Houston, TX 77501 Frost Dates
Frost dates for Houston, TX, ZIP 77501
The last spring frost here typically falls around 02/13, about 169 days from today. The first fall frost typically arrives around 12/09, about 300 frost-free days later.
Zone 9b (25 to 30°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 Houston, not a forecast for this year.
What to do before the first frost
Zone 9b around Houston has about 15 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.
How much risk comes with planting early here
02/13 is the middle of 30 years of NOAA records, not a promise. Plant by 01/12 and you're betting against frost in roughly 9 years out of 10. 03/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Houston compares
Houston's growing season runs about 300 days, ranking 4,083 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 415 of 2,558.
Learn more
the frost range explains how to read the range around Houston's dates instead of trusting one, and local microclimates explains what one yard in Houston can differ from the 77501 normal.