Portland Weather 2025r. Explore comprehensive december 2025 weather forecasts for portland, including daily high and low temperatures, precipitation risks, and monthly temperature trends. Myforecast is a comprehensive resource for online weather forecasts and reports for over 72,000 locations worldcwide.
Insights into temperature, precipitation, and weather trends. The average temperature during this month is around 55.6°f (13.1°c), providing a.