Ardmore, OK 73401 Frost Dates
Ardmore, OK: when does the frost end?
The last spring frost here typically falls around 03/18, about 202 days from today. Fall's first freeze usually shows up around 11/10, roughly 238 days after the last spring frost.
Zone 8a (10 to 15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Ardmore, not a forecast for this year.
Stretching the season past the first frost
With roughly 11 weeks until Ardmore's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/18 isn't a guarantee
03/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/09 and only about 1 year in 10 sees frost after that.
Ardmore against the rest of the dataset
Ardmore's growing season runs about 238 days, ranking 8,939 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 5 of 764.
Learn more
Before leaning on 73401's figures: zone vs. frost date explains why Zone 8a and Ardmore's frost date answer different questions, while the frost range explains how to read the range around Ardmore's dates instead of trusting one.