Gorham, IL 62950 Frost Dates
Gorham, IL: when does the frost end?
Typically, the last spring freeze lands around 04/09, roughly 224 days out. Fall's first freeze usually shows up around 10/22, roughly 195 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Gorham in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 8 weeks until Gorham'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
04/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/25 and only about 1 year in 10 sees frost after that.
Gorham against the rest of the dataset
Gorham's growing season runs about 195 days, ranking 19,384 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 357 of 1,548.
Learn more
Before leaning on 62950's figures: zone vs. frost date explains why Zone 7a and Gorham's frost date answer different questions, while the frost range explains how to read the range around Gorham's dates instead of trusting one.