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Boulder Creek, CA Weather


Boulder Creek, CA climate is mild during summer when temperatures tend to be in the 60's and cool during winter when temperatures tend to be in the 50's.

The warmest month of the year is August with an average maximum temperature of 85.70 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 34.90 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 36 degrees Fahrenheit, and moderate during winter with an average difference of 25 degrees Fahrenheit.

The annual average precipitation at Boulder Creek is 47.68 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 10.29 Inches.

Weather Data

Normal Climate

Normal Temperatures

(BEN LOMOND NO 4 Weather station, 3.91 miles from Boulder Creek)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 61.4 63.9 66.3 72.2 76.5 82.1 85.4 85.7 84.1 78.1 67.3 61.5 73.7
Mean °F 48.9 51.3 53.2 56.7 60.6 64.8 67.5 67.7 66.1 60.9 52.8 48.2 58.2
Min °F 36.3 38.6 40.1 41.1 44.6 47.5 49.5 49.6 48.1 43.6 38.3 34.9 42.7

Normal Precipitation

(BEN LOMOND NO 4 Weather station, 3.91 miles from Boulder Creek)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 10.29 9.74 7.51 2.77 1.04 0.23 0.11 0.15 0.48 2.17 6.13 7.06 47.68