South Amboy, NJ 08879 Frost Dates
Frost dates for South Amboy, NJ, ZIP 08879
Around 04/17 is the usual last spring frost, about 232 days away. The first fall frost typically arrives around 10/23, about 190 frost-free days later.
South Amboy 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 South Amboy has about 8 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.
The actual range around South Amboy's last frost
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How South Amboy compares
About 190 days separate South Amboy's last and first frost, putting it 21,096 of 40,283 ZIP codes nationally. Within NJ, it ranks 561 of 906.
Learn more
local microclimates explains what one yard in South Amboy can differ from the 08879 normal, and zone vs. frost date explains why Zone 7b and South Amboy's frost date answer different questions.