 PM 41.0 °F 33.5 °F 39.0 °F 93% 29.65 in 8.0 mi ESE 13.8 mph - 0.02 in Rain Light Rain
10:53 PM 42.1 °F 34.2 °F 39.9 °F 92% 29.65 in 8.0 mi ESE 16.1 mph - 0.05 in Rain Light Rain
11:53 PM 42.1 °F 35.2 °F 41.0 °F 96% 29.63 in 9.0 mi ESE 12.7 mph - 0.03 in Rain Light Rain