Red Bluff, CA 96075 Frost Dates
When can you plant in Red Bluff, CA?
The last spring frost here typically falls around 06/09, about 285 days from today. The first fall frost typically arrives around 09/21, about 102 frost-free days later.
Zone 9b (25 to 30°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 Red Bluff, not a forecast for this year.
What to do before the first frost
About 3 weeks of growing season left in Red Bluff before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Red Bluff's last frost
06/09 is the middle of 30 years of NOAA records, not a promise. Plant by 05/21 and you're betting against frost in roughly 9 years out of 10. 06/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Red Bluff compares
About 102 days separate Red Bluff's last and first frost, putting it 39,638 of 40,283 ZIP codes nationally. Within CA, it ranks 2,512 of 2,555.
Learn more
the frost range covers how to read the range around Red Bluff's dates instead of trusting one. local microclimates covers what one yard in Red Bluff can differ from the 96075 normal.