Silvis Illinois Climate Data

Monthly Average Climate Data for Silvis Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.1 °F30.2 °F1.54 in.
February17.7 °F34.8 °F1.75 in.
March28.3 °F47.7 °F2.53 in.
April39.4 °F61.0 °F3.67 in.
May51.3 °F72.2 °F4.84 in.
June61.3 °F81.4 °F4.84 in.
July65.0 °F84.5 °F4.29 in.
August62.8 °F82.6 °F3.97 in.
September54.6 °F76.7 °F3.47 in.
October42.7 °F63.8 °F2.86 in.
November30.7 °F48.7 °F2.26 in.
December20.3 °F35.7 °F2.02 in.
Annual40.7 °F59.9 °F38.04 in.

Climate Data for Silvis 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 5b : -15°F to -10°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
2024 plantmaps.com