Covina, CA 91723 Frost Dates
When can you plant in Covina, CA?
Typically, the last spring freeze lands around 01/08, roughly 133 days out. The first fall frost typically arrives around 12/28, about 354 frost-free days later.
Covina sits in USDA Zone 10a (30 to 35°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 17 weeks of growing season left in Covina before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Covina's last frost
01/08 is the middle of 30 years of NOAA records, not a promise. Plant by 02/18 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 Covina compares
About 354 days separate Covina's last and first frost, putting it 2,172 of 40,283 ZIP codes nationally. Within CA, it ranks 976 of 2,555.
Learn more
local microclimates covers what one yard in Covina can differ from the 91723 normal. zone vs. frost date covers why Zone 10a and Covina's frost date answer different questions.