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> Usa > Portland, Oregon >December
Weather in December in Portland, Oregon
| < 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 | 01h 48' | |
| Average Daylight per day | 08h 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).
- The variation/ range of diurnal average temperatures in December is 6 °C (10.8 °F).
- Precipitation averages for December are high with 155.7mm (6.1 in) recorded across 19 days.
- The blue above Portland, Oregon is really dreary having on balance only 1h 48' of magnificent sunshine per day.
- The shortest day is 8h 41' long and the longest day is 8h 56' long with an average length of 8h 45'.
- There are approximately 6h 45' per day when the sun is occluded by cloud, haze, fog etc.
- It is sunny approximately 21.1% of daylight hours and cloudy 78.9% of daylight hours.
Weather Trend Graph for December in Portland, Oregon, Usa
