Glassboro, NJ 08028 Frost Dates
When can you plant in Glassboro, NJ?
Around 04/08 is the usual last spring frost, about 223 days away. The first fall frost typically arrives around 11/01, about 205 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 Glassboro, not a forecast for this year.
What to do before the first frost
About 9 weeks of growing season left in Glassboro before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/08 isn't a guarantee
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/27 and you're betting against frost in roughly 9 years out of 10. 04/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Glassboro compares
Glassboro's growing season runs about 205 days, ranking 16,185 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 359 of 906.
Learn more
the frost range covers how to read the range around Glassboro's dates instead of trusting one. local microclimates covers what one yard in Glassboro can differ from the 08028 normal.