When to plant in Las Vegas, NV
USDA Zone 9aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Las Vegas, Nevada — all computed from Las Vegas's nearest NOAA weather station.
A generous ~320-day season lets Las Vegas gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 9a is warm enough that Las Vegas can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Las Vegas is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
LAS VEGAS AIR TERMINAL · 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 Las Vegas’s own odds, recorded at LAS VEGAS AIR TERMINAL.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 9 | Feb 16 | Jan 23 | Nov 15 | Nov 29 | Dec 14 |
| 32°F | Feb 19 | Jan 24 | Dec 27 | Nov 24 | Dec 10 | Dec 29 |
| 28°F | Feb 3 | Jan 2 | Dec 10 | Dec 4 | Dec 25 | Jan 22 |
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 Las Vegas, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 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.
Las Vegas planting FAQ
When is the last spring frost in Las Vegas, NV?
On average, the last spring frost in Las Vegas is around January 24 (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 Las Vegas, NV?
In Las Vegas, the first 32°F freeze of fall lands around December 10 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Las Vegas in?
Las Vegas is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Las Vegas?
There are roughly 320 frost-free days in Las Vegas (a long growing season), running from the average last frost around January 24 to the first fall frost near December 10.
When should I plant tomatoes in Las Vegas?
In Las Vegas, start tomato seeds indoors around November 29–December 13, then transplant seedlings outdoors around January 31 once the danger of frost has passed.
Never miss a window in Las Vegas
An email when it’s time to start seeds, transplant, and sow — timed to Las Vegas’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Summerlin South · 14 km
- Spring Valley · 15 km
- Winchester · 16 km
- North Las Vegas · 17 km
- Paradise · 20 km
- Sunrise Manor · 20 km
- Whitney · 25 km
- Enterprise · 25 km
Frost dates recorded at LAS VEGAS AIR TERMINAL, 7 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 Las Vegas, NV — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00053123. Retrieved from https://blissgarden.com/nevada/las-vegas.