Weather in Portland in October
The weather in Portland in October is fickle, ranging from cold to pleasant. Temperatures are between 8.6 and 17.2 degrees and there are about 9 days of rain, so it is advised to prepare for both warm and chilly conditions.
Avg Temp
8.6° - 17.2°
Avg Rainy Days
9

Avg Dry Days
22

Avg Snow Days
0