Troutdale (OR) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Troutdale.
Climate overview of Troutdale
The climate in Troutdale, Oregon, United States of America, is marked by large temperature swings across the seasons, ranging from 28°C (82°F) in August to 7°C (45°F) in December.
The city receives considerable rain/snowfall, with around 1336 mm (53 in) annually. December is the wettest month. It has distinct dry (July to August) and wet (November to January) seasons, with warm summers and cold winters. July is the sunniest month, averaging 11.1 hours of sunshine per day.
Troutdale Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Troutdale - and find the best time to visit.
Monthly Temperature in Troutdale
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
Rainfall in Troutdale
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
Sunshine Hours in Troutdale
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
Humidity in Troutdale by Month
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
Wind Speed in Troutdale
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)
Best Time to Visit Troutdale
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July and August
- Wettest months: January, February, March, October, November and December, when rainfall is highest.
- Seasonal pattern: Distinct dry (July to August) and wet (November to January) seasons, with warm summers and cold winters
Frequently asked questions about the climate in Troutdale
What is the best time to visit Troutdale?
May, June, July, August and September typically offer the most optimal weather in Troutdale. In contrast, January, February, March, November and December tend to have less optimal conditions. Troutdale has distinct dry (July to August) and wet (November to January) seasons, with warm summers and cold winters.
What temperatures can I expect in Troutdale?
Daytime highs range from 7°C (45°F) in December to 28°C (82°F) in August. Nighttime lows range from 2°C (36°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Troutdale get?
Annual rainfall is around 1336 mm (53 in). December is the wettest month with 215 mm (8.5 in), while August is the driest with 14 mm (0.6 in).
How sunny is Troutdale?
Troutdale receives around 2,341 hours of sunshine per year. July is the sunniest month with 332 hours, while December is the cloudiest with just 64 hours. Overall, Troutdale enjoys abundant sunshine.
Troutdale 3-Day Forecast
Troutdale on the map
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