Rocklin, CA 95765 Frost Dates
When can you plant in Rocklin, CA?
Around 02/22 is the usual last spring frost, about 178 days away. The first fall frost typically arrives around 11/24, about 277 frost-free days later.
Rocklin sits in USDA Zone 9b (25 to 30°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 13 weeks of growing season left in Rocklin before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Rocklin's last frost
02/22 is the middle of 30 years of NOAA records, not a promise. Plant by 01/10 and you're betting against frost in roughly 9 years out of 10. 04/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rocklin compares
Rocklin's growing season runs about 277 days, ranking 4,957 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,812 of 2,555.
Learn more
the frost range covers how to read the range around Rocklin's dates instead of trusting one. local microclimates covers what one yard in Rocklin can differ from the 95765 normal.