Avenal, CA 93239 Frost Dates
Avenal, CA: when does the frost end?
The last spring frost here typically falls around 02/19, about 175 days from today. Fall's first freeze usually shows up around 11/29, roughly 281 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 Avenal, not a forecast for this year.
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
About 281 days separate Avenal's last and first frost, putting it 4,792 of 40,283 ZIP codes nationally. Within CA, it ranks 1,771 of 2,555.
Learn more
Before leaning on 93239'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 93239 normal.