Graf Iowa Climate Data

Monthly Average Climate Data for Graf Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January10.3 °F26.9 °F1.27 in.
February13.7 °F31.4 °F1.45 in.
March25.4 °F44.4 °F2.11 in.
April36.5 °F58.2 °F3.85 in.
May48.2 °F69.9 °F4.62 in.
June58.7 °F79.4 °F5.87 in.
July62.2 °F82.6 °F4.82 in.
August60.0 °F80.8 °F4.16 in.
September51.2 °F74.1 °F3.87 in.
October39.4 °F61.1 °F2.92 in.
November27.8 °F45.5 °F2.28 in.
December17.0 °F32.7 °F1.7 in.
Annual37.5 °F57.3 °F38.92 in.

Climate Data for Graf Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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