Tulsa, OK 74106 Frost Dates
Tulsa, OK: when does the frost end?
The last spring frost here typically falls around 03/31, about 215 days from today. Fall's first freeze usually shows up around 11/04, roughly 220 days after the last spring frost.
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 Tulsa, not a forecast for this year.
Stretching the season past the first frost
With roughly 10 weeks until Tulsa'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
03/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Tulsa against the rest of the dataset
About 220 days separate Tulsa's last and first frost, putting it 12,660 of 40,283 ZIP codes nationally. Within OK, it ranks 145 of 764.
Learn more
Before leaning on 74106's figures: local microclimates explains what one yard in Tulsa can differ from the 74106 normal, while zone vs. frost date explains why Zone 7b and Tulsa's frost date answer different questions.