Burlington, OK 73722 Frost Dates
73722, near Burlington, OK: the frost window
Typically, the last spring freeze lands around 04/08, roughly 223 days out. Fall's first freeze usually shows up around 10/31, roughly 204 days after the last spring frost.
Burlington 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
Burlington'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
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/24 and only about 1 year in 10 sees frost after that.
Burlington against the rest of the dataset
Burlington's growing season runs about 204 days, ranking 16,789 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 612 of 764.
Learn more
Two guides worth reading on 73722: zone vs. frost date, on why Zone 7a and Burlington's frost date answer different questions, and the frost range, on how to read the range around Burlington's dates instead of trusting one.