Arvin, CA 93203 Frost Dates
Arvin, CA: when does the frost end?
Typically, the last spring freeze lands around 01/17, roughly 142 days out. Fall's first freeze usually shows up around 12/15, roughly 334 days after the last spring frost.
Arvin 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.
Stretching the season past the first frost
With roughly 16 weeks until Arvin's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 01/17 isn't a guarantee
01/17 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 12/23 and only about 1 year in 10 sees frost after that.
Arvin against the rest of the dataset
About 334 days separate Arvin's last and first frost, putting it 2,765 of 40,283 ZIP codes nationally. Within CA, it ranks 1,255 of 2,555.
Learn more
Before leaning on 93203's figures: the frost range explains how to read the range around Arvin's dates instead of trusting one, while local microclimates explains what one yard in Arvin can differ from the 93203 normal.