Boswell, OK 74727 Frost Dates
74727, near Boswell, OK: the frost window
Typically, the last spring freeze lands around 04/02, roughly 217 days out. Fall's first freeze usually shows up around 11/01, roughly 212 days after the last spring frost.
Boswell sits in USDA Zone 8a (10 to 15°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
Boswell'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 Boswell's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/20 and only about 1 year in 10 sees frost after that.
Boswell against the rest of the dataset
About 212 days separate Boswell's last and first frost, putting it 14,657 of 40,283 ZIP codes nationally. Within OK, it ranks 431 of 764.
Learn more
Two guides worth reading on 74727: local microclimates, on what one yard in Boswell can differ from the 74727 normal, and zone vs. frost date, on why Zone 8a and Boswell's frost date answer different questions.