Troutdale (OR) Weather & Climate: Best Time to Visit

In Troutdale, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 28°C (82°F) in August to a chilly 7°C (45°F) in the coolest month, December.

Nights vary from 13°C (55°F) in August to around 2°C (36°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Troutdale experiences significant rain/snowfall throughout the year, averaging 1336 mm (53 in) of precipitation annually. The climate in Troutdale shows significant variation throughout the year. Expect heavy rainfall in December, the wettest month, with an average of 215 mm (8.5 in) of precipitation over 23 rainy days.

In contrast, the driest month August offers drier and sunnier days, with around 14 mm (0.6 in) of rainfall over 5 rainy days. For more details, please visit our Troutdale Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

For those who appreciate different seasons, Troutdale serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 11.1 hours of sunshine daily, and embrace the darker days in December, offering only 2.1 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Troutdale.

The city experiences its highest humidity in December, reaching 83%. In July, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The mean wind speed varies between 2 m/s (4 knots) and 4 m/s (8 knots) throughout the year. It is lowest in September and October and highest during January. What does this mean?

The mean monthly wind speed over the year (meters per second)