Riverside, AL 35182 Frost Dates
Riverside, AL: when does the frost end?
Around 03/26 is the usual last spring frost, about 210 days away. Fall's first freeze usually shows up around 11/04, roughly 225 days after the last spring frost.
Riverside sits in USDA Zone 8a (10 to 15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 10 weeks until Riverside's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/26 isn't a guarantee
03/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/14 and only about 1 year in 10 sees frost after that.
Riverside against the rest of the dataset
At roughly 225 frost-free days, Riverside places 11,432 of 40,283 ZIP codes in this dataset. Within AL, it ranks 593 of 809.
Learn more
Before leaning on 35182's figures: zone vs. frost date explains why Zone 8a and Riverside's frost date answer different questions, while the frost range explains how to read the range around Riverside's dates instead of trusting one.