Indian Head, MD 20616 Frost Dates
Frost dates for Indian Head, MD, ZIP 20616
Around 04/03 is the usual last spring frost, about 218 days away. The first fall frost typically arrives around 11/08, about 217 frost-free days later.
Indian Head 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 Indian Head 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.
How much risk comes with planting early here
04/03 is the middle of 30 years of NOAA records, not a promise. Plant by 03/19 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Indian Head compares
Indian Head's growing season runs about 217 days, ranking 13,469 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 291 of 583.
Learn more
zone vs. frost date explains why Zone 7b and Indian Head's frost date answer different questions, and the frost range explains how to read the range around Indian Head's dates instead of trusting one.