Brownstown Illinois Climate Data

Monthly Average Climate Data for Brownstown Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.1 °C2.8 °C73.41 mm
February-4.1 °C5.7 °C60.96 mm
March0.8 °C11.6 °C80.01 mm
April6.6 °C18.4 °C116.08 mm
May12.6 °C23.9 °C123.19 mm
June17.5 °C28.9 °C119.63 mm
July19.2 °C30.6 °C103.63 mm
August17.8 °C29.8 °C85.09 mm
September13.3 °C26.6 °C82.8 mm
October6.9 °C19.8 °C83.31 mm
November1.3 °C11.9 °C96.27 mm
December-3.3 °C5.4 °C68.33 mm
Annual6.9 °C18 °C1092.71 mm

Climate Data for Brownstown Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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