Collinsville, AL 35961 Frost Dates
Collinsville, AL: 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 10/31, roughly 212 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Collinsville 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 9 weeks until Collinsville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/01 isn't a guarantee
04/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/13 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.
Collinsville against the rest of the dataset
About 212 days separate Collinsville's last and first frost, putting it 14,617 of 40,283 ZIP codes nationally. Within AL, it ranks 694 of 809.
Learn more
Before leaning on 35961's figures: the frost range explains how to read the range around Collinsville's dates instead of trusting one, while local microclimates explains what one yard in Collinsville can differ from the 35961 normal.