Bel Air, MD 21013 Frost Dates
When can you plant in Bel Air, MD?
Typically, the last spring freeze lands around 04/02, roughly 217 days out. The first fall frost typically arrives around 11/07, about 220 frost-free days later.
Zone 7b (5 to 10°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 Bel Air, not a forecast for this year.
What to do before the first frost
About 10 weeks of growing season left in Bel Air before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/02 isn't a guarantee
04/02 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. 04/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bel Air compares
Bel Air's growing season runs about 220 days, ranking 12,766 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 166 of 583.
Learn more
zone vs. frost date covers why Zone 7b and Bel Air's frost date answer different questions. the frost range covers how to read the range around Bel Air's dates instead of trusting one.