Hewitt, TX 76643 Frost Dates
Hewitt, TX: when does the frost end?
Typically, the last spring freeze lands around 03/09, roughly 193 days out. Fall's first freeze usually shows up around 11/20, roughly 256 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Hewitt in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 12 weeks until Hewitt's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/09 isn't a guarantee
03/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/04 and only about 1 year in 10 sees frost after that.
Hewitt against the rest of the dataset
At roughly 256 frost-free days, Hewitt places 6,801 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,477 of 2,558.
Learn more
Before leaning on 76643's figures: the frost range explains how to read the range around Hewitt's dates instead of trusting one, while local microclimates explains what one yard in Hewitt can differ from the 76643 normal.