Pittsburg, OK 74528 Frost Dates
Frost dates for Pittsburg, OK, ZIP 74528
Typically, the last spring freeze lands around 03/31, roughly 215 days out. The first fall frost typically arrives around 11/03, about 216 frost-free days later.
Zone 7b (5 to 10°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 Pittsburg, not a forecast for this year.
What to do before the first frost
Zone 7b around Pittsburg has about 10 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/11 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pittsburg compares
Pittsburg's growing season runs about 216 days, ranking 13,919 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 353 of 764.
Learn more
local microclimates explains what one yard in Pittsburg can differ from the 74528 normal, and zone vs. frost date explains why Zone 7b and Pittsburg's frost date answer different questions.