Silas, AL 36919 Frost Dates
36919, near Silas, AL: the frost window
The last spring frost here typically falls around 03/26, about 210 days from today. Fall's first freeze usually shows up around 11/08, roughly 228 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 Silas, not a forecast for this year.
Stretching the season past the first frost
Silas's growing season runs out in roughly 10 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
03/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/11 and only about 1 year in 10 sees frost after that.
Silas against the rest of the dataset
At roughly 228 frost-free days, Silas places 10,915 of 40,283 ZIP codes in this dataset. Within AL, it ranks 575 of 809.
Learn more
Two guides worth reading on 36919: zone vs. frost date, on why Zone 8b and Silas's frost date answer different questions, and the frost range, on how to read the range around Silas's dates instead of trusting one.