Ullin, IL 62992 Frost Dates
Ullin, IL: when does the frost end?
Around 04/02 is the usual last spring frost, about 217 days away. Fall's first freeze usually shows up around 10/31, roughly 211 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Ullin in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 9 weeks until Ullin's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Ullin's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.
Ullin against the rest of the dataset
At roughly 211 frost-free days, Ullin places 14,848 of 40,283 ZIP codes in this dataset. Within IL, it ranks 41 of 1,548.
Learn more
Before leaning on 62992's figures: local microclimates explains what one yard in Ullin can differ from the 62992 normal, while zone vs. frost date explains why Zone 7a and Ullin's frost date answer different questions.