Hull, IL 63467 Frost Dates
When can you plant in Hull, IL?
The last spring frost here typically falls around 04/04, about 219 days from today. The first fall frost typically arrives around 11/04, about 212 frost-free days later.
Hull sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 10 weeks of growing season left in Hull before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Hull's last frost
04/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 04/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hull compares
About 212 days separate Hull's last and first frost, putting it 14,668 of 40,283 ZIP codes nationally. Within IL, it ranks 30 of 1,548.
Learn more
local microclimates covers what one yard in Hull can differ from the 63467 normal. zone vs. frost date covers why Zone 6b and Hull's frost date answer different questions.