Park Ridge, IL 60631 Frost Dates
60631, near Park Ridge, IL: the frost window
Around 04/16 is the usual last spring frost, about 231 days away. Fall's first freeze usually shows up around 10/28, roughly 193 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Park Ridge in Zone 6a (-10 to -5°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
Park Ridge's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Park Ridge's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/01 and only about 1 year in 10 sees frost after that.
Park Ridge against the rest of the dataset
About 193 days separate Park Ridge's last and first frost, putting it 19,731 of 40,283 ZIP codes nationally. Within IL, it ranks 373 of 1,548.
Learn more
Two guides worth reading on 60631: the frost range, on how to read the range around Park Ridge's dates instead of trusting one, and local microclimates, on what one yard in Park Ridge can differ from the 60631 normal.