Marshall, OK 73056 Frost Dates
Marshall, OK: when does the frost end?
Around 04/11 is the usual last spring frost, about 226 days away. Fall's first freeze usually shows up around 10/31, roughly 201 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Marshall 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
With roughly 9 weeks until Marshall's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/11 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.
Marshall against the rest of the dataset
Marshall's growing season runs about 201 days, ranking 17,664 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 652 of 764.
Learn more
Before leaning on 73056's figures: local microclimates explains what one yard in Marshall can differ from the 73056 normal, while zone vs. frost date explains why Zone 7a and Marshall's frost date answer different questions.