San Luis Obispo California Climate Data

Monthly Average Climate Data for San Luis Obispo California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January42.7 °F64.3 °F4.31 in.
February43.4 °F64.4 °F4.49 in.
March44.9 °F65.8 °F3.45 in.
April45.8 °F66.8 °F1.16 in.
May48.6 °F69.0 °F0.48 in.
June51.2 °F72.3 °F0.12 in.
July54.0 °F75.1 °F0.07 in.
August54.3 °F76.2 °F0.01 in.
September53.3 °F76.6 °F0.1 in.
October50.7 °F75.1 °F0.71 in.
November45.8 °F69.5 °F1.78 in.
December41.6 °F63.9 °F3.3 in.
Annual48 °F69.9 °F19.98 in.

Climate Data for San Luis Obispo California

Average First Frost DateDec. 21 - Dec. 31
Average Last Frost DateFeb. 11 - Feb. 20
Average Days With Frost5-10 Days
Plant Hardiness Zone - 2023Zone 10a : 30°F to 25°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate