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San Luis Obispo, CA Weather


San Luis Obispo, 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 September with an average maximum temperature of 81.80 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 41.60 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 28 degrees Fahrenheit, and moderate during winter with an average difference of 23 degrees Fahrenheit.

The annual average precipitation at San Luis Obispo is 24.36 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is February with an average rainfall of 5.41 Inches.

Weather Data

Moon, Sunrise and Sunset

Waning Crescent Moon Moon Phase: Waning Crescent Moon Civil Twilight:
6:37 AM PST
Sunrise:
7:05 AM PST
Sunset:
4:52 PM PST
Civil Twilight:
5:20 PM PST

Normal Climate

Normal Temperatures

(SAN LUIS OBISPO POLYTECH Weather station, 1.35 miles from San Luis Obispo)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 64.6 65.9 66.8 70.8 73.2 77.6 80.3 81.7 81.8 78.7 72.0 66.4 73.3
Mean °F 53.3 54.8 55.7 58.1 60.4 64.1 66.5 67.5 67.3 64.3 58.8 54.0 60.4
Min °F 41.9 43.6 44.5 45.4 47.5 50.6 52.7 53.3 52.8 49.8 45.5 41.6 47.4

Normal Precipitation

(SAN LUIS OBISPO POLYTECH Weather station, 1.35 miles from San Luis Obispo)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 5.28 5.41 4.48 1.31 0.47 0.09 0.03 0.08 0.44 0.99 2.17 3.61 24.36