The long-range forecast for Portland reveals lower temperatures than usual for this time of the year, dipping to 13°. In the coming days, the forecasted temperatures are expected to be on average -2.5 °F lower than the average of the last few years.
Select a month and click on a day for more information
Thursday
Oct 1
18° / 10°
Friday
Oct 2
17° / 9°
Saturday
Oct 3
17° / 9°
Sunday
Oct 4
16° / 10°
Monday
Oct 5
17° / 10°
Tuesday
Oct 6
17° / 9°
Wednesday
Oct 7
18° / 12°
Thursday
Oct 8
16° / 9°
Friday
Oct 9
14° / 7°
Saturday
Oct 10
16° / 7°
Sunday
Oct 11
16° / 8°
Monday
Oct 12
16° / 8°
Tuesday
Oct 13
15° / 8°
Wednesday
Oct 14
16° / 9°
Thursday
Oct 15
14° / 8°
Friday
Oct 16
15° / 8°
Saturday
Oct 17
13° / 7°
Sunday
Oct 18
13° / 7°
Monday
Oct 19
15° / 6°
Tuesday
Oct 20
14° / 7°
Wednesday
Oct 21
17° / 9°
Thursday
Oct 22
17° / 9°
Friday
Oct 23
14° / 9°
Saturday
Oct 24
14° / 8°
Sunday
Oct 25
13° / 8°
Monday
Oct 26
12° / 8°
Tuesday
Oct 27
13° / 7°
Wednesday
Oct 28
13° / 6°
Thursday
Oct 29
10° / 5°
Friday
Oct 30
11° / 6°
Saturday
Oct 31
14° / 8°
Portland 30 days weather forecast
Check out our estimated 30 days weather forecast for Portland, this data is based on the average weather in Portland in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Portland next to the desired date.
Weather in Portland for the next 30 days
Click on a day for an hourly weather forecast
Portland long range weather forecast - FAQ
Do you provide 30 days weather forecast for Portland?
You can see the next 30 weather forecast for Portland at the top of the page, the next 14 days (from today) are more accurate, while the other is based on average of previous years.
Can I see the weather forecast for a particular date in Portland?
Sure, you can select the date from the calendar above to view the forecast in Portland on that date.
How accurate is the long-range weather forecast for Portland?
Our long-range weather forecast for Portland is provided by using statistics from previous years. Although we cannot predict the weather months in advance, we can see an average.
Can I see a long-range weather forecast for different countries?
Yes, we provide a 14 day weather forecast and a long-range weather forecast for different countries and cities. You can search for a location in the search box at the top of the page.
More about the weather in Portland