Tamms, IL 62988 Frost Dates
When can you plant in Tamms, IL?
The last spring frost here typically falls around 04/02, about 217 days from today. The first fall frost typically arrives around 10/31, about 211 frost-free days later.
Tamms sits in USDA Zone 7a (0 to 5°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 9 weeks of growing season left in Tamms before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Tamms's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/19 and you're betting against frost in roughly 9 years out of 10. 04/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Tamms compares
At roughly 211 frost-free days, Tamms places 14,869 of 40,283 ZIP codes in this dataset. Within IL, it ranks 42 of 1,548.
Learn more
the frost range covers how to read the range around Tamms's dates instead of trusting one. local microclimates covers what one yard in Tamms can differ from the 62988 normal.