Wilsonville, IL 62093 Frost Dates
Wilsonville, IL: when does the frost end?
The last spring frost here typically falls around 04/14, about 229 days from today. Fall's first freeze usually shows up around 10/21, roughly 188 days after the last spring frost.
Wilsonville 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.
Stretching the season past the first frost
With roughly 8 weeks until Wilsonville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Wilsonville's last frost
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Wilsonville against the rest of the dataset
At roughly 188 frost-free days, Wilsonville places 22,158 of 40,283 ZIP codes in this dataset. Within IL, it ranks 697 of 1,548.
Learn more
Before leaning on 62093's figures: the frost range explains how to read the range around Wilsonville's dates instead of trusting one, while local microclimates explains what one yard in Wilsonville can differ from the 62093 normal.