New Boston Illinois Climate Data

Monthly Average Climate Data for New Boston Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.6 °F31.6 °F1.41 in.
February18.8 °F35.9 °F1.67 in.
March29.8 °F48.6 °F2.42 in.
April40.9 °F62.0 °F3.5 in.
May52.5 °F72.8 °F4.8 in.
June62.4 °F82.4 °F4.8 in.
July65.8 °F85.9 °F3.64 in.
August63.4 °F83.9 °F3.91 in.
September55.3 °F77.4 °F3.42 in.
October43.5 °F64.5 °F2.72 in.
November32.0 °F49.9 °F2.2 in.
December21.5 °F36.7 °F1.83 in.
Annual41.8 °F61 °F36.32 in.

Climate Data for New Boston Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°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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