Annapolis, MD 21412 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.
Zone 8a (10 to 15°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 Annapolis, not a forecast for this year.
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.
The actual range around Annapolis's last frost
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 9,708 of 40,283 ZIP codes nationally. Within MD, it ranks 75 of 583.
Learn more
local microclimates covers what one yard in Annapolis can differ from the 21412 normal. zone vs. frost date covers why Zone 8a and Annapolis's frost date answer different questions.