Multnomah County (Portland)
October
Weather in Multnomah County, Oregon for October 2027
Your guide to Multnomah County weather in October - trends and predictions
In general, the average temperature in Multnomah County 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.
Multnomah County 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 Multnomah County? check out the best time to travel to Multnomah County page.
✨ Is October a good time to visit Multnomah County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
22
Dry days
9
Rainy days
0
Snow days
17°/9°
Temperatures
10 km/h
Avg max wind
68 %
Avg humidity
Multnomah County Weather October
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Temperatures trend during October in Multnomah County
See the weather trend as well as the moving average line
October weather in Multnomah County day by day
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| 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 | 12° /7° | 15.6 mm | 2 | |
| Oct. 26 | Moderate rain | 11° /8° | 15 mm | 2 | |
| Oct. 27 | Moderate rain | 12° /7° | 13.3 mm | 2 | |
| Oct. 28 | Light rain | 13° /7° | 6.7 mm | 2.4 | |
| Oct. 29 | Light rain | 12° /6° | 4.5 mm | 2.3 | |
| Oct. 30 |  Moderate or heavy rain shower | 13° /6° | 9.5 mm | 2.3 | |
| Oct. 31 | Light rain | 13° /6° | 3.6 mm | 2 | |
| Next | |||||
Important Notice
Our weather forecast for Multnomah County 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 Multnomah County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Multnomah County in October - FAQ
What are the expected maximum and minimum temperatures in Multnomah County during October?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Multnomah County during October?
Significant rainfall exceeding 130 mm is expected in Multnomah County during October, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Multnomah County during October?
The average wind speed in Multnomah County during October is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Multnomah County
Explore the daily rainfall trends and prepare for Multnomah Countys October weather 💧
Typically, Multnomah County has 9 rainy days in October with a total of 130 mm of rainfall.
UV exposure in Multnomah County during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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