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Weather in December in Portland, Oregon

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< December >
 
Normal Max/ High Temperature 8°C (46°F)
 
Average Temperature 5°C (40°F)
 
Min/ Low Temperature 2°C (35°F)
 
Normal Precipitation 156mm (6.1in)
Number of Wet Days (probability of rain on a day) 19 (61%)
Average Sunlight per day 01:48
Average Daylight per day 08:45
Sunny (Cloudy) Daylight Hours 21% (79%)
Sun altitude at solar noon on the 21st day.
21°


  • The average temperature in Portland, Oregon in December is cool at 4.6 °C (40.28 °F).
  • Afternoons can be a little cool with average high temperatures reaching 7.6 °C (45.7 °F).
  • Overnight temperatures are generally very cool with an average low of 1.6 °C (34.9 °F).
  • In December the range/ variation of daily average temperatures is 6 °C (10.8 °F).
  • The weather in December is a little damp with sleet, rain or snow from time to time. Some 155.7mm (6.1in) of water is unloaded during on average 19 days.
  • In December the skies in Portland, Oregon are really dreary having on average only 1:48 of magnificent sunlight daily.
  • The shortest day is 8:41 long and the longest day is 8:56 long with an average length of 8:45.
  • There are approximately 6:45 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 21.1% of daylight hours and cloudy 78.9% of daylight hours.

Check the distance to and compare the Portland, Oregon December averages with somewhere beginning with:

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Weather Trend Graph for December in Portland, Oregon, Usa

Graph of weather in Portland, Oregon in December

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