When to plant in Rio Linda, CA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Rio Linda, California — all computed from Rio Linda's nearest NOAA weather station.
A generous ~275-day season lets Rio Linda gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 9b is warm enough that Rio Linda can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
SACRAMENTO METRO AP · 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 Rio Linda’s own odds, recorded at SACRAMENTO METRO AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 22 | Apr 1 | Mar 2 | Oct 24 | Nov 10 | Nov 25 |
| 32°F | Apr 1 | Feb 22 | Jan 10 | Nov 9 | Nov 24 | Dec 21 |
| 28°F | Feb 19 | Jan 17 | Dec 17 | Nov 21 | Dec 10 | Jan 18 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Rio Linda, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 21 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.
Rio Linda planting FAQ
When is the last spring frost in Rio Linda, CA?
Plan for the last spring frost in Rio Linda around February 22 (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 Rio Linda, CA?
In Rio Linda, the first 32°F freeze of fall lands around November 24 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Rio Linda in?
Rio Linda is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Rio Linda?
There are roughly 275 frost-free days in Rio Linda (a long growing season), running from the average last frost around February 22 to the first fall frost near November 24.
When should I plant tomatoes in Rio Linda?
In Rio Linda, start tomato seeds indoors around December 28–January 11, then transplant seedlings outdoors around March 1 once the danger of frost has passed.
Never miss a window in Rio Linda
An email when it’s time to start seeds, transplant, and sow — timed to Rio Linda’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- North Highlands · 6 km
- Antelope · 8 km
- Foothill Farms · 8 km
- Arden-Arcade · 11 km
- Carmichael · 12 km
- Citrus Heights · 13 km
- Sacramento · 14 km
- Roseville · 14 km
Frost dates recorded at SACRAMENTO METRO AP, 13 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 Rio Linda, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00093225. Retrieved from https://blissgarden.com/california/rio-linda.