Sonora, TX 76950 Frost Dates
Sonora, TX: when does the frost end?
Around 04/01 is the usual last spring frost, about 216 days away. Fall's first freeze usually shows up around 11/06, roughly 221 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sonora in Zone 8a (10 to 15°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 10 weeks until Sonora's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/20 and only about 1 year in 10 sees frost after that.
Sonora against the rest of the dataset
About 221 days separate Sonora's last and first frost, putting it 12,524 of 40,283 ZIP codes nationally. Within TX, it ranks 2,292 of 2,558.
Learn more
Before leaning on 76950's figures: zone vs. frost date explains why Zone 8a and Sonora's frost date answer different questions, while the frost range explains how to read the range around Sonora's dates instead of trusting one.