Sunnyvale, TX 75150 Frost Dates
Sunnyvale, TX: when does the frost end?
Typically, the last spring freeze lands around 03/02, roughly 186 days out. Fall's first freeze usually shows up around 11/29, roughly 272 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sunnyvale 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 13 weeks until Sunnyvale's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Sunnyvale's last frost
03/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/19 and only about 1 year in 10 sees frost after that.
Sunnyvale against the rest of the dataset
At roughly 272 frost-free days, Sunnyvale places 5,363 of 40,283 ZIP codes in this dataset. Within TX, it ranks 988 of 2,558.
Learn more
Before leaning on 75150's figures: zone vs. frost date explains why Zone 8b and Sunnyvale's frost date answer different questions, while the frost range explains how to read the range around Sunnyvale's dates instead of trusting one.