Riley Indiana Climate Data

Monthly Average Climate Data for Riley Indiana

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.4 °C2.5 °C80.52 mm
February-4.8 °C5.4 °C64.52 mm
March0.3 °C11.3 °C86.87 mm
April6.2 °C18.1 °C125.73 mm
May11.9 °C23.8 °C119.89 mm
June16.8 °C28.4 °C130.81 mm
July18.6 °C30.1 °C109.47 mm
August17.3 °C29.4 °C72.14 mm
September12.9 °C26.4 °C82.55 mm
October6.7 °C19.6 °C95 mm
November0.9 °C11.7 °C93.73 mm
December-3.7 °C5.1 °C76.96 mm
Annual6.4 °C17.7 °C1138.19 mm

Climate Data for Riley Indiana

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