When to plant in Spring Valley, NV
USDA Zone 9aSpring Valley, Nevada frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Spring Valley enjoys a long ~304-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 9a is warm enough that Spring Valley can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Spring Valley is now 9 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
LAS VEGAS WFO · 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 Spring Valley’s own odds, recorded at LAS VEGAS WFO.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 12 | Feb 24 | Feb 3 | Nov 9 | Nov 23 | Dec 7 |
| 32°F | Feb 27 | Feb 4 | Jan 10 | Nov 19 | Dec 5 | Dec 23 |
| 28°F | Feb 11 | Jan 13 | Dec 17 | Nov 29 | Dec 20 | Jan 17 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 20Full-year planting calendar
Each bar is the exact window to take a planting action in Spring Valley, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
Spring Valley planting FAQ
When is the last spring frost in Spring Valley, NV?
Spring Valley's average last spring frost falls near February 4 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Spring Valley, NV?
In Spring Valley, the first 32°F freeze of fall lands around December 5 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Spring Valley in?
Spring Valley is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Spring Valley?
There are roughly 304 frost-free days in Spring Valley (a long growing season), running from the average last frost around February 4 to the first fall frost near December 5.
When should I plant tomatoes in Spring Valley?
In Spring Valley, start tomato seeds indoors around December 10–December 24, then transplant seedlings outdoors around February 11 once the danger of frost has passed.
Never miss a window in Spring Valley
An email when it’s time to start seeds, transplant, and sow — timed to Spring Valley’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Summerlin South · 7 km
- Enterprise · 10 km
- Paradise · 12 km
- Winchester · 12 km
- Las Vegas · 15 km
- Whitney · 20 km
- Sunrise Manor · 21 km
- Henderson · 23 km
Frost dates recorded at LAS VEGAS WFO, 9 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 Spring Valley, NV — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00264439. Retrieved from https://blissgarden.com/nevada/spring-valley.