Sweetwater, OK 73666 Frost Dates
73666, near Sweetwater, OK: the frost window
Around 04/10 is the usual last spring frost, about 225 days away. Fall's first freeze usually shows up around 10/30, roughly 201 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sweetwater in Zone 7b (5 to 10°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
Sweetwater'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 Sweetwater's last frost
04/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Sweetwater against the rest of the dataset
About 201 days separate Sweetwater's last and first frost, putting it 17,686 of 40,283 ZIP codes nationally. Within OK, it ranks 661 of 764.
Learn more
Two guides worth reading on 73666: zone vs. frost date, on why Zone 7b and Sweetwater's frost date answer different questions, and the frost range, on how to read the range around Sweetwater's dates instead of trusting one.