Blythe, CA 92266 Frost Dates
92266, near Blythe, CA: the frost window
The last spring frost here typically falls around 01/05, about 130 days from today. Fall's first freeze usually shows up around 12/21, roughly 347 days after the last spring frost.
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 Blythe, not a forecast for this year.
Stretching the season past the first frost
Blythe's growing season runs out in roughly 16 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
01/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/15 and only about 1 year in 10 sees frost after that.
Blythe against the rest of the dataset
About 347 days separate Blythe's last and first frost, putting it 2,397 of 40,283 ZIP codes nationally. Within CA, it ranks 1,084 of 2,555.
Learn more
Two guides worth reading on 92266: zone vs. frost date, on why Zone 10a and Blythe's frost date answer different questions, and the frost range, on how to read the range around Blythe's dates instead of trusting one.