Otranto Iowa Climate Data

Monthly Average Climate Data for Otranto Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January6.8 °F23.4 °F1.03 in.
February10.7 °F27.9 °F1.11 in.
March22.9 °F40.3 °F1.94 in.
April35.0 °F55.8 °F3.82 in.
May47.3 °F68.3 °F4.94 in.
June58.0 °F78.1 °F5.29 in.
July61.4 °F81.3 °F4.75 in.
August58.7 °F79.1 °F4.09 in.
September50.1 °F72.9 °F3.5 in.
October37.5 °F59.3 °F2.7 in.
November25.4 °F42.9 °F1.75 in.
December13.9 °F29.1 °F1.39 in.
Annual35.6 °F54.9 °F36.31 in.

Climate Data for Otranto Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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