Weather December 2024 Portland Airport. Expect 7°c daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in portland in december. Read along as i dive into portland’s historical weather data and climate influencers, like la niña, to give you insight into what conditions we can expect this winter.

Read along as i dive into portland’s historical weather data and climate influencers, like la niña, to give you insight into what conditions we can expect this winter. Manhattan, ny 61 °f cloudy.