When to plant in Winchester, NV
USDA Zone 9bWinchester, Nevada frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Winchester enjoys a long ~329-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 9b is warm enough that Winchester can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Winchester is now 9 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
LAS VEGAS MCCARRAN 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 Winchester’s own odds, recorded at LAS VEGAS MCCARRAN AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 4 | Feb 11 | Jan 19 | Nov 18 | Dec 3 | Dec 17 |
| 32°F | Feb 14 | Jan 20 | Dec 20 | Nov 28 | Dec 15 | Jan 7 |
| 28°F | Jan 29 | Dec 31 | Dec 10 | Dec 6 | Dec 26 | 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 Winchester, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 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.
Winchester planting FAQ
When is the last spring frost in Winchester, NV?
On average, the last spring frost in Winchester is around January 20 (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 Winchester, NV?
In Winchester, the first 32°F freeze of fall lands around December 15 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Winchester in?
Winchester is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Winchester?
There are roughly 329 frost-free days in Winchester (a long growing season), running from the average last frost around January 20 to the first fall frost near December 15.
When should I plant tomatoes in Winchester?
In Winchester, start tomato seeds indoors around November 25–December 9, then transplant seedlings outdoors around January 27 once the danger of frost has passed.
Never miss a window in Winchester
An email when it’s time to start seeds, transplant, and sow — timed to Winchester’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Paradise · 5 km
- Sunrise Manor · 9 km
- Whitney · 10 km
- Spring Valley · 12 km
- Las Vegas · 16 km
- Enterprise · 16 km
- Henderson · 17 km
- North Las Vegas · 18 km
Frost dates recorded at LAS VEGAS MCCARRAN AP, 8 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 Winchester, NV — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00023169. Retrieved from https://blissgarden.com/nevada/winchester.