Cascade Locks (OR) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Cascade Locks.
Climate overview of Cascade Locks
Cascade Locks, Oregon, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 26°C (79°F) in August, while winters cool to 5°C (41°F) in December.
Rain/snowfall is high, totalling around 2235 mm (88 in) per year. December is the wettest month and July the driest. The city also experiences distinct dry (July to August) and wet (October to April) seasons. The most sunshine falls in July, with an average of 11.1 hours of daily sunshine.
Cascade Locks Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cascade Locks — and find the best time to visit.
Monthly Temperature in Cascade Locks
Depending on the time of the year, temperatures range from comfortable to chilly in Cascade Locks. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in August, the warmest time of the year, to a chilly 5°C (41°F) during cooler months like December.
At night, you can expect temperatures ranging from 13°C (55°F) in August to around -1°C (30°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Cascade Locks
Cascade Locks has a relatively rain/snowy climate with high precipitation levels, averaging 2235 mm (88 in) of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives heavy snow/rainfall, averaging 388 mm (15 in) of precipitation, recorded across 24 snowy/rainy days. In contrast, the driest month July brings less rainfall, with 19 mm (0.7 in) over 4 rainy days. For more details, please visit our Cascade Locks 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 Cascade Locks
Seasonal changes in sunshine hours are quite dramatic in Cascade Locks. While July receives considerable daily sunshine with up to 11.1 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.1 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Cascade Locks by Month
The relative humidity is high throughout the year in Cascade Locks.
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
Best Time to Visit Cascade Locks
Rainfall during this time ranges from 19 mm (0.7 in) in July to 122 mm (4.8 in) in May. This means you can expect a mix of sunny days and occasional showers.
The rainy season falls during January, February, March, April, October, November and December, bringing heavy precipitation. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
Frequently asked questions about the climate in Cascade Locks
What is the best time to visit Cascade Locks?
June, July, August and September typically offer the most optimal weather in Cascade Locks. In contrast, January, February, March, October, November and December tend to have less optimal conditions. Cascade Locks has distinct dry (July to August) and wet (October to April) seasons.
What temperatures can I expect in Cascade Locks?
Daytime highs range from 5°C (41°F) in December to 26°C (79°F) in August. Nighttime lows range from -1°C (30°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Cascade Locks get?
Annual rainfall is around 2235 mm (88 in). December is the wettest month with 388 mm (15 in), while July is the driest with 19 mm (0.7 in). In the coldest months, precipitation may fall as snow/rain.
How sunny is Cascade Locks?
Cascade Locks 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, Cascade Locks enjoys abundant sunshine.
Cascade Locks 3-Day Forecast
Cascade Locks (OR) 3-Day Forecast
Cascade Locks on the map
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