Simi Valley California Climate Data

Monthly Average Climate Data for Simi Valley California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January46.0 °F65.7 °F3.68 in.
February45.4 °F66.1 °F4.13 in.
March46.7 °F68.4 °F2.58 in.
April48.1 °F70.3 °F0.65 in.
May51.5 °F72.9 °F0.42 in.
June54.6 °F76.8 °F0.04 in.
July58.6 °F82.5 °F0.03 in.
August58.9 °F84.3 °F0.0 in.
September57.9 °F83.4 °F0.08 in.
October54.2 °F78.4 °F0.61 in.
November49.3 °F72.4 °F0.88 in.
December45.2 °F65.5 °F2.5 in.
Annual51.4 °F73.9 °F15.6 in.

Climate Data for Simi Valley California

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
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