Rio Vista California Climate Data

Monthly Average Climate Data for Rio Vista California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January38.9 °F55.6 °F3.37 in.
February41.3 °F60.5 °F3.61 in.
March44.5 °F65.4 °F2.27 in.
April47.3 °F70.1 °F1.35 in.
May52.0 °F76.7 °F0.74 in.
June56.2 °F83.4 °F0.18 in.
July58.2 °F87.8 °F0.0 in.
August58.2 °F87.4 °F0.04 in.
September56.3 °F85.2 °F0.07 in.
October50.6 °F76.7 °F0.84 in.
November42.9 °F64.8 °F1.64 in.
December38.5 °F55.9 °F3.46 in.
Annual48.7 °F72.5 °F17.57 in.

Climate Data for Rio Vista California

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 9b : 25°F to 20°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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