Bluffs Illinois Climate Data

Monthly Average Climate Data for Bluffs Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.7 °F35.7 °F2.18 in.
February22.1 °F40.9 °F1.93 in.
March31.3 °F52.2 °F2.74 in.
April41.8 °F64.9 °F4.03 in.
May53.0 °F74.7 °F4.74 in.
June62.3 °F83.4 °F4.94 in.
July65.9 °F86.8 °F4.02 in.
August63.4 °F85.7 °F3.59 in.
September55.2 °F79.8 °F3.38 in.
October43.6 °F67.5 °F3.09 in.
November32.8 °F53.0 °F2.96 in.
December24.0 °F40.7 °F2.37 in.
Annual42.8 °F63.8 °F39.97 in.

Climate Data for Bluffs Illinois

Average First Frost DateOct. 11 - Oct. 20
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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