Mason, TX 76820 Frost Dates
Mason, TX: when does the frost end?
Around 03/18 is the usual last spring frost, about 202 days away. Fall's first freeze usually shows up around 11/13, roughly 241 days after the last spring frost.
Mason 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
With roughly 11 weeks until Mason's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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 02/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/07 and only about 1 year in 10 sees frost after that.
Mason against the rest of the dataset
At roughly 241 frost-free days, Mason places 8,560 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,902 of 2,558.
Learn more
Before leaning on 76820's figures: local microclimates explains what one yard in Mason can differ from the 76820 normal, while zone vs. frost date explains why Zone 8b and Mason's frost date answer different questions.