Dunfermline, IL 61524 Frost Dates
Frost dates for Dunfermline, IL, ZIP 61524
Around 04/17 is the usual last spring frost, about 232 days away. The first fall frost typically arrives around 10/19, about 185 frost-free days later.
The USDA Plant Hardiness Zone Map puts Dunfermline in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6a around Dunfermline has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dunfermline compares
Dunfermline's growing season runs about 185 days, ranking 23,328 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 850 of 1,548.
Learn more
the frost range explains how to read the range around Dunfermline's dates instead of trusting one, and local microclimates explains what one yard in Dunfermline can differ from the 61524 normal.