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Siletz, OR Weather


Siletz, OR climate is cool during summer when temperatures tend to be in the 50's and cold during winter when temperatures tend to be in the 40's.

The warmest month of the year is August with an average maximum temperature of 65.70 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 38.60 degrees Fahrenheit.

Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 15 degrees Fahrenheit, and fairly limited during winter with an average difference of 14 degrees Fahrenheit.

The annual average precipitation at Siletz is 69.57 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is December with an average rainfall of 11.38 Inches.

Weather Data

Normal Climate

Normal Temperatures

(NEWPORT Weather station, 8.14 miles from Siletz)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 51.4 53.5 54.7 56.7 59.8 62.7 65.0 65.7 65.3 61.2 55.0 51.4 58.5
Mean °F 45.0 46.4 47.3 48.9 52.3 55.6 57.9 58.3 57.2 53.1 48.5 45.1 51.3
Min °F 38.6 39.2 39.8 41.0 44.8 48.4 50.7 50.9 49.0 44.9 41.9 38.8 44.0

Normal Precipitation

(NEWPORT Weather station, 8.14 miles from Siletz)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 10.25 8.69 7.74 4.87 3.68 2.72 1.04 1.02 2.39 5.12 10.67 11.38 69.57