Cairo, IL 62914 Frost Dates
62914, near Cairo, IL: the frost window
Typically, the last spring freeze lands around 04/02, roughly 217 days out. Fall's first freeze usually shows up around 10/31, roughly 211 days after the last spring frost.
Cairo sits in USDA Zone 7a (0 to 5°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
Cairo'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 Cairo's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.
Cairo against the rest of the dataset
Cairo's growing season runs about 211 days, ranking 14,798 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 34 of 1,548.
Learn more
Two guides worth reading on 62914: the frost range, on how to read the range around Cairo's dates instead of trusting one, and local microclimates, on what one yard in Cairo can differ from the 62914 normal.