Franklin, IL 62638 Frost Dates
Franklin, IL: when does the frost end?
Typically, the last spring freeze lands around 04/19, roughly 234 days out. Fall's first freeze usually shows up around 10/17, roughly 179 days after the last spring frost.
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 Franklin, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Franklin's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Franklin against the rest of the dataset
At roughly 179 frost-free days, Franklin places 25,438 of 40,283 ZIP codes in this dataset. Within IL, it ranks 1,053 of 1,548.
Learn more
Before leaning on 62638's figures: the frost range explains how to read the range around Franklin's dates instead of trusting one, while local microclimates explains what one yard in Franklin can differ from the 62638 normal.