Multnomah County Weather Forecast
Multnomah County weather: 71°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for Multnomah County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Tue, Aug 25 | ☁️ Overcast | 84° / 63° | 0% | 8 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 81° / 57° | 1% | 9 mph | 7 |
| Thu, Aug 27 | ☁️ Overcast | 82° / 62° | 2% | 10 mph | 6 |
| Fri, Aug 28 | ☁️ Overcast | 82° / 58° | 1% | 10 mph | 6 |
| Sat, Aug 29 | ☁️ Overcast | 80° / 56° | 13% | 9 mph | 6 |
| Sun, Aug 30 | ☁️ Overcast | 83° / 54° | 3% | 5 mph | 6 |
| Mon, Aug 31 | ☁️ Overcast | 75° / 57° | 13% | 11 mph | 6 |
| Tue, Sep 1 | 🌦️ Light drizzle | 64° / 57° | 20% · 0,1 in | 7 mph | 3 |
| Wed, Sep 2 | ☁️ Overcast | 79° / 55° | 26% | 8 mph | 6 |
| Thu, Sep 3 | ☀️ Clear sky | 82° / 55° | 19% | 9 mph | 6 |
| Fri, Sep 4 | ☀️ Clear sky | 94° / 56° | 12% | 10 mph | 6 |
| Sat, Sep 5 | ☀️ Clear sky | 100° / 64° | 19% | 7 mph | 6 |
| Sun, Sep 6 | ☀️ Clear sky | 101° / 67° | 12% | 4 mph | 6 |
| Mon, Sep 7 | ☀️ Clear sky | 102° / 70° | 13% | 4 mph | 6 |
The two-week trend
Warming. The second half of the window averages 41°F warmer than the days immediately ahead.
The window averages 86°F against a August normal of 84°F - right on average.
The next 7 days look unusually dry - roughly 0% of a normal August week (0,0 in against 0,1 in).
What this means for Multnomah County
Today is about average for August. The forecast high of 84°F is in line with the 84°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 64°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid January, November and December - historically the least comfortable months here.
See the Multnomah County forecast by time range
Multnomah County weather - more answers
Explore Multnomah County
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Frequently asked questions
Where is Multnomah County?
Multnomah County is a county in Oregon. Its coordinates are 45.5152, -122.6784. It lies in North America.
What is the weather like in Multnomah County right now?
It is currently 71°F (22°C) with clear. Humidity is 54% and wind is 2 mph.
When is the best time to visit Multnomah County?
June, July and August offer the most comfortable conditions in Multnomah County, which has a temperate climate. January, November and December are usually the hardest months for outdoor plans.
What time zone is Multnomah County in?
Multnomah County observes America/Los_Angeles (UTC-07:00). The local time is 1:22 AM.
How many people live in Multnomah County?
Multnomah County has a population of approximately 800.000.
What is the nearest airport to Multnomah County?
The closest airports are Portland International Airport (PDX), 7 mi away, Seattle-Tacoma International Airport (SEA), 135 mi away and Vancouver International Airport (YVR), 255 mi away.
What are the top things to do in Multnomah County?
Popular options include Columbia River, Silver Falls State Park, Mount Hood, Cannon Beach, Mount Rainier and Mount Rainier National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 25, 2026 at 1:22 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
