Forsyth, IL 62535 Frost Dates
Forsyth, IL: when does the frost end?
The last spring frost here typically falls around 04/14, about 229 days from today. Fall's first freeze usually shows up around 10/24, roughly 192 days after the last spring frost.
Forsyth sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 8 weeks until Forsyth's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/14 isn't a guarantee
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/01 and only about 1 year in 10 sees frost after that.
Forsyth against the rest of the dataset
About 192 days separate Forsyth's last and first frost, putting it 20,307 of 40,283 ZIP codes nationally. Within IL, it ranks 421 of 1,548.
Learn more
Before leaning on 62535's figures: the frost range explains how to read the range around Forsyth's dates instead of trusting one, while local microclimates explains what one yard in Forsyth can differ from the 62535 normal.