Clayton Missouri Climate Data

Monthly Average Climate Data for Clayton Missouri

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.3 °F40.4 °F2.7 in.
February27.4 °F45.9 °F2.34 in.
March36.4 °F56.1 °F3.51 in.
April47.2 °F67.8 °F4.69 in.
May57.9 °F76.8 °F5.19 in.
June67.0 °F85.4 °F4.6 in.
July70.6 °F88.9 °F4.1 in.
August68.8 °F87.6 °F3.79 in.
September60.5 °F81.0 °F3.35 in.
October49.3 °F69.4 °F3.41 in.
November37.6 °F55.3 °F3.6 in.
December29.1 °F44.8 °F2.76 in.
Annual48 °F66.6 °F44.04 in.

Climate Data for Clayton Missouri

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate