Marysville, CA 95918 Frost Dates
Frost dates for Marysville, CA, ZIP 95918
The last spring frost here typically falls around 01/15, about 140 days from today. The first fall frost typically arrives around 12/12, about 333 frost-free days later.
The USDA Plant Hardiness Zone Map puts Marysville in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 9b around Marysville has about 15 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.
The actual range around Marysville's last frost
01/15 is the middle of 30 years of NOAA records, not a promise. Plant by 02/18 and you're betting against frost in roughly 9 years out of 10. 12/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Marysville compares
Marysville's growing season runs about 333 days, ranking 2,841 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,290 of 2,555.
Learn more
zone vs. frost date explains why Zone 9b and Marysville's frost date answer different questions, and the frost range explains how to read the range around Marysville's dates instead of trusting one.