Susanville, CA 96114 Frost Dates
Susanville, CA: when does the frost end?
Around 05/18 is the usual last spring frost, about 263 days away. Fall's first freeze usually shows up around 10/08, roughly 143 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 6 weeks until Susanville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Susanville's last frost
05/18 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 06/09 and only about 1 year in 10 sees frost after that.
Susanville against the rest of the dataset
Susanville's growing season runs about 143 days, ranking 36,508 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,440 of 2,555.
Learn more
Before leaning on 96114's figures: local microclimates explains what one yard in Susanville can differ from the 96114 normal, while zone vs. frost date explains why Zone 7a and Susanville's frost date answer different questions.