Jefferson, TX 75651 Frost Dates
When can you plant in Jefferson, TX?
Typically, the last spring freeze lands around 03/10, roughly 194 days out. The first fall frost typically arrives around 11/15, about 251 frost-free days later.
Zone 8b (15 to 20°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 Jefferson, not a forecast for this year.
What to do before the first frost
About 11 weeks of growing season left in Jefferson before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/10 isn't a guarantee
03/10 is the middle of 30 years of NOAA records, not a promise. Plant by 02/18 and you're betting against frost in roughly 9 years out of 10. 03/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Jefferson compares
About 251 days separate Jefferson's last and first frost, putting it 7,341 of 40,283 ZIP codes nationally. Within TX, it ranks 1,626 of 2,558.
Learn more
local microclimates covers what one yard in Jefferson can differ from the 75651 normal. zone vs. frost date covers why Zone 8b and Jefferson's frost date answer different questions.