Georgetown, IL 61846 Frost Dates
61846, near Georgetown, IL: the frost window
The last spring frost here typically falls around 04/23, about 238 days from today. Fall's first freeze usually shows up around 10/14, roughly 171 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 Georgetown, not a forecast for this year.
Stretching the season past the first frost
Georgetown's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/23 isn't a guarantee
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Georgetown against the rest of the dataset
About 171 days separate Georgetown's last and first frost, putting it 28,660 of 40,283 ZIP codes nationally. Within IL, it ranks 1,371 of 1,548.
Learn more
Two guides worth reading on 61846: local microclimates, on what one yard in Georgetown can differ from the 61846 normal, and zone vs. frost date, on why Zone 6a and Georgetown's frost date answer different questions.