Tulsa, OK 74110 Frost Dates
Frost dates for Tulsa, OK, ZIP 74110
The last spring frost here typically falls around 03/31, about 215 days from today. The first fall frost typically arrives around 11/04, about 220 frost-free days later.
The USDA Plant Hardiness Zone Map puts Tulsa in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 7b around Tulsa 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.
The actual range around Tulsa's last frost
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. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Tulsa compares
At roughly 220 frost-free days, Tulsa places 12,661 of 40,283 ZIP codes in this dataset. Within OK, it ranks 146 of 764.
Learn more
local microclimates explains what one yard in Tulsa can differ from the 74110 normal, and zone vs. frost date explains why Zone 7b and Tulsa's frost date answer different questions.