Quincy Illinois Climate Data

Monthly Average Climate Data for Quincy Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.6 °F35.1 °F1.78 in.
February22.4 °F40.3 °F2.07 in.
March31.6 °F51.8 °F2.61 in.
April42.8 °F64.5 °F4.03 in.
May54.0 °F74.2 °F4.95 in.
June63.6 °F83.2 °F4.67 in.
July67.0 °F87.2 °F3.9 in.
August64.9 °F85.7 °F3.9 in.
September56.5 °F78.9 °F3.53 in.
October45.0 °F66.5 °F3.18 in.
November33.6 °F52.2 °F2.65 in.
December24.0 °F39.8 °F1.96 in.
Annual43.7 °F63.3 °F39.23 in.

Climate Data for Quincy Illinois

Average First Frost DateOct. 21 - Oct. 31
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 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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