Annapolis, MD 21140 Frost Dates
When can you plant in Annapolis, MD?
Around 03/27 is the usual last spring frost, about 211 days away. The first fall frost typically arrives around 11/13, about 234 frost-free days later.
The USDA Plant Hardiness Zone Map puts Annapolis in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 11 weeks of growing season left in Annapolis before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
03/27 is the middle of 30 years of NOAA records, not a promise. Plant by 03/09 and you're betting against frost in roughly 9 years out of 10. 04/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Annapolis compares
About 234 days separate Annapolis's last and first frost, putting it 9,702 of 40,283 ZIP codes nationally. Within MD, it ranks 69 of 583.
Learn more
zone vs. frost date covers why Zone 7b and Annapolis's frost date answer different questions. the frost range covers how to read the range around Annapolis's dates instead of trusting one.