Salisbury, MD 21803 Frost Dates
21803, near Salisbury, MD: the frost window
Around 04/02 is the usual last spring frost, about 217 days away. Fall's first freeze usually shows up around 11/10, roughly 222 days after the last spring frost.
Salisbury sits in USDA Zone 7b (5 to 10°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
Salisbury's growing season runs out in roughly 11 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
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/16 and only about 1 year in 10 sees frost after that.
Salisbury against the rest of the dataset
Salisbury's growing season runs about 222 days, ranking 12,204 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 131 of 583.
Learn more
Two guides worth reading on 21803: zone vs. frost date, on why Zone 7b and Salisbury's frost date answer different questions, and the frost range, on how to read the range around Salisbury's dates instead of trusting one.