Montgomery, AL 36109 Frost Dates
36109, near Montgomery, AL: the frost window
Around 03/04 is the usual last spring frost, about 188 days away. Fall's first freeze usually shows up around 11/18, roughly 262 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Montgomery 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
Montgomery'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.
The actual range around Montgomery's last frost
03/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/23 and only about 1 year in 10 sees frost after that.
Montgomery against the rest of the dataset
Montgomery's growing season runs about 262 days, ranking 6,169 of 40,283 US ZIP codes measured here, longest to shortest. Within AL, it ranks 116 of 809.
Learn more
Two guides worth reading on 36109: the frost range, on how to read the range around Montgomery's dates instead of trusting one, and local microclimates, on what one yard in Montgomery can differ from the 36109 normal.