Multnomah County (Portland)
August
Weather in Multnomah County for August 2025
Your guide to Multnomah County weather in August - trends and predictions
In general, the average temperature in Multnomah County at the beginning of August is 31.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 28 °F by the end of August.
With an average of 4 rainy days, Multnomah County experiences minimal rainfall in August.
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Temperatures
Rain 🌧️
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27
Dry days
4
Rainy days
0
Snow days
29°/15°
Temperatures
13 km/h
Avg max wind
55 %
Avg humidity
Multnomah County in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  34° | 2  34° | 3  30° | ||||
| 4  32° | 5  31° | 6  29° | 7 30° | 8 30° | 9 29° | 10 30° |
| 11 29° | 12 28° | 13 32° | 14 34° | 15 33° | 16 32° | 17 32° |
| 18 26° | 19 28° | 20 29° | 21 25° | 22 23° | 23 21° | 24 24° |
| 25 29° | 26 32° | 27 27° | 28 27° | 29 27° | 30 28° | 31 26° |
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Temperatures trend during August in Multnomah County
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Overcast | 34° /14° | 0 mm | 8 | |
| Aug. 2 | Sunny | 34° /17° | 0 mm | 8 | |
| Aug. 3 | Partly cloudy | 30° /16° | 0 mm | 8 | |
| Aug. 4 | Cloudy | 32° /15° | 0 mm | 8 | |
| Aug. 5 | Patchy rain possible | 31° /16° | 0.1 mm | 8 | |
| Aug. 6 | Moderate rain at times | 29° /16° | 0.2 mm | 7 | |
| Aug. 7 | Overcast | 30° /15° | 0 mm | 7 | |
| Aug. 8 | Overcast | 30° /15° | 0 mm | 7 | |
| Aug. 9 | Patchy rain possible | 29° /17° | 0.2 mm | 7 | |
| Aug. 10 | Overcast | 30° /15° | 0 mm | 7 | |
| Aug. 11 | Partly cloudy | 29° /14° | 0 mm | 7 | |
| Aug. 12 | Overcast | 28° /14° | 0 mm | 7 | |
| Aug. 13 | Sunny | 32° /14° | 0 mm | 8 | |
| Aug. 14 | Sunny | 34° /16° | 0 mm | 9 | |
| Aug. 15 | Sunny | 33° /17° | 0 mm | 8 | |
| Aug. 16 | Sunny | 32° /17° | 0 mm | 8 | |
| Aug. 17 | Overcast | 32° /16° | 1.7 mm | 7 | |
| Aug. 18 | Overcast | 26° /14° | 0.1 mm | 6 | |
| Aug. 19 | Sunny | 28° /11° | 0 mm | 8 | |
| Aug. 20 | Partly cloudy | 29° /13° | 0.2 mm | 7 | |
| Aug. 21 | Overcast | 25° /13° | 0 mm | 6 | |
| Aug. 22 | Overcast | 23° /13° | 2.5 mm | 5 | |
| Aug. 23 | Overcast | 21° /12° | 5.7 mm | 5 | |
| Aug. 24 | Sunny | 24° /11° | 0.8 mm | 6 | |
| Aug. 25 | Patchy rain possible | 29° /14° | 0.8 mm | 7 | |
| Aug. 26 | Sunny | 32° /15° | 0 mm | 8 | |
| Aug. 27 | Sunny | 27° /15° | 0.1 mm | 7 | |
| Aug. 28 | Overcast | 27° /13° | 0 mm | 6 | |
| Aug. 29 | Overcast | 27° /13° | 0 mm | 7 | |
| Aug. 30 | Overcast | 28° /15° | 0 mm | 7 | |
| Aug. 31 | Light rain shower | 26° /15° | 1.6 mm | 6 | |
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Important Notice
Our weather forecast for Multnomah County in August 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.
Multnomah County in August - FAQ
What are the expected maximum and minimum temperatures in Multnomah County during August?
During August, expect a variety of temperatures with highs around 29° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Multnomah County during August?
Expect minimal rainfall in Multnomah County during August, with a total of 13.9 mm over approximately 4 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Multnomah County during August?
The average wind speed in Multnomah County during August is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Multnomah County
Explore the daily rainfall trends and prepare for Multnomah Countys August weather 💧
UV exposure in Multnomah County during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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Where is Multnomah County?Get accurate weather forecasts for Multnomah County, located at latitude 45.523 and longitude -122.676. Stay updated with localized weather information tailored for Multnomah County.
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