Portland Weather in January
United States · 30-year monthly averages
⚠️ Challenging time to visit
January in Portland is chilly, with average daytime highs around 9°C (47°F) and nighttime lows near 2°C (36°F). Expect roughly 128mm of precipitation spread over about 15 rainy days, and this is one of the wetter months.
Avg high
9°C
47°F
Avg low
2°C
36°F
Rainfall
128mm
rainy
Rainy days
15
days with ≥1mm
🎒 What to pack
- jacket or coat
- long-sleeve layers
- compact umbrella or rain jacket
January vs the rest of the year
FAQ
- How hot is Portland in January?
- January in Portland is chilly, with average daytime highs around 9°C (47°F) and nighttime lows near 2°C (36°F). Expect roughly 128mm of precipitation spread over about 15 rainy days, and this is one of the wetter months.
- Does it rain a lot in Portland in January?
- Portland sees around 128mm of precipitation in January on average — rainy by global standards.
- Is January a good time to visit Portland?
- January is a challenging month to visit Portland weather-wise — plan around the conditions.