Centralia, IL 62801 Frost Dates
Centralia, IL: when does the frost end?
Typically, the last spring freeze lands around 04/09, roughly 224 days out. Fall's first freeze usually shows up around 10/24, roughly 196 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Centralia in Zone 6b (-5 to 0°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 8 weeks until Centralia's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Centralia's last frost
04/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/27 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.
Centralia against the rest of the dataset
Centralia's growing season runs about 196 days, ranking 18,931 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 327 of 1,548.
Learn more
Before leaning on 62801's figures: local microclimates explains what one yard in Centralia can differ from the 62801 normal, while zone vs. frost date explains why Zone 6b and Centralia's frost date answer different questions.