Weather in Portland, Oregon for October 2026
So far, October 2026 in Portland is slightly warmer than the historical average by 2 °C.
Expect cooler weather in the next days in Portland with the forecast suggesting a temperature of 11.3 °C, lower than the historical average.
In general, the average temperature in Portland at the beginning of October is 22.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.3 °C by the end of October.
Portland experiences moderate rainfall in October, with an average of 9 rainy days and a total precipitation of 130 mm.
Is October a good time to visit Portland? check out the best time to travel to Portland page.
✨ Is October a good time to visit Portland? – Ask the AI Weatherman
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Portland Weather October
Temperatures trend during October in Portland
October weather in Portland day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Patchy rain possible | 22° /10° | 1.2 mm | 4 | |
| Oct. 2 |  Light rain | 19° /10° | 1.3 mm | 4 | |
| Oct. 3 |  Partly cloudy | 22° /10° | 0 mm | 4.2 | |
| Oct. 4 | Light rain | 19° /12° | 8.5 mm | 4 | |
| Oct. 5 |  Mist | 24° /10° | 0 mm | 4 | |
| Oct. 6 |  Sunny | 26° /12° | 0 mm | 3.9 | |
| Oct. 7 | Sunny | 26° /12° | 0 mm | 3.8 | |
| Oct. 8 |  Cloudy | 20° /12° | 0 mm | 3.8 | |
| Oct. 9 | Light rain | 15° /10° | 4.5 mm | 3 | |
| Oct. 10 | Light rain | 17° /9° | 2.7 mm | 3 | |
| Oct. 11 |  Moderate or heavy rain with thunder | 17° /10° | 2.4 mm | 3.5 | |
| Oct. 12 | Light rain | 18° /10° | 7.9 mm | 3.5 | |
| Oct. 13 | Patchy rain possible | 17° /9° | 1.2 mm | 3.4 | |
| Oct. 14 | Light drizzle | 19° /10° | 1.1 mm | 3.3 | |
| Oct. 15 | Light rain | 20° /10° | 4.4 mm | 3.2 | |
| Oct. 16 | Moderate or heavy rain with thunder | 18° /10° | 5.9 mm | 3 | |
| Oct. 17 | Fog | 16° /10° | 0.9 mm | 3 | |
| Oct. 18 | Mist | 17° /8° | 0 mm | 3 | |
| Oct. 19 | Light rain | 19° /11° | 2.6 mm | 3 | |
| Oct. 20 | Light rain | 19° /10° | 4.1 mm | 2.9 | |
| Oct. 21 | Light rain | 18° /9° | 6.4 mm | 2.8 | |
| Oct. 22 |  Overcast | 17° /10° | 0.1 mm | 2.8 | |
| Oct. 23 | Overcast | 15° /9° | 0 mm | 2.7 | |
| Oct. 24 |  Moderate rain | 13° /6° | 10.3 mm | 2 | |
| Oct. 25 | Moderate rain | 11° /8° | 22.1 mm | 0.4 | |
| Oct. 26 | Light rain | 12° /9° | 4.3 mm | 0.3 | |
| Oct. 27 | Light rain | 13° /8° | 2.9 mm | 1.4 | |
| Oct. 28 | Moderate rain | 11° /7° | 13.6 mm | 1.6 | |
| Oct. 29 | Light rain | 10° /6° | 8.7 mm | 2 | |
| Oct. 30 | Patchy rain possible | 10° /4° | 2.1 mm | 2 | |
| Oct. 31 | Light rain | 12° /6° | 3.8 mm | 4 | |
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Portland in October - FAQ
What are the expected maximum and minimum temperatures in Portland during October?
How much rainfall should be expected in Portland during October?
What are the typical wind conditions in Portland during October?
October rainfall patterns in Portland
UV exposure in Portland during October
Where is Portland?Get accurate weather forecasts for Portland, located at latitude 45.523 and longitude -122.676. Stay updated with localized weather information tailored for Portland.