San Juan Bautista, CA 95004 Frost Dates
San Juan Bautista, CA: when does the frost end?
The last spring frost here typically falls around 01/28, about 153 days from today. Fall's first freeze usually shows up around 12/13, roughly 324 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 San Juan Bautista, not a forecast for this year.
Stretching the season past the first frost
With roughly 15 weeks until San Juan Bautista's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around San Juan Bautista's last frost
01/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/03 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.
San Juan Bautista against the rest of the dataset
About 324 days separate San Juan Bautista's last and first frost, putting it 3,232 of 40,283 ZIP codes nationally. Within CA, it ranks 1,383 of 2,555.
Learn more
Before leaning on 95004's figures: zone vs. frost date explains why Zone 9b and San Juan Bautista's frost date answer different questions, while the frost range explains how to read the range around San Juan Bautista's dates instead of trusting one.