Multnomah County Weather Forecast
Multnomah County weather: 84°F, clear sky. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Multnomah County
Derived from the current forecast window - not an official warning.
14 dry days, 1 day above 90°F and humidity at 44%. Hot, dry and windy together is what drives fire spread.
Light haze overhead right now. Aerosol readings cannot separate wildfire smoke from dust, so treat this as a haze signal, not a fire confirmation.
Air quality and pollen in Multnomah County
Air quality: Open-Meteo (CAMS). US AQI scale.
Health and safety today
| Skin and UV | No protection needed for most skin types. |
|---|---|
| Pets | Pavement can be 20°C hotter than the air. Walk dogs early or late, never leave animals in cars, and carry water. |
| Older adults | Heat builds up slowly indoors. Check on anyone over 65 living alone and keep rooms ventilated. |
| Children | Small bodies overheat faster than adults. Shade, hats and frequent drinks; skip midday sport. |
See the Multnomah County forecast by time range
Multnomah County weather - more answers
Explore Multnomah County
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
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 84°F (29°C) with clear sky. Humidity is 44% and wind is 4 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 7:26 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 21, 2026 at 7:26 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
