Wood River, IL 62095 Frost Dates
Wood River, IL: when does the frost end?
Typically, the last spring freeze lands around 04/04, roughly 219 days out. Fall's first freeze usually shows up around 11/05, roughly 214 days after the last spring frost.
Zone 7a (0 to 5°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 Wood River, not a forecast for this year.
Stretching the season past the first frost
With roughly 10 weeks until Wood River's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/04 isn't a guarantee
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/19 and only about 1 year in 10 sees frost after that.
Wood River against the rest of the dataset
About 214 days separate Wood River's last and first frost, putting it 14,238 of 40,283 ZIP codes nationally. Within IL, it ranks 14 of 1,548.
Learn more
Before leaning on 62095's figures: the frost range explains how to read the range around Wood River's dates instead of trusting one, while local microclimates explains what one yard in Wood River can differ from the 62095 normal.