Ballwin Missouri Climate Data

Monthly Average Climate Data for Ballwin Missouri

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.7 °F40.3 °F2.8 in.
February26.9 °F45.7 °F2.47 in.
March35.7 °F56.0 °F3.63 in.
April46.4 °F67.6 °F4.76 in.
May57.0 °F76.5 °F5.34 in.
June66.1 °F85.0 °F4.63 in.
July69.9 °F88.6 °F4.04 in.
August68.0 °F87.4 °F3.53 in.
September59.9 °F80.8 °F3.31 in.
October47.8 °F69.1 °F3.34 in.
November37.0 °F55.3 °F3.63 in.
December28.4 °F44.6 °F2.77 in.
Annual47.2 °F66.4 °F44.25 in.

Climate Data for Ballwin Missouri

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate