Blythe, CA 92226 Frost Dates
92226, near Blythe, CA: the frost window
The last spring frost here typically falls around 01/25, about 150 days from today. Fall's first freeze usually shows up around 12/12, roughly 325 days after the last spring frost.
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 Blythe, not a forecast for this year.
Stretching the season past the first frost
Blythe's growing season runs out in roughly 15 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Blythe's last frost
01/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/29 and only about 1 year in 10 sees frost after that.
Blythe against the rest of the dataset
At roughly 325 frost-free days, Blythe places 3,217 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,379 of 2,555.
Learn more
Two guides worth reading on 92226: zone vs. frost date, on why Zone 9b 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.