Califon, NJ 07830 Frost Dates
When can you plant in Califon, NJ?
Around 04/26 is the usual last spring frost, about 241 days away. The first fall frost typically arrives around 10/18, about 176 frost-free days later.
Califon sits in USDA Zone 6b (-5 to 0°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
About 7 weeks of growing season left in Califon before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Califon compares
Califon's growing season runs about 176 days, ranking 26,539 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 802 of 906.
Learn more
local microclimates covers what one yard in Califon can differ from the 07830 normal. zone vs. frost date covers why Zone 6b and Califon's frost date answer different questions.