Avenal, CA 93204 Frost Dates
Avenal, CA: when does the frost end?
Typically, the last spring freeze lands around 02/19, roughly 175 days out. Fall's first freeze usually shows up around 11/29, roughly 281 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Avenal in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 13 weeks until Avenal's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 02/19 isn't a guarantee
02/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/15 and only about 1 year in 10 sees frost after that.
Avenal against the rest of the dataset
Avenal's growing season runs about 281 days, ranking 4,791 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,770 of 2,555.
Learn more
Before leaning on 93204's figures: the frost range explains how to read the range around Avenal's dates instead of trusting one, while local microclimates explains what one yard in Avenal can differ from the 93204 normal.