Troy, AL 36081 Frost Dates
36081, near Troy, AL: the frost window
Typically, the last spring freeze lands around 03/10, roughly 194 days out. Fall's first freeze usually shows up around 11/21, roughly 257 days after the last spring frost.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Troy, not a forecast for this year.
Stretching the season past the first frost
Troy's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/30 and only about 1 year in 10 sees frost after that.
Troy against the rest of the dataset
At roughly 257 frost-free days, Troy places 6,684 of 40,283 ZIP codes in this dataset. Within AL, it ranks 149 of 809.
Learn more
Two guides worth reading on 36081: zone vs. frost date, on why Zone 8b and Troy's frost date answer different questions, and the frost range, on how to read the range around Troy's dates instead of trusting one.