Willows, CA 95970 Frost Dates
95970, near Willows, CA: the frost window
The last spring frost here typically falls around 02/14, about 170 days from today. Fall's first freeze usually shows up around 12/01, roughly 293 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Willows 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
Willows's growing season runs out in roughly 14 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Willows's last frost
02/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/31 and only about 1 year in 10 sees frost after that.
Willows against the rest of the dataset
About 293 days separate Willows's last and first frost, putting it 4,289 of 40,283 ZIP codes nationally. Within CA, it ranks 1,665 of 2,555.
Learn more
Two guides worth reading on 95970: the frost range, on how to read the range around Willows's dates instead of trusting one, and local microclimates, on what one yard in Willows can differ from the 95970 normal.