Wataga, IL 61488 Frost Dates
61488, near Wataga, IL: the frost window
Around 04/20 is the usual last spring frost, about 235 days away. Fall's first freeze usually shows up around 10/19, roughly 180 days after the last spring frost.
Zone 5b (-15 to -10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Wataga, not a forecast for this year.
Stretching the season past the first frost
Wataga's growing season runs out in roughly 7 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
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Wataga against the rest of the dataset
Wataga's growing season runs about 180 days, ranking 24,994 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 969 of 1,548.
Learn more
Two guides worth reading on 61488: the frost range, on how to read the range around Wataga's dates instead of trusting one, and local microclimates, on what one yard in Wataga can differ from the 61488 normal.