Clayton Missouri Climate Data

Monthly Average Climate Data for Clayton Missouri

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.3 °C4.7 °C68.58 mm
February-2.6 °C7.7 °C59.44 mm
March2.4 °C13.4 °C89.15 mm
April8.4 °C19.9 °C119.13 mm
May14.4 °C24.9 °C131.83 mm
June19.4 °C29.7 °C116.84 mm
July21.4 °C31.6 °C104.14 mm
August20.4 °C30.9 °C96.27 mm
September15.8 °C27.2 °C85.09 mm
October9.6 °C20.8 °C86.61 mm
November3.1 °C12.9 °C91.44 mm
December-1.6 °C7.1 °C70.1 mm
Annual8.9 °C19.2 °C1118.62 mm

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 : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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