Brownstown Illinois Climate Data

Monthly Average Climate Data for Brownstown Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.1 °F37.1 °F2.89 in.
February24.6 °F42.2 °F2.4 in.
March33.4 °F52.9 °F3.15 in.
April43.8 °F65.1 °F4.57 in.
May54.7 °F75.0 °F4.85 in.
June63.5 °F84.0 °F4.71 in.
July66.5 °F87.0 °F4.08 in.
August64.1 °F85.7 °F3.35 in.
September55.9 °F79.8 °F3.26 in.
October44.4 °F67.7 °F3.28 in.
November34.4 °F53.4 °F3.79 in.
December26.1 °F41.8 °F2.69 in.
Annual44.4 °F64.3 °F43.02 in.

Climate Data for Brownstown 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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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