Irwin Missouri Climate Data

Monthly Average Climate Data for Irwin Missouri

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.2 °F42.8 °F1.82 in.
February27.0 °F48.0 °F2.09 in.
March35.3 °F57.9 °F3.24 in.
April44.8 °F67.5 °F4.86 in.
May55.3 °F75.7 °F6.7 in.
June64.7 °F84.6 °F5.81 in.
July68.9 °F89.3 °F4.4 in.
August67.0 °F88.9 °F3.53 in.
September58.4 °F81.2 °F4.6 in.
October46.7 °F70.1 °F3.62 in.
November35.8 °F57.1 °F3.2 in.
December27.0 °F46.2 °F2.55 in.
Annual46.2 °F67.4 °F46.42 in.

Climate Data for Irwin 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 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate