Knox City, TX 79529 Frost Dates
Frost dates for Knox City, TX, ZIP 79529
The last spring frost here typically falls around 03/26, about 210 days from today. The first fall frost typically arrives around 11/11, about 232 frost-free days later.
Zone 8a (10 to 15°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 Knox City, not a forecast for this year.
What to do before the first frost
Zone 8a around Knox City has about 11 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
03/26 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. 04/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Knox City compares
At roughly 232 frost-free days, Knox City places 10,062 of 40,283 ZIP codes in this dataset. Within TX, it ranks 2,120 of 2,558.
Learn more
zone vs. frost date explains why Zone 8a and Knox City's frost date answer different questions, and the frost range explains how to read the range around Knox City's dates instead of trusting one.