Tomball, TX 77375 Frost Dates
When can you plant in Tomball, TX?
The last spring frost here typically falls around 02/19, about 175 days from today. The first fall frost typically arrives around 12/03, about 290 frost-free days later.
The USDA Plant Hardiness Zone Map puts Tomball in Zone 9b (25 to 30°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
About 14 weeks of growing season left in Tomball before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
02/19 is the middle of 30 years of NOAA records, not a promise. Plant by 01/21 and you're betting against frost in roughly 9 years out of 10. 03/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Tomball compares
About 290 days separate Tomball's last and first frost, putting it 4,496 of 40,283 ZIP codes nationally. Within TX, it ranks 637 of 2,558.
Learn more
zone vs. frost date covers why Zone 9b and Tomball's frost date answer different questions. the frost range covers how to read the range around Tomball's dates instead of trusting one.