Amador City, CA 95699 Frost Dates
Frost dates for Amador City, CA, ZIP 95699
Around 01/22 is the usual last spring frost, about 147 days away. The first fall frost typically arrives around 12/17, about 332 frost-free days later.
Amador City sits in USDA Zone 9b (25 to 30°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 9b around Amador City has about 16 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.
Why 01/22 isn't a guarantee
01/22 is the middle of 30 years of NOAA records, not a promise. Plant by 03/01 and you're betting against frost in roughly 9 years out of 10. 12/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Amador City compares
Amador City's growing season runs about 332 days, ranking 2,910 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,307 of 2,555.
Learn more
zone vs. frost date explains why Zone 9b and Amador City's frost date answer different questions, and the frost range explains how to read the range around Amador City's dates instead of trusting one.