Fairmont, OK 73705 Frost Dates
When can you plant in Fairmont, OK?
Around 04/11 is the usual last spring frost, about 226 days away. The first fall frost typically arrives around 10/31, about 201 frost-free days later.
Fairmont 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.
What to do before the first frost
About 9 weeks of growing season left in Fairmont before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/11 isn't a guarantee
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/24 and you're betting against frost in roughly 9 years out of 10. 04/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fairmont compares
Fairmont's growing season runs about 201 days, ranking 17,681 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 658 of 764.
Learn more
the frost range covers how to read the range around Fairmont's dates instead of trusting one. local microclimates covers what one yard in Fairmont can differ from the 73705 normal.