Alto, TX 75925 Frost Dates
When can you plant in Alto, TX?
Typically, the last spring freeze lands around 03/07, roughly 191 days out. The first fall frost typically arrives around 11/25, about 263 frost-free days later.
Alto sits in USDA Zone 8b (15 to 20°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
About 13 weeks of growing season left in Alto before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Alto's last frost
03/07 is the middle of 30 years of NOAA records, not a promise. Plant by 02/15 and you're betting against frost in roughly 9 years out of 10. 03/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Alto compares
At roughly 263 frost-free days, Alto places 6,130 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,122 of 2,558.
Learn more
zone vs. frost date covers why Zone 8b and Alto's frost date answer different questions. the frost range covers how to read the range around Alto's dates instead of trusting one.