easeweather.com
Units
°C
°F
Multnomah County
Forecast Today Tomorrow
more
Oregon United States

Weather in Multnomah County for May 2025

Your guide to Multnomah County weather in May - trends and predictions
  • In general, the average temperature in Multnomah County at the beginning of May is 13.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.1 °F by the end of May.

  • Multnomah County sees moderate rainfall in May, averaging 6 rainy days.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
25
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/7°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Multnomah County in May average weather

Move between months or click on a day
Select a date

You can click on date

Access Multnomah County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Got it

Temperatures trend during May in Multnomah County

See the weather trend as well as the moving average line

May weather day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
May 1 Patchy rain possible
Patchy rain possible
14° /5° 0.3 mm 3
May 2 Overcast
Overcast
17° /8° 1.9 mm 4
May 3 Overcast
Overcast
16° /7° 8.9 mm 4
May 4 Moderate or heavy rain shower
Moderate or heavy rain shower
11° /6° 23.7 mm 3
May 5 Patchy rain possible
Patchy rain possible
11° /6° 5.4 mm 3
May 6 Patchy rain possible
Patchy rain possible
13° /6° 6.4 mm 3
May 7 Moderate or heavy rain shower
Moderate or heavy rain shower
13° /5° 2.3 mm 3
May 8 Moderate or heavy rain shower
Moderate or heavy rain shower
15° /4° 6.6 mm 4
May 9 Patchy rain possible
Patchy rain possible
21° /6° 0.2 mm 5
May 10 Sunny
Sunny
25° /9° 0 mm 7
May 11 Partly cloudy
Partly cloudy
25° /10° 0 mm 7
May 12 Sunny
Sunny
27° /9° 0 mm 7
May 13 Sunny
Sunny
25° /10° 0 mm 6
May 14 Sunny
Sunny
27° /9° 0 mm 7
May 15 Moderate rain at times
Moderate rain at times
27° /11° 0.2 mm 6
May 16 Overcast
Overcast
23° /11° 0 mm 5
May 17 Sunny
Sunny
24° /11° 0.1 mm 6
May 18 Partly cloudy
Partly cloudy
22° /10° 0 mm 6
May 19 Sunny
Sunny
21° /9° 0.3 mm 5
May 20 Sunny
Sunny
23° /8° 0 mm 6
May 21 Cloudy
Cloudy
15° /9° 4.3 mm 4
May 22 Patchy rain possible
Patchy rain possible
15° /8° 2.8 mm 4
May 23 Patchy rain possible
Patchy rain possible
18° /7° 0.1 mm 4
May 24 Partly cloudy
Partly cloudy
20° /7° 0.2 mm 5
May 25 Sunny
Sunny
20° /8° 1.5 mm 5
May 26 Sunny
Sunny
24° /10° 0 mm 6
May 27 Patchy rain possible
Patchy rain possible
23° /9° 0.2 mm 6
May 28 Partly cloudy
Partly cloudy
20° /8° 1.6 mm 5
May 29 Partly cloudy
Partly cloudy
21° /7° 0.8 mm 6
May 30 Partly cloudy
Partly cloudy
20° /6° 0 mm 6
May 31 Overcast
Overcast
20° /6° 0 mm 5
Next
Important Notice
Our weather forecast for Multnomah County in May 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 May - FAQ

What are the expected maximum and minimum temperatures in Multnomah County during May?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Multnomah County during May?
Significant rainfall exceeding 127.7 mm is expected in Multnomah County during May, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Multnomah County during May?
The average wind speed in Multnomah County during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Multnomah County

Explore the daily rainfall trends and prepare for Multnomah Countys May weather 💧

UV exposure in Multnomah County during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Top locations in Multnomah County
Select a location for an accurate weather forecast
More Locations

Quick links

Location coordinates 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.

Found a mistake?
We appreciate your attention to details. Tell us here.