Bartlett Iowa Climate Data

Monthly Average Climate Data for Bartlett Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.5 °F33.1 °F0.79 in.
February16.7 °F38.6 °F1.02 in.
March27.9 °F51.7 °F1.78 in.
April38.5 °F63.7 °F3.35 in.
May51.0 °F73.9 °F5.43 in.
June61.7 °F83.4 °F5.11 in.
July65.6 °F86.6 °F3.86 in.
August62.9 °F85.3 °F3.55 in.
September53.2 °F78.9 °F3.11 in.
October40.5 °F66.6 °F2.58 in.
November27.6 °F50.5 °F1.54 in.
December17.8 °F37.9 °F1.17 in.
Annual39.7 °F62.5 °F33.29 in.

Climate Data for Bartlett Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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