When to plant in Susanville, CA
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Susanville, California — all computed from Susanville's nearest NOAA weather station.
Zone 7a means many perennials and even some tender shrubs overwinter in Susanville, while your frost dates still decide when annuals go out.
Frost probability
SUSANVILLE 2SW · 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 Susanville’s own odds, recorded at SUSANVILLE 2SW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 18 | Jun 4 | May 18 | Sep 12 | Sep 26 | Oct 8 |
| 32°F | Jun 5 | May 16 | Apr 29 | Sep 25 | Oct 8 | Oct 22 |
| 28°F | May 17 | Apr 26 | Apr 7 | Oct 5 | Oct 21 | Nov 3 |
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 Susanville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
2 within 49 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.
Susanville planting FAQ
When is the last spring frost in Susanville, CA?
On average, the last spring frost in Susanville is around May 16 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Susanville, CA?
In Susanville, the first 32°F freeze of fall lands around October 8 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Susanville in?
Susanville is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Susanville?
There are roughly 145 frost-free days in Susanville (a short growing season), running from the average last frost around May 16 to the first fall frost near October 8.
When should I plant tomatoes in Susanville?
In Susanville, start tomato seeds indoors around March 21–April 4, then transplant seedlings outdoors around May 23 once the danger of frost has passed.
Never miss a window in Susanville
An email when it’s time to start seeds, transplant, and sow — timed to Susanville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Cold Springs · 99 km
- Sun Valley · 117 km
- Reno · 119 km
- Spanish Springs · 119 km
- Sparks · 123 km
- Chico · 126 km
- Truckee · 126 km
- Oroville · 131 km
Frost dates recorded at SUSANVILLE 2SW, 3 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 Susanville, CA — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00048702. Retrieved from https://blissgarden.com/california/susanville.