Riverton, IL 62716 Frost Dates
When can you plant in Riverton, IL?
The last spring frost here typically falls around 04/14, about 229 days from today. The first fall frost typically arrives around 10/20, about 187 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Riverton, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Riverton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 04/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Riverton compares
At roughly 187 frost-free days, Riverton places 22,374 of 40,283 ZIP codes in this dataset. Within IL, it ranks 724 of 1,548.
Learn more
local microclimates covers what one yard in Riverton can differ from the 62716 normal. zone vs. frost date covers why Zone 6a and Riverton's frost date answer different questions.