Montgomery, IL 60512 Frost Dates
When can you plant in Montgomery, IL?
Around 04/28 is the usual last spring frost, about 243 days away. The first fall frost typically arrives around 10/13, about 166 frost-free days later.
Zone 5b (-15 to -10°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 Montgomery, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Montgomery 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
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Montgomery compares
Montgomery's growing season runs about 166 days, ranking 30,302 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 1,467 of 1,548.
Learn more
the frost range covers how to read the range around Montgomery's dates instead of trusting one. local microclimates covers what one yard in Montgomery can differ from the 60512 normal.