What plant hardiness zone is Clay City

Clay City is located at Clay County, Illinois (IL), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Clay City is 6a by the USDA scale.

Coldest zone's winter temperature is −10 … -5 °F.

Plants of 6a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6a USDA.