Streator, IL 61364 Frost Dates
61364, near Streator, IL: the frost window
Around 04/12 is the usual last spring frost, about 227 days away. Fall's first freeze usually shows up around 10/28, roughly 199 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Streator in Zone 5b (-15 to -10°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
Streator's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/25 and only about 1 year in 10 sees frost after that.
Streator against the rest of the dataset
About 199 days separate Streator's last and first frost, putting it 18,064 of 40,283 ZIP codes nationally. Within IL, it ranks 288 of 1,548.
Learn more
Two guides worth reading on 61364: local microclimates, on what one yard in Streator can differ from the 61364 normal, and zone vs. frost date, on why Zone 5b and Streator's frost date answer different questions.