When to plant in Marysville, CA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Marysville, California — all computed from Marysville's nearest NOAA weather station.
With about 331 frost-free days, Marysville supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. In zone 9b, frost is a minor factor for Marysville — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Marysville is now 9 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
MARYSVILLE · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Marysville’s own odds, recorded at MARYSVILLE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 23 | Feb 21 | Jan 18 | Nov 13 | Nov 28 | Dec 19 |
| 32°F | Feb 18 | Jan 15 | Dec 18 | Nov 24 | Dec 12 | Jan 9 |
| 28°F | Jan 24 | Dec 31 | Dec 9 | Dec 4 | Dec 24 | Jan 16 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Marysville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 38 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Marysville planting FAQ
When is the last spring frost in Marysville, CA?
Plan for the last spring frost in Marysville around January 15 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Marysville, CA?
In Marysville, the first 32°F freeze of fall lands around December 12 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Marysville in?
Marysville is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Marysville?
Marysville has about 331 frost-free days — a long growing season — between the average last spring frost (January 15) and first fall frost (December 12).
When should I plant tomatoes in Marysville?
For Marysville, sow tomatoes indoors about November 20–December 4 and move the seedlings out around January 22, after the last spring frost.
Never miss a window in Marysville
An email when it’s time to start seeds, transplant, and sow — timed to Marysville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Linda · 5 km
- Yuba City · 6 km
- Olivehurst · 8 km
- Oroville · 38 km
- Lincoln · 40 km
- Grass Valley · 46 km
- Rocklin · 48 km
- Roseville · 48 km
Frost dates recorded at MARYSVILLE, 1 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Marysville, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00045385. Retrieved from https://blissgarden.com/california/marysville.