Portland Weather in January

January in Portland sees daytime temperatures around 10°C (50°F) and lows of 6°C (43°F) at night. With around 99 mm (3.9 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Portland in January

You can expect rain on around 18 days based on historical patterns, with 99 mm (3.9 in) average for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Portland in January

January in Portland brings low temperatures, with highs of 10°C (50°F) and nights around 6°C (43°F). During January, you'll experience the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. At 6°C (43°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Portland in January

This month is characterized by fewer sunny days, with about 59 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. August typically offers the best weather for Portland.