Dunsmuir, CA 96016 Frost Dates
Dunsmuir, CA: when does the frost end?
Around 05/29 is the usual last spring frost, about 274 days away. Fall's first freeze usually shows up around 09/19, roughly 113 days after the last spring frost.
Zone 7b (5 to 10°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 Dunsmuir, not a forecast for this year.
Stretching the season past the first frost
With roughly 3 weeks until Dunsmuir's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/29 isn't a guarantee
05/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/23 and only about 1 year in 10 sees frost after that.
Dunsmuir against the rest of the dataset
At roughly 113 frost-free days, Dunsmuir places 39,395 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,500 of 2,555.
Learn more
Before leaning on 96016's figures: the frost range explains how to read the range around Dunsmuir's dates instead of trusting one, while local microclimates explains what one yard in Dunsmuir can differ from the 96016 normal.