Zeigler, IL 62999 Frost Dates
When can you plant in Zeigler, IL?
Typically, the last spring freeze lands around 04/06, roughly 221 days out. The first fall frost typically arrives around 10/22, about 199 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 Zeigler, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Zeigler before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/06 is the middle of 30 years of NOAA records, not a promise. Plant by 03/23 and you're betting against frost in roughly 9 years out of 10. 04/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Zeigler compares
Zeigler's growing season runs about 199 days, ranking 18,148 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 291 of 1,548.
Learn more
the frost range covers how to read the range around Zeigler's dates instead of trusting one. local microclimates covers what one yard in Zeigler can differ from the 62999 normal.