Earlville, IL 60518 Frost Dates
Earlville, IL: when does the frost end?
The last spring frost here typically falls around 04/27, about 242 days from today. Fall's first freeze usually shows up around 10/15, roughly 171 days after the last spring frost.
Earlville sits in USDA Zone 5b (-15 to -10°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 7 weeks until Earlville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Earlville's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Earlville against the rest of the dataset
Earlville's growing season runs about 171 days, ranking 28,700 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 1,376 of 1,548.
Learn more
Before leaning on 60518's figures: local microclimates explains what one yard in Earlville can differ from the 60518 normal, while zone vs. frost date explains why Zone 5b and Earlville's frost date answer different questions.