Willits, CA 95469 Frost Dates
95469, near Willits, CA: the frost window
The last spring frost here typically falls around 04/08, about 223 days from today. Fall's first freeze usually shows up around 11/06, roughly 211 days after the last spring frost.
Zone 9a (20 to 25°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 Willits, not a forecast for this year.
Stretching the season past the first frost
Willits's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Willits against the rest of the dataset
Willits's growing season runs about 211 days, ranking 14,752 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,212 of 2,555.
Learn more
Two guides worth reading on 95469: local microclimates, on what one yard in Willits can differ from the 95469 normal, and zone vs. frost date, on why Zone 9a and Willits's frost date answer different questions.