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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.

  • The climate of Portland in October is notably wet, with an average of 11 rainy days.

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Average dry days
20
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/9°
Temperatures
Average wind speed
9 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Portland in October average weather

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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
Cloudy
24° /9° 0 mm 6
Oct. 2 Light rain
Light rain
15° /8° 2.5 mm 4
Oct. 3 Patchy rain possible
Patchy rain possible
21° /9° 0 mm 5
Oct. 4 Mist
Mist
16° /10° 17 mm 4
Oct. 5 Mist
Mist
24° /9° 0 mm 6
Oct. 6 Sunny
Sunny
28° /12° 0 mm 8
Oct. 7 Sunny
Sunny
27° /13° 0 mm 7
Oct. 8 Cloudy
Cloudy
22° /13° 0 mm 5
Oct. 9 Light rain shower
Light rain shower
16° /11° 8.4 mm 4
Oct. 10 Moderate rain
Moderate rain
17° /9° 4.3 mm 4
Oct. 11 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
20° /11° 4.8 mm 5
Oct. 12 Mist
Mist
23° /12° 0.1 mm 5
Oct. 13 Overcast
Overcast
22° /11° 0.3 mm 6
Oct. 14 Light drizzle
Light drizzle
17° /11° 2.2 mm 4
Oct. 15 Overcast
Overcast
18° /12° 8.8 mm 5
Oct. 16 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
16° /11° 11.9 mm 4
Oct. 17 Fog
Fog
17° /9° 1 mm 4
Oct. 18 Mist
Mist
19° /8° 0 mm 5
Oct. 19 Mist
Mist
22° /11° 0 mm 5
Oct. 20 Fog
Fog
20° /11° 8.2 mm 5
Oct. 21 Fog
Fog
16° /10° 12.9 mm 4
Oct. 22 Patchy rain possible
Patchy rain possible
16° /11° 0.2 mm 4
Oct. 23 Patchy rain possible
Patchy rain possible
14° /8° 0 mm 4
Oct. 24 Light rain
Light rain
13° /4° 3.8 mm 3
Oct. 25 Patchy light rain with thunder
Patchy light rain with thunder
13° /5° 5.9 mm 3
Oct. 26 Patchy rain possible
Patchy rain possible
12° /8° 4 mm 3
Oct. 27 Fog
Fog
13° /5° 20.3 mm 3
Oct. 28 Sunny
Sunny
13° /5° 4.1 mm 4
Oct. 29 Sunny
Sunny
13° /5° 0 mm 4
Oct. 30 Sunny
Sunny
13° /5° 14.3 mm 4
Oct. 31 Overcast
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?
Moderate rainfall is anticipated in Portland during October, with a total of 78.2 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
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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Location coordinates 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.

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