Bay City, TX 77456 Frost Dates
Bay City, TX: when does the frost end?
Around 02/20 is the usual last spring frost, about 176 days away. Fall's first freeze usually shows up around 12/03, roughly 290 days after the last spring frost.
Bay City sits in USDA Zone 9b (25 to 30°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 14 weeks until Bay City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 02/20 isn't a guarantee
02/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/15 and only about 1 year in 10 sees frost after that.
Bay City against the rest of the dataset
At roughly 290 frost-free days, Bay City places 4,492 of 40,283 ZIP codes in this dataset. Within TX, it ranks 633 of 2,558.
Learn more
Before leaning on 77456's figures: local microclimates explains what one yard in Bay City can differ from the 77456 normal, while zone vs. frost date explains why Zone 9b and Bay City's frost date answer different questions.