The highest day temperature in October 2025 was 76°F. The lowest night temperature was 40°F. The average values for day and night temperatures during October were 60.5°F и 48.8°F respectivly.

You can expect various weather conditions during October. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in October for Portland is 2.6 in.

The average wind speed in October is 4.7 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Portland in October is 6.0 hours.