St. David, IL 61563 Frost Dates
When can you plant in St. David, IL?
Around 04/17 is the usual last spring frost, about 232 days away. The first fall frost typically arrives around 10/19, about 185 frost-free days later.
The USDA Plant Hardiness Zone Map puts St. David in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 7 weeks of growing season left in St. David 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
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. David compares
St. David's growing season runs about 185 days, ranking 23,288 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 839 of 1,548.
Learn more
the frost range covers how to read the range around St. David's dates instead of trusting one. local microclimates covers what one yard in St. David can differ from the 61563 normal.