Carlinville, IL 62626 Frost Dates
When can you plant in Carlinville, IL?
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 Carlinville, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Carlinville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Carlinville'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 Carlinville compares
Carlinville's growing season runs about 188 days, ranking 21,982 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 674 of 1,548.
Learn more
the frost range covers how to read the range around Carlinville's dates instead of trusting one. local microclimates covers what one yard in Carlinville can differ from the 62626 normal.