Willows, CA 95943 Frost Dates
Willows, CA: when does the frost end?
Typically, the last spring freeze lands around 02/25, roughly 181 days out. Fall's first freeze usually shows up around 12/02, roughly 279 days after the last spring frost.
Willows sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 14 weeks until Willows's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Willows's last frost
02/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/06 and only about 1 year in 10 sees frost after that.
Willows against the rest of the dataset
About 279 days separate Willows's last and first frost, putting it 4,892 of 40,283 ZIP codes nationally. Within CA, it ranks 1,800 of 2,555.
Learn more
Before leaning on 95943's figures: the frost range explains how to read the range around Willows's dates instead of trusting one, while local microclimates explains what one yard in Willows can differ from the 95943 normal.