Norwood, IL 61612 Frost Dates
Norwood, IL: when does the frost end?
Typically, the last spring freeze lands around 04/16, roughly 231 days out. Fall's first freeze usually shows up around 10/23, roughly 189 days after the last spring frost.
Norwood 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 8 weeks until Norwood's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/16 isn't a guarantee
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/04 and only about 1 year in 10 sees frost after that.
Norwood against the rest of the dataset
About 189 days separate Norwood's last and first frost, putting it 21,710 of 40,283 ZIP codes nationally. Within IL, it ranks 633 of 1,548.
Learn more
Before leaning on 61612's figures: the frost range explains how to read the range around Norwood's dates instead of trusting one, while local microclimates explains what one yard in Norwood can differ from the 61612 normal.