South Lake Tahoe, CA 89449 Frost Dates
89449, near South Lake Tahoe, CA: the frost window
Typically, the last spring freeze lands around 06/07, roughly 283 days out. Fall's first freeze usually shows up around 09/28, roughly 113 days after the last spring frost.
South Lake Tahoe sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
South Lake Tahoe's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 06/07 isn't a guarantee
06/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/24 and only about 1 year in 10 sees frost after that.
South Lake Tahoe against the rest of the dataset
At roughly 113 frost-free days, South Lake Tahoe places 39,384 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,496 of 2,555.
Learn more
Two guides worth reading on 89449: the frost range, on how to read the range around South Lake Tahoe's dates instead of trusting one, and local microclimates, on what one yard in South Lake Tahoe can differ from the 89449 normal.