Havana Illinois Climate Data

Monthly Average Climate Data for Havana Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.0 °F34.2 °F1.95 in.
February20.4 °F38.9 °F1.96 in.
March30.3 °F51.1 °F2.5 in.
April40.7 °F63.9 °F4.04 in.
May52.5 °F74.6 °F4.97 in.
June61.9 °F83.5 °F4.88 in.
July65.1 °F86.7 °F4.05 in.
August62.8 °F85.3 °F3.68 in.
September54.3 °F79.9 °F3.45 in.
October42.2 °F67.0 °F3.19 in.
November31.8 °F51.9 °F2.74 in.
December22.8 °F39.6 °F2.23 in.
Annual41.8 °F63.1 °F39.64 in.

Climate Data for Havana Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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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