Chestertown, MD 21620 Frost Dates
When can you plant in Chestertown, MD?
Around 04/03 is the usual last spring frost, about 218 days away. The first fall frost typically arrives around 11/05, about 217 frost-free days later.
The USDA Plant Hardiness Zone Map puts Chestertown 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 10 weeks of growing season left in Chestertown before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Chestertown's last frost
04/03 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 04/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Chestertown compares
About 217 days separate Chestertown's last and first frost, putting it 13,460 of 40,283 ZIP codes nationally. Within MD, it ranks 285 of 583.
Learn more
local microclimates covers what one yard in Chestertown can differ from the 21620 normal. zone vs. frost date covers why Zone 7b and Chestertown's frost date answer different questions.