Montevallo, AL 35115 Frost Dates
35115, near Montevallo, AL: the frost window
Around 03/12 is the usual last spring frost, about 196 days away. Fall's first freeze usually shows up around 11/16, roughly 248 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Montevallo 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
Montevallo's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Montevallo's last frost
03/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/31 and only about 1 year in 10 sees frost after that.
Montevallo against the rest of the dataset
Montevallo's growing season runs about 248 days, ranking 7,690 of 40,283 US ZIP codes measured here, longest to shortest. Within AL, it ranks 217 of 809.
Learn more
Two guides worth reading on 35115: zone vs. frost date, on why Zone 8b and Montevallo's frost date answer different questions, and the frost range, on how to read the range around Montevallo's dates instead of trusting one.