Newark, CA 94560 Frost Dates
Frost dates for Newark, CA, ZIP 94560
Around 01/07 is the usual last spring frost, about 132 days away. The first fall frost typically arrives around 12/22, about 353 frost-free days later.
Zone 10a (30 to 35°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 Newark, not a forecast for this year.
What to do before the first frost
Zone 10a around Newark has about 17 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 01/07 isn't a guarantee
01/07 is the middle of 30 years of NOAA records, not a promise. Plant by 02/07 and you're betting against frost in roughly 9 years out of 10. 12/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Newark compares
About 353 days separate Newark's last and first frost, putting it 2,225 of 40,283 ZIP codes nationally. Within CA, it ranks 1,001 of 2,555.
Learn more
local microclimates explains what one yard in Newark can differ from the 94560 normal, and zone vs. frost date explains why Zone 10a and Newark's frost date answer different questions.