Brenham, TX 77834 Frost Dates
When can you plant in Brenham, TX?
The last spring frost here typically falls around 03/02, about 186 days from today. The first fall frost typically arrives around 11/30, about 273 frost-free days later.
Zone 9a (20 to 25°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 Brenham, not a forecast for this year.
What to do before the first frost
About 13 weeks of growing season left in Brenham before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/02 isn't a guarantee
03/02 is the middle of 30 years of NOAA records, not a promise. Plant by 01/31 and you're betting against frost in roughly 9 years out of 10. 03/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Brenham compares
Brenham's growing season runs about 273 days, ranking 5,196 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 867 of 2,558.
Learn more
zone vs. frost date covers why Zone 9a and Brenham's frost date answer different questions. the frost range covers how to read the range around Brenham's dates instead of trusting one.