New Haven Illinois Climate Data

Monthly Average Climate Data for New Haven Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January25.1 °F41.3 °F3.54 in.
February27.7 °F46.2 °F3.12 in.
March35.8 °F55.9 °F4.33 in.
April46.0 °F67.7 °F4.98 in.
May56.6 °F76.8 °F5.13 in.
June65.1 °F85.3 °F4.4 in.
July68.1 °F88.0 °F4.04 in.
August65.8 °F87.0 °F3.02 in.
September58.2 °F82.0 °F3.21 in.
October46.7 °F70.3 °F3.36 in.
November36.2 °F56.4 °F3.93 in.
December28.8 °F45.6 °F3.77 in.
Annual46.7 °F66.9 °F46.83 in.

Climate Data for New Haven Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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