Sidney Illinois Climate Data

Monthly Average Climate Data for Sidney Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.1 °F33.9 °F2.3 in.
February21.2 °F38.4 °F2.06 in.
March30.4 °F50.2 °F2.78 in.
April41.0 °F63.6 °F4.1 in.
May52.6 °F74.0 °F4.45 in.
June61.8 °F82.3 °F4.8 in.
July64.4 °F84.5 °F4.17 in.
August62.0 °F83.1 °F3.03 in.
September54.8 °F78.6 °F3.21 in.
October43.1 °F66.0 °F3.35 in.
November32.5 °F51.3 °F3.24 in.
December23.9 °F38.8 °F2.43 in.
Annual42.2 °F62.1 °F39.92 in.

Climate Data for Sidney 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 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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