Julian California Climate Data

Monthly Average Climate Data for Julian California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January37.7 °F55.3 °F5.18 in.
February37.2 °F54.8 °F5.8 in.
March39.2 °F59.3 °F4.21 in.
April40.7 °F63.2 °F1.92 in.
May45.6 °F69.9 °F0.85 in.
June53.5 °F80.0 °F0.13 in.
July60.8 °F86.6 °F0.3 in.
August61.0 °F87.6 °F0.47 in.
September56.0 °F82.7 °F0.48 in.
October48.1 °F72.4 °F1.09 in.
November42.0 °F62.5 °F2.16 in.
December36.9 °F54.4 °F3.85 in.
Annual46.6 °F69.1 °F26.44 in.

Climate Data for Julian California

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 9a : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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