Walshville, IL 62091 Frost Dates
Frost dates for Walshville, IL, ZIP 62091
Typically, the last spring freeze lands around 04/14, roughly 229 days out. The first fall frost typically arrives around 10/21, about 188 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 Walshville, not a forecast for this year.
What to do before the first frost
Zone 6b around Walshville 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 Walshville'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 Walshville compares
Walshville's growing season runs about 188 days, ranking 22,265 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 711 of 1,548.
Learn more
zone vs. frost date explains why Zone 6b and Walshville's frost date answer different questions, and the frost range explains how to read the range around Walshville's dates instead of trusting one.