Rockdale, IL 60432 Frost Dates
Rockdale, IL: when does the frost end?
Around 04/19 is the usual last spring frost, about 234 days away. Fall's first freeze usually shows up around 10/25, roughly 188 days after the last spring frost.
Rockdale 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.
Stretching the season past the first frost
With roughly 8 weeks until Rockdale's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Rockdale's last frost
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Rockdale against the rest of the dataset
At roughly 188 frost-free days, Rockdale places 22,080 of 40,283 ZIP codes in this dataset. Within IL, it ranks 684 of 1,548.
Learn more
Before leaning on 60432's figures: the frost range explains how to read the range around Rockdale's dates instead of trusting one, while local microclimates explains what one yard in Rockdale can differ from the 60432 normal.