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Cascade Locks, OR Weather


Cascade Locks, OR climate is mild during summer when temperatures tend to be in the 60's and very cold during winter when temperatures tend to be in the 30's.

The warmest month of the year is August with an average maximum temperature of 80.00 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 32.40 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 24 degrees Fahrenheit, and fairly limited during winter with an average difference of 12 degrees Fahrenheit.

The annual average precipitation at Cascade Locks is 77.97 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is December with an average rainfall of 12.77 Inches.

Weather Data

Normal Climate

Normal Temperatures

(BONNEVILLE DAM Weather station, 4.02 miles from Cascade Locks)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 43.3 47.4 54.3 60.1 67.0 72.7 79.3 80.0 74.7 63.8 51.0 43.8 61.5
Mean °F 37.9 40.9 45.8 50.7 56.8 62.1 67.7 68.1 63.5 55.0 45.3 38.9 52.7
Min °F 32.4 34.4 37.3 41.2 46.5 51.5 56.0 56.1 52.3 46.1 39.5 33.9 43.9

Normal Precipitation

(BONNEVILLE DAM Weather station, 4.02 miles from Cascade Locks)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 11.20 9.83 7.96 6.02 3.96 3.01 1.03 1.35 3.02 5.73 12.09 12.77 77.97