Weather in January in Portland, Oregon

• The average temperature in Portland, Oregon in January is cool at 4.2 °C (39.56 °F).
• Afternoons can be a little cool with average high temperatures reaching 7.4 °C (45.3 °F).
• Overnight temperatures are generally very cool with an average low of 0.9 °C (33.6 °F).
• In January there is a variation/ range of daily average temperatures of 6.5 °C (11.7 °F).
• Precipitation averages for January are high with 135.9mm (5.4 in) recorded across 18 days.
• The skies in Portland, Oregon are really dreary with on average only 1h 48' of bright sunlight per day.
• The shortest day is 8h 45' long and the longest day is 9h 37' long with an average length of 9h 07'.
• There are approximately 7h 07' per day when the sun is occluded by cloud, haze, fog etc.
• It is sunny approximately 20.2% of daylight hours and cloudy 79.8% of daylight hours.

Weather Trend Graph for January in Portland, Oregon, Usa