Chireno, TX 75937 Frost Dates
75937, near Chireno, TX: the frost window
Around 03/18 is the usual last spring frost, about 202 days away. Fall's first freeze usually shows up around 11/13, roughly 240 days after the last spring frost.
Chireno 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.
Stretching the season past the first frost
Chireno's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/18 isn't a guarantee
03/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/08 and only about 1 year in 10 sees frost after that.
Chireno against the rest of the dataset
Chireno's growing season runs about 240 days, ranking 8,715 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 1,942 of 2,558.
Learn more
Two guides worth reading on 75937: zone vs. frost date, on why Zone 8b and Chireno's frost date answer different questions, and the frost range, on how to read the range around Chireno's dates instead of trusting one.