Church Hill, MD 21623 Frost Dates
Frost dates for Church Hill, MD, ZIP 21623
Typically, the last spring freeze lands around 04/03, roughly 218 days out. The first fall frost typically arrives around 11/05, about 217 frost-free days later.
Church Hill sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 7b around Church Hill has about 10 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.
Why 04/03 isn't a guarantee
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 Church Hill compares
About 217 days separate Church Hill's last and first frost, putting it 13,573 of 40,283 ZIP codes nationally. Within MD, it ranks 315 of 583.
Learn more
local microclimates explains what one yard in Church Hill can differ from the 21623 normal, and zone vs. frost date explains why Zone 7b and Church Hill's frost date answer different questions.