Putnam, TX 76469 Frost Dates
76469, near Putnam, TX: the frost window
Typically, the last spring freeze lands around 03/27, roughly 211 days out. Fall's first freeze usually shows up around 11/07, roughly 225 days after the last spring frost.
Putnam sits in USDA Zone 8a (10 to 15°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.
Stretching the season past the first frost
Putnam's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/27 isn't a guarantee
03/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/16 and only about 1 year in 10 sees frost after that.
Putnam against the rest of the dataset
At roughly 225 frost-free days, Putnam places 11,519 of 40,283 ZIP codes in this dataset. Within TX, it ranks 2,264 of 2,558.
Learn more
Two guides worth reading on 76469: local microclimates, on what one yard in Putnam can differ from the 76469 normal, and zone vs. frost date, on why Zone 8a and Putnam's frost date answer different questions.