Annapolis Illinois Climate Data

Monthly Average Climate Data for Annapolis Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.4 °F37.6 °F3.11 in.
February24.3 °F42.6 °F2.45 in.
March33.2 °F53.4 °F3.47 in.
April43.6 °F65.9 °F5.11 in.
May54.2 °F75.7 °F4.82 in.
June62.9 °F84.3 °F4.89 in.
July65.6 °F87.5 °F4.37 in.
August63.4 °F86.5 °F3.03 in.
September55.7 °F81.0 °F3.4 in.
October44.2 °F68.6 °F3.7 in.
November34.1 °F54.0 °F3.78 in.
December26.0 °F42.0 °F3.07 in.
Annual44.1 °F64.9 °F45.2 in.

Climate Data for Annapolis 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 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com