Weather in Portland, Oregon for October 2025
Until now, October 2025 in Portland is cooler than usual, with temperatures averaging 15.6 °F, this is -2.1 °F below the typical seasonal average.
Expect cooler weather in the next days in Portland with the forecast suggesting a temperature of 13.8 °F, lower than the historical average.
In general, the average temperature in Portland at the beginning of October is 21.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.1 °F by the end of October.
Portland in October brings notable rainfall, with an average of 18 rainy days and a total precipitation of 140 mm.
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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 |  Cloudy | 22° /10° | 1.7 mm | 5 | |
| Oct. 2 |  Light rain | 17° /9° | 1.7 mm | 4 | |
| Oct. 3 |  Partly cloudy | 20° /9° | 0 mm | 5 | |
| Oct. 4 |  Mist | 16° /11° | 11.3 mm | 4 | |
| Oct. 5 | Mist | 24° /9° | 0 mm | 5 | |
| Oct. 6 |  Sunny | 27° /11° | 0 mm | 7 | |
| Oct. 7 | Sunny | 27° /12° | 0 mm | 7 | |
| Oct. 8 |  Overcast | 19° /12° | 0 mm | 4 | |
| Oct. 9 |  Light rain shower | 15° /10° | 5.6 mm | 4 | |
| Oct. 10 |  Moderate rain | 17° /9° | 3.5 mm | 4 | |
| Oct. 11 |  Moderate or heavy rain with thunder | 17° /10° | 3.2 mm | 4 | |
| Oct. 12 | Mist | 19° /11° | 10.6 mm | 4 | |
| Oct. 13 | Overcast | 18° /9° | 1.6 mm | 4 | |
| Oct. 14 | Light drizzle | 18° /9° | 1.5 mm | 4 | |
| Oct. 15 | Overcast | 19° /10° | 5.9 mm | 5 | |
| Oct. 16 | Moderate or heavy rain with thunder | 16° /9° | 7.9 mm | 4 | |
| Oct. 17 | Fog | 16° /9° | 0.6 mm | 4 | |
| Oct. 18 | Mist | 17° /8° | 0 mm | 4 | |
| Oct. 19 | Mist | 19° /11° | 3.5 mm | 4 | |
| Oct. 20 | Fog | 18° /10° | 5.5 mm | 4 | |
| Oct. 21 | Fog | 17° /8° | 8.6 mm | 4 | |
| Oct. 22 | Overcast | 17° /10° | 0.1 mm | 4 | |
| Oct. 23 | Overcast | 15° /9° | 0 mm | 4 | |
| Oct. 24 | Light rain | 13° /6° | 13.7 mm | 3 | |
| Oct. 25 |  Patchy light rain with thunder | 13° /6° | 13.3 mm | 3 | |
| Oct. 26 | Patchy rain possible | 11° /7° | 13.9 mm | 3 | |
| Oct. 27 | Fog | 12° /5° | 13.5 mm | 3 | |
| Oct. 28 | Sunny | 13° /6° | 2.7 mm | 3 | |
| Oct. 29 | Moderate rain | 15° /7° | 6.4 mm | 0.5 | |
| Oct. 30 | Overcast | 15° /6° | 0 mm | 0.3 | |
| Oct. 31 | Overcast | 13° /7° | 0 mm | 0.3 | |
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Portland in October - FAQ
October rainfall patterns in Portland
UV exposure in Portland during October
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