Hartsburg Illinois Climate Data

Monthly Average Climate Data for Hartsburg Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.5 °F34.1 °F2.19 in.
February20.9 °F38.9 °F1.95 in.
March30.3 °F50.8 °F2.6 in.
April40.9 °F63.9 °F3.74 in.
May52.6 °F74.3 °F4.44 in.
June62.1 °F83.0 °F4.45 in.
July64.9 °F85.8 °F4.13 in.
August62.7 °F84.2 °F3.57 in.
September54.6 °F79.3 °F3.27 in.
October42.9 °F66.5 °F3.15 in.
November32.1 °F51.5 °F2.81 in.
December23.1 °F39.2 °F2.25 in.
Annual42.1 °F62.6 °F38.55 in.

Climate Data for Hartsburg 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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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