Galena, MD 21930 Frost Dates
Frost dates for Galena, MD, ZIP 21930
The last spring frost here typically falls around 04/03, about 218 days from today. The first fall frost typically arrives around 11/05, about 217 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 Galena, not a forecast for this year.
What to do before the first frost
Zone 7b around Galena 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 Galena compares
About 217 days separate Galena's last and first frost, putting it 13,599 of 40,283 ZIP codes nationally. Within MD, it ranks 325 of 583.
Learn more
local microclimates explains what one yard in Galena can differ from the 21930 normal, and zone vs. frost date explains why Zone 7b and Galena's frost date answer different questions.