Big Bear Lake, CA 92314 Frost Dates
Frost dates for Big Bear Lake, CA, ZIP 92314
Typically, the last spring freeze lands around 05/27, roughly 272 days out. The first fall frost typically arrives around 10/04, about 131 frost-free days later.
Big Bear Lake 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.
What to do before the first frost
Zone 7a around Big Bear Lake has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/27 is the middle of 30 years of NOAA records, not a promise. Plant by 05/06 and you're betting against frost in roughly 9 years out of 10. 06/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Big Bear Lake compares
At roughly 131 frost-free days, Big Bear Lake places 38,266 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,460 of 2,555.
Learn more
the frost range explains how to read the range around Big Bear Lake's dates instead of trusting one, and local microclimates explains what one yard in Big Bear Lake can differ from the 92314 normal.