Manhattan Illinois Climate Data

Monthly Average Climate Data for Manhattan Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.6 °F32.0 °F2.14 in.
February19.5 °F35.9 °F2.09 in.
March29.1 °F47.5 °F2.38 in.
April39.6 °F60.6 °F3.87 in.
May50.2 °F71.5 °F4.64 in.
June60.2 °F81.0 °F4.63 in.
July64.4 °F84.7 °F4.65 in.
August62.9 °F82.9 °F4.11 in.
September55.4 °F77.0 °F3.45 in.
October43.1 °F63.8 °F3.33 in.
November32.3 °F49.5 °F2.51 in.
December22.3 °F37.0 °F2.19 in.
Annual41.3 °F60.3 °F39.99 in.

Climate Data for Manhattan Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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