Gorham, IL 62940 Frost Dates
Frost dates for Gorham, IL, ZIP 62940
Typically, the last spring freeze lands around 04/09, roughly 224 days out. The first fall frost typically arrives around 10/22, about 195 frost-free days later.
Zone 7a (0 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 Gorham, not a forecast for this year.
What to do before the first frost
Zone 7a around Gorham has about 8 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.
The actual range around Gorham's last frost
04/09 is the middle of 30 years of NOAA records, not a promise. Plant by 03/24 and you're betting against frost in roughly 9 years out of 10. 04/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gorham compares
At roughly 195 frost-free days, Gorham places 19,383 of 40,283 ZIP codes in this dataset. Within IL, it ranks 356 of 1,548.
Learn more
the frost range explains how to read the range around Gorham's dates instead of trusting one, and local microclimates explains what one yard in Gorham can differ from the 62940 normal.