South Houston, TX 77017 Frost Dates
Frost dates for South Houston, TX, ZIP 77017
Around 01/30 is the usual last spring frost, about 155 days away. The first fall frost typically arrives around 12/28, about 330 frost-free days later.
South Houston sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 9b around South Houston has about 17 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.
The actual range around South Houston's last frost
01/30 is the middle of 30 years of NOAA records, not a promise. Plant by 03/01 and you're betting against frost in roughly 9 years out of 10. 12/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How South Houston compares
South Houston's growing season runs about 330 days, ranking 3,014 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 153 of 2,558.
Learn more
local microclimates explains what one yard in South Houston can differ from the 77017 normal, and zone vs. frost date explains why Zone 9b and South Houston's frost date answer different questions.