Portland
October
Weather in Portland for October 2025
Your guide to Portland weather in October - trends and predictions
In general, the average temperature in Portland at the beginning of October is 22.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.7 °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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Temperatures
Rain 🌧️
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13
Dry days
18
Rainy days
0
Snow days
18°/9°
Temperatures
9 km/h
Avg max wind
69 %
Avg humidity
Portland in October average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  15° | 3  21° | 4  16° | 5 24° | ||
| 6  28° | 7 27° | 8 22° | 9 16° | 10  17° | 11  20° | 12 23° |
| 13  22° | 14 17° | 15 18° | 16 16° | 17 17° | 18 19° | 19 22° |
| 20 20° | 21 16° | 22 16° | 23 14° | 24 13° | 25  13° | 26 12° |
| 27 13° | 28 13° | 29 13° | 30 13° | 31 12° |
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Temperatures trend during October in Portland
See the weather trend as well as the moving average line
October weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 | Cloudy | 24° /9° | 0 mm | 6 | |
| Oct. 2 | Light rain | 15° /8° | 2.5 mm | 4 | |
| Oct. 3 | Patchy rain possible | 21° /9° | 0 mm | 5 | |
| Oct. 4 | Mist | 16° /10° | 17 mm | 4 | |
| Oct. 5 | Mist | 24° /9° | 0 mm | 6 | |
| Oct. 6 | Sunny | 28° /12° | 0 mm | 8 | |
| Oct. 7 | Sunny | 27° /13° | 0 mm | 7 | |
| Oct. 8 | Cloudy | 22° /13° | 0 mm | 5 | |
| Oct. 9 | Light rain shower | 16° /11° | 8.4 mm | 4 | |
| Oct. 10 | Moderate rain | 17° /9° | 4.3 mm | 4 | |
| Oct. 11 | Moderate or heavy rain with thunder | 20° /11° | 4.8 mm | 5 | |
| Oct. 12 | Mist | 23° /12° | 0.1 mm | 5 | |
| Oct. 13 | Overcast | 22° /11° | 0.3 mm | 6 | |
| Oct. 14 | Light drizzle | 17° /11° | 2.2 mm | 4 | |
| Oct. 15 | Overcast | 18° /12° | 8.8 mm | 5 | |
| Oct. 16 | Moderate or heavy rain with thunder | 16° /11° | 11.9 mm | 4 | |
| Oct. 17 | Fog | 17° /9° | 1 mm | 4 | |
| Oct. 18 | Mist | 19° /8° | 0 mm | 5 | |
| Oct. 19 | Mist | 22° /11° | 0 mm | 5 | |
| Oct. 20 | Fog | 20° /11° | 8.2 mm | 5 | |
| Oct. 21 | Fog | 16° /10° | 12.9 mm | 4 | |
| Oct. 22 | Patchy rain possible | 16° /11° | 0.2 mm | 4 | |
| Oct. 23 | Patchy rain possible | 14° /8° | 0 mm | 4 | |
| Oct. 24 | Light rain | 13° /4° | 3.8 mm | 3 | |
| Oct. 25 | Patchy light rain with thunder | 13° /5° | 5.9 mm | 3 | |
| Oct. 26 | Patchy rain possible | 12° /8° | 4 mm | 3 | |
| Oct. 27 | Fog | 13° /5° | 20.3 mm | 3 | |
| Oct. 28 | Sunny | 13° /5° | 4.1 mm | 4 | |
| Oct. 29 | Sunny | 13° /5° | 0 mm | 4 | |
| Oct. 30 | Sunny | 13° /5° | 14.3 mm | 4 | |
| Oct. 31 | Overcast | 12° /5° | 4.9 mm | 3 | |
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Important Notice
Our weather forecast for Portland in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Portland forecast closer to your planned date for the most up-to-date weather information.
Portland in October - FAQ
What are the expected maximum and minimum temperatures in Portland during October?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Portland during October?
Significant rainfall exceeding 140 mm is expected in Portland during October, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Portland during October?
The average wind speed in Portland during October is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Portland
Explore the daily rainfall trends and prepare for Portlands October weather 💧
UV exposure in Portland during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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