Commerce, OK 74339 Frost Dates
74339, near Commerce, OK: the frost window
Around 04/06 is the usual last spring frost, about 221 days away. Fall's first freeze usually shows up around 10/27, roughly 203 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Commerce 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
Commerce'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
04/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 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.
Commerce against the rest of the dataset
Commerce's growing season runs about 203 days, ranking 16,933 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 627 of 764.
Learn more
Two guides worth reading on 74339: zone vs. frost date, on why Zone 7a and Commerce's frost date answer different questions, and the frost range, on how to read the range around Commerce's dates instead of trusting one.