Franklin Iowa Climate Data

Monthly Average Climate Data for Franklin Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.1 °F33.0 °F1.55 in.
February19.7 °F37.7 °F1.88 in.
March30.1 °F50.2 °F2.53 in.
April41.0 °F63.1 °F3.76 in.
May52.8 °F73.3 °F5.13 in.
June62.5 °F82.7 °F4.97 in.
July66.2 °F86.3 °F4.21 in.
August64.0 °F84.8 °F3.83 in.
September55.4 °F78.2 °F3.79 in.
October43.8 °F65.3 °F3.07 in.
November32.1 °F50.4 °F2.47 in.
December22.0 °F38.0 °F1.93 in.
Annual42.1 °F61.9 °F39.12 in.

Climate Data for Franklin Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation