Towanda, IL 61776 Frost Dates
When can you plant in Towanda, IL?
Around 04/25 is the usual last spring frost, about 240 days away. The first fall frost typically arrives around 10/16, about 172 frost-free days later.
Towanda sits in USDA Zone 6a (-10 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 7 weeks of growing season left in Towanda before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 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 Towanda compares
At roughly 172 frost-free days, Towanda places 28,464 of 40,283 ZIP codes in this dataset. Within IL, it ranks 1,357 of 1,548.
Learn more
zone vs. frost date covers why Zone 6a and Towanda's frost date answer different questions. the frost range covers how to read the range around Towanda's dates instead of trusting one.