Willis, TX 77318 Frost Dates
When can you plant in Willis, TX?
The last spring frost here typically falls around 02/24, about 180 days from today. The first fall frost typically arrives around 12/02, about 285 frost-free days later.
The USDA Plant Hardiness Zone Map puts Willis in Zone 9a (20 to 25°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 Willis 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
02/24 is the middle of 30 years of NOAA records, not a promise. Plant by 01/26 and you're betting against frost in roughly 9 years out of 10. 03/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Willis compares
Willis's growing season runs about 285 days, ranking 4,631 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 695 of 2,558.
Learn more
zone vs. frost date covers why Zone 9a and Willis's frost date answer different questions. the frost range covers how to read the range around Willis's dates instead of trusting one.