Grinnell Kansas Climate Data

Monthly Average Climate Data for Grinnell Kansas

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.5 °F42.7 °F0.4 in.
February19.0 °F45.9 °F0.61 in.
March26.9 °F56.2 °F1.15 in.
April35.7 °F64.7 °F1.93 in.
May47.2 °F74.4 °F3.25 in.
June58.1 °F86.0 °F2.85 in.
July63.4 °F90.9 °F3.67 in.
August61.5 °F88.3 °F2.99 in.
September52.3 °F80.9 °F1.71 in.
October38.8 °F68.0 °F1.66 in.
November26.7 °F54.5 °F0.7 in.
December18.1 °F43.8 °F0.66 in.
Annual38.7 °F66.4 °F21.58 in.

Climate Data for Grinnell Kansas

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 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
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