Portland weather in January 2026

Expect daytime maximum temperatures of 45°F in Portland, Oregon in January based on long-term weather averages. There are 3 hours of sunshine per day on average with 17 days with some rainfall and typically 6.4 inches of rainfall in the month.

  • 45°F maximum daytime temperature in January in Portland45
    45°F max day temperature
  • 3 hours of sunshine per day
  • 17 days with some rainfall in January in Portland17
    17 days with some rainfall
  • 32°F minimum night-time temperature in January in Portland32
    32°F min night temperature
  • 9 hours of daylight per day in January in Portland9
    9 hours of daylight per day
  • No heat & humidity in January in Portland0
    No heat & humidity
  • 6.4 inches monthly rainfall in January in Portland6.4
    6.4 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Portland1
    1 (Low) UV index

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The January weather guide for Oregon (Portland) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How cold is it in Portland in January?

Daytime temperatures usually reach 45°F in Portland in January, falling to 32°F at night.

How sunny is it in Portland in January?

There are normally 3 hours of bright sunshine each day in Portland in January - that's 30% of daylight hours.

Does it rain in Portland in January?

There are usually 17 days with some rain in Portland in January and the average monthly rainfall is 6.4 inches.

Portland January sunrise & sunset times

Browse the sunrise and sunset times for Portland in January 2026. Select a month to view Portland sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:51 16:38
Friday, 16th January 2026 07:46 16:55
Saturday, 31st January 2026 07:33 17:16

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