Susanville, CA 96136 Frost Dates
Susanville, CA: when does the frost end?
Typically, the last spring freeze lands around 05/21, roughly 266 days out. Fall's first freeze usually shows up around 10/01, roughly 130 days after the last spring frost.
Zone 7a (0 to 5°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 Susanville, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Susanville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/11 and only about 1 year in 10 sees frost after that.
Susanville against the rest of the dataset
About 130 days separate Susanville's last and first frost, putting it 38,364 of 40,283 ZIP codes nationally. Within CA, it ranks 2,469 of 2,555.
Learn more
Before leaning on 96136's figures: local microclimates explains what one yard in Susanville can differ from the 96136 normal, while zone vs. frost date explains why Zone 7a and Susanville's frost date answer different questions.