FrostDateCheck

Jet, OK 73749 Frost Dates

73749, near Jet, OK: the frost window

Zone 7a

Typically, the last spring freeze lands around 04/10, roughly 225 days out. Fall's first freeze usually shows up around 10/29, roughly 201 days after the last spring frost.

The USDA Plant Hardiness Zone Map puts Jet in Zone 7a (0 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

Jet'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.

How much risk comes with planting early here

04/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/26 and only about 1 year in 10 sees frost after that.

Jet against the rest of the dataset

At roughly 201 frost-free days, Jet places 17,666 of 40,283 ZIP codes in this dataset. Within OK, it ranks 653 of 764.

Learn more

Two guides worth reading on 73749: zone vs. frost date, on why Zone 7a and Jet's frost date answer different questions, and the frost range, on how to read the range around Jet's dates instead of trusting one.