Keokuk Iowa Climate Data

Monthly Average Climate Data for Keokuk Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.3 °F33.8 °F1.68 in.
February20.8 °F38.4 °F1.85 in.
March31.0 °F50.6 °F2.57 in.
April41.9 °F63.2 °F4.05 in.
May53.3 °F73.4 °F5.36 in.
June63.1 °F82.5 °F5.04 in.
July66.9 °F86.3 °F4.21 in.
August64.7 °F84.7 °F3.77 in.
September56.3 °F78.2 °F3.61 in.
October44.5 °F65.6 °F3.26 in.
November32.9 °F51.2 °F2.63 in.
December22.9 °F38.7 °F1.95 in.
Annual43 °F62.2 °F39.98 in.

Climate Data for Keokuk Iowa

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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation