Susanville, CA 96020 Frost Dates
Susanville, CA: when does the frost end?
The last spring frost here typically falls around 05/28, about 273 days from today. Fall's first freeze usually shows up around 09/28, roughly 124 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Susanville in Zone 7a (0 to 5°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
With roughly 4 weeks until Susanville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/28 isn't a guarantee
05/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/13 and only about 1 year in 10 sees frost after that.
Susanville against the rest of the dataset
At roughly 124 frost-free days, Susanville places 38,824 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,484 of 2,555.
Learn more
Before leaning on 96020's figures: the frost range explains how to read the range around Susanville's dates instead of trusting one, while local microclimates explains what one yard in Susanville can differ from the 96020 normal.