Placerville, CA 95651 Frost Dates
Placerville, CA: when does the frost end?
Typically, the last spring freeze lands around 03/31, roughly 215 days out. Fall's first freeze usually shows up around 11/21, roughly 237 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 Placerville, not a forecast for this year.
Stretching the season past the first frost
With roughly 12 weeks until Placerville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Placerville's last frost
03/31 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 04/23 and only about 1 year in 10 sees frost after that.
Placerville against the rest of the dataset
Placerville's growing season runs about 237 days, ranking 9,090 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,134 of 2,555.
Learn more
Before leaning on 95651's figures: zone vs. frost date explains why Zone 9b and Placerville's frost date answer different questions, while the frost range explains how to read the range around Placerville's dates instead of trusting one.