Palmer Illinois Climate Data

Monthly Average Climate Data for Palmer Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.5 °F35.5 °F2.28 in.
February23.0 °F40.6 °F1.98 in.
March32.1 °F51.9 °F2.77 in.
April42.5 °F64.7 °F4.22 in.
May53.7 °F74.9 °F4.69 in.
June62.7 °F83.4 °F4.46 in.
July65.6 °F86.4 °F3.75 in.
August63.4 °F85.2 °F3.28 in.
September55.3 °F80.0 °F3.25 in.
October43.9 °F67.6 °F3.28 in.
November33.5 °F52.4 °F3.24 in.
December24.8 °F40.5 °F2.35 in.
Annual43.3 °F63.6 °F39.55 in.

Climate Data for Palmer 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
2024 plantmaps.com