Washington, NJ 07865 Frost Dates
Frost dates for Washington, NJ, ZIP 07865
Typically, the last spring freeze lands around 04/24, roughly 239 days out. The first fall frost typically arrives around 10/21, about 179 frost-free days later.
The USDA Plant Hardiness Zone Map puts Washington in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6b around Washington 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.
Why 04/24 isn't a guarantee
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/09 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Washington compares
About 179 days separate Washington's last and first frost, putting it 25,267 of 40,283 ZIP codes nationally. Within NJ, it ranks 753 of 906.
Learn more
local microclimates explains what one yard in Washington can differ from the 07865 normal, and zone vs. frost date explains why Zone 6b and Washington's frost date answer different questions.