Sykesville, MD 21794 Frost Dates
21794, near Sykesville, MD: the frost window
Typically, the last spring freeze lands around 04/14, roughly 229 days out. Fall's first freeze usually shows up around 10/29, roughly 196 days after the last spring frost.
Sykesville 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.
Stretching the season past the first frost
Sykesville's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/02 and only about 1 year in 10 sees frost after that.
Sykesville against the rest of the dataset
Sykesville's growing season runs about 196 days, ranking 18,969 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 488 of 583.
Learn more
Two guides worth reading on 21794: zone vs. frost date, on why Zone 7b and Sykesville's frost date answer different questions, and the frost range, on how to read the range around Sykesville's dates instead of trusting one.