Portland, OR

9:48 AM PDT on June 21, 2018 (GMT -0700)
Portland International

Weather History for KPDX - December, 2017

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Thursday, December 7, 2017

  Actual Average Record
Temperature  
Mean Temperature 45 °F 41 °F  
Max Temperature 50 °F 47 °F 63 °F (2015)
Min Temperature 40 °F 36 °F 15 °F (2013)
Degree Days  
Heating Degree Days 20 24  
Month to date heating degree days 145 162  
Since 1 July heating degree days 1070 1131  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 700 424  
Moisture  
Dew Point 29 °F    
Average Humidity 54    
Maximum Humidity 62    
Minimum Humidity 46    
Precipitation  
Precipitation 0.00 in 0.19 in 2.67 in (2015)
Month to date precipitation 0.37 1.38  
Year to date precipitation 43.08 31.92  
Sea Level Pressure  
Sea Level Pressure 30.53 in    
Wind  
Wind Speed 18 mph (ESE)    
Max Wind Speed 26 mph    
Max Gust Speed 35 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Dec. 07, 2017 Rise Set
Actual Time 7:37 AM PST 4:26 PM PST
Civil Twilight 7:03 AM PST 5:00 PM PST
Nautical Twilight 6:25 AM PST 5:38 PM PST
Astronomical Twilight 5:49 AM PST 6:13 PM PST
Moon 9:25 PM PST (12/7) 11:15 AM PST (12/7)
Length of Visible Light 9h 57m
Length of Day
8h 49m
Waning Gibbous, 77% of the Moon is Illuminated
Dec 7
Waning Gibbous
Dec 9
Last Quarter
Dec 17
New
Dec 26
First Quarter
Jan 1
Full

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 45.0 °F 36.4 °F 28.0 °F 52% 30.52 in 10.0 mi East 23.0 mph - N/A   Clear
1:53 AM 43.0 °F 34.5 °F 28.9 °F 58% 30.51 in 10.0 mi ESE 19.6 mph 26.5 mph N/A   Clear
2:53 AM 44.1 °F 36.5 °F 28.9 °F 55% 30.51 in 10.0 mi ESE 17.3 mph 24.2 mph N/A   Clear
3:53 AM 42.1 °F 34.2 °F 30.0 °F 62% 30.51 in 10.0 mi ESE 16.1 mph - N/A   Clear
4:53 AM 42.1 °F 33.6 °F 30.0 °F 62% 30.51 in 10.0 mi ESE 18.4 mph - N/A   Clear
5:53 AM 42.1 °F 33.9 °F 30.0 °F 62% 30.52 in 10.0 mi ESE 17.3 mph - N/A   Clear
6:53 AM 43.0 °F 38.2 °F 28.9 °F 58% 30.52 in 10.0 mi ENE 8.1 mph 20.7 mph N/A   Clear
7:53 AM 42.1 °F 35.7 °F 28.9 °F 60% 30.53 in 10.0 mi ESE 11.5 mph - N/A   Clear
8:53 AM 44.1 °F 37.7 °F 30.0 °F 58% 30.54 in 10.0 mi East 12.7 mph 23.0 mph N/A   Clear
9:53 AM 46.9 °F - 30.0 °F 52% 30.54 in 10.0 mi East 17.3 mph 27.6 mph N/A   Clear
10:53 AM 48.9 °F - 30.0 °F 48% 30.53 in 10.0 mi East 20.7 mph 25.3 mph N/A   Clear
11:53 AM 50.0 °F - 30.0 °F 46% 30.52 in 10.0 mi East 19.6 mph - N/A   Clear
12:53 PM 50.0 °F - 30.0 °F 46% 30.51 in 10.0 mi ESE 18.4 mph 27.6 mph N/A   Clear
1:53 PM 48.9 °F - 30.0 °F 48% 30.49 in 10.0 mi ESE 20.7 mph - N/A   Partly Cloudy
2:53 PM 48.0 °F - 28.9 °F 48% 30.50 in 10.0 mi ESE 17.3 mph - N/A   Partly Cloudy
3:53 PM 45.0 °F 37.6 °F 28.9 °F 53% 30.51 in 10.0 mi ESE 17.3 mph 25.3 mph N/A   Partly Cloudy
4:53 PM 43.0 °F 35.4 °F 28.9 °F 58% 30.52 in 10.0 mi ESE 16.1 mph - N/A   Partly Cloudy
5:53 PM 42.1 °F 33.1 °F 28.0 °F 58% 30.53 in 10.0 mi ESE 20.7 mph 26.5 mph N/A   Clear
6:53 PM 41.0 °F 32.2 °F 28.0 °F 60% 30.54 in 10.0 mi ESE 18.4 mph - N/A   Clear
7:53 PM 39.9 °F 31.8 °F 28.0 °F 63% 30.55 in 10.0 mi ESE 15.0 mph - N/A   Clear
8:53 PM 39.9 °F 30.8 °F 28.0 °F 63% 30.56 in 10.0 mi ESE 18.4 mph - N/A   Clear
9:53 PM 39.0 °F 30.3 °F 28.0 °F 65% 30.56 in 10.0 mi ESE 16.1 mph - N/A   Clear
10:53 PM 37.9 °F 29.2 °F 28.0 °F 68% 30.57 in 10.0 mi ESE 15.0 mph - N/A   Clear
11:53 PM 37.9 °F 29.2 °F 27.0 °F 65% 30.57 in 10.0 mi ESE 15.0 mph - N/A   Clear