Jerseyville, IL 62052 Frost Dates
Frost dates for Jerseyville, IL, ZIP 62052
Around 04/14 is the usual last spring frost, about 229 days away. The first fall frost typically arrives around 10/19, about 187 frost-free days later.
Zone 6b (-5 to 0°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 Jerseyville, not a forecast for this year.
What to do before the first frost
Zone 6b around Jerseyville 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.
The actual range around Jerseyville's last frost
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Jerseyville compares
At roughly 187 frost-free days, Jerseyville places 22,322 of 40,283 ZIP codes in this dataset. Within IL, it ranks 717 of 1,548.
Learn more
local microclimates explains what one yard in Jerseyville can differ from the 62052 normal, and zone vs. frost date explains why Zone 6b and Jerseyville's frost date answer different questions.