Napoleon Missouri Climate Data

Monthly Average Climate Data for Napoleon Missouri

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.7 °F37.3 °F1.4 in.
February21.7 °F42.8 °F1.8 in.
March31.3 °F53.9 °F2.57 in.
April41.3 °F64.9 °F4.13 in.
May52.4 °F74.5 °F5.63 in.
June62.5 °F83.3 °F5.44 in.
July66.4 °F87.4 °F4.87 in.
August63.8 °F86.5 °F4.39 in.
September54.9 °F78.9 °F4.4 in.
October42.9 °F67.5 °F3.48 in.
November31.7 °F53.0 °F2.37 in.
December22.2 °F41.6 °F1.68 in.
Annual42.4 °F64.3 °F42.16 in.

Climate Data for Napoleon Missouri

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation