Susanville, CA 96123 Frost Dates
96123, near Susanville, CA: the frost window
Around 06/14 is the usual last spring frost, about 290 days away. Fall's first freeze usually shows up around 09/18, roughly 94 days after the last spring frost.
Zone 6b (-5 to 0°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
Susanville's growing season runs out in roughly 3 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 Susanville's last frost
06/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 07/03 and only about 1 year in 10 sees frost after that.
Susanville against the rest of the dataset
About 94 days separate Susanville's last and first frost, putting it 39,819 of 40,283 ZIP codes nationally. Within CA, it ranks 2,528 of 2,555.
Learn more
Two guides worth reading on 96123: local microclimates, on what one yard in Susanville can differ from the 96123 normal, and zone vs. frost date, on why Zone 6b and Susanville's frost date answer different questions.