Portland Weather in October

The climate in Portland during October can be summarized as cool and damp.

October is in the fall / autumn in Portland and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 4°C (39°F) is normal.

On average October is the 4th wettest month of the year in Portland with around 100mm 3.9 inches of rain making it a damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.8 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Portland in October 2024.