Brunswick, MD 21716 Frost Dates
Frost dates for Brunswick, MD, ZIP 21716
Around 04/26 is the usual last spring frost, about 241 days away. The first fall frost typically arrives around 10/18, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts Brunswick in Zone 7a (0 to 5°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
Zone 7a around Brunswick has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Brunswick's last frost
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Brunswick compares
About 175 days separate Brunswick's last and first frost, putting it 26,825 of 40,283 ZIP codes nationally. Within MD, it ranks 559 of 583.
Learn more
the frost range explains how to read the range around Brunswick's dates instead of trusting one, and local microclimates explains what one yard in Brunswick can differ from the 21716 normal.