Frost dates · USDA zone 9a
Frost dates for Las Vegas, NV
Las Vegas, NV sees its last 32 °F night of spring around January 24 and its first of fall around December 10 — a 323-day freeze-free season in a typical year.
Pick a sauce; the Plan Builder runs this station's dates and hands back the calendar, plant count and gear list.
Freeze odds, by date
| Odds | Last spring freeze after | First fall freeze before |
|---|---|---|
| 9 years in 10 | Dec 27 (prior winter) | Dec 29 |
| Median — 1 year in 2 | Jan 24 | Dec 10 |
| 1 year in 10 | Feb 19 | Nov 24 |
The top row is the risky edge: in 9 years of 10 a spring freeze still comes after it, so tender transplants set out then need cover. The bottom row is the cautious date — only 1 year in 10 freezes after it — and the one to plan uncovered tender transplants against. Freeze-free season: 323 days median, at least 289 in 9 years of 10, at least 351 days in 1 year of 10. NOAA ranks season length year by year, so it is not the gap between two rows above. A hard freeze (28 °F) has a median last date of Jan 2 and first of Dec 25.
Las Vegas planting calendar, 2027
Every row runs from the median last frost (Jan 24) and median first frost (Dec 10) above, using each cultivar's days to maturity. Same engine as the Plan Builder.
| Crop | Start indoors | Transplant / plant | First harvest | Days |
|---|---|---|---|---|
| Hardneck GarlicSiberian (porcelain hardneck) | — | Oct 15prior fall | Jun 12 | 240 from sow |
| Spanish OnionYellow Sweet Spanish (long-day) | Nov 1 | Dec 27 | Apr 16 | 110 from transplant |
| Mustard greensGarnet Giant (Brassica juncea) | Direct sow | Jan 24 | Feb 23 | 30 from sow |
| CilantroSlow Bolt (Coriandrum sativum) | Jan 10 | Jan 10 | Feb 24 | 45 from sow |
| Genovese BasilGenovese | Dec 27 | Feb 7 | Apr 8 | 60 from transplant |
| CayenneLong Slim Cayenne (Capsicum annuum) | Nov 29 | Jan 31 | Apr 16 | 75 from transplant |
| HabaneroOrange Habanero (Capsicum chinense) | Nov 15 | Feb 7 | May 13 | 95 from transplant |
| JalapeñoEarly Jalapeño (Capsicum annuum) | Nov 29 | Jan 31 | Apr 16 | 75 from transplant |
| Marconi Red PepperMarconi Red (Capsicum annuum) | Nov 29 | Jan 31 | Apr 21 | 80 from transplant |
| SerranoSerrano Tampiqueño (Capsicum annuum) | Nov 29 | Jan 31 | Apr 21 | 80 from transplant |
| Nantes CarrotScarlet Nantes | Jan 10 | Jan 10 | Mar 21 | 70 from sow |
| TomatilloToma Verde | Dec 13 | Jan 31 | Apr 11 | 70 from transplant |
| Roma TomatoRoma VF (determinate paste) | Dec 13 | Jan 31 | Apr 16 | 75 from transplant |
| San Marzano TomatoSan Marzano (indeterminate paste) | Dec 13 | Jan 31 | Apr 21 | 80 from transplant |
Tight means first harvest lands within two weeks of the median first fall frost: start that crop indoors on time or cover it in fall.
What sauce can Las Vegas grow?
Each sauce, scheduled for a Las Vegas container garden: when the first seeds go in and when enough fruit has ripened for one batch.
Las Vegas frost questions
When is the last frost in Las Vegas, NV?
The median last 32 °F freeze at LAS VEGAS AIR TERMINAL, NV is January 24: half of years see a later one. One year in ten, a freeze still comes after February 19; nine years in ten, it comes after December 27 (prior winter). Source: NOAA NCEI 1991–2020 U.S. Climate Normals.
When is the first frost in Las Vegas, NV?
The median first 32 °F freeze of fall is December 10. One year in ten it arrives before November 24; nine years in ten, before December 29.
How long is the growing season in Las Vegas, NV?
323 days between the last spring and first fall 32 °F freeze in a median year. Nine years in ten the season runs at least 289 days; one year in ten, at least 351 days.
What growing zone is Las Vegas, NV?
USDA hardiness zone 9a, per the 2023 USDA Plant Hardiness Zone Map for ZIP 89129. A zone describes the coldest winter night, not when frost ends, so it is the wrong number for a planting calendar — the frost dates on this page are the right one.
When should I plant tomatoes in Las Vegas, NV?
Start Roma VF (determinate paste) seeds indoors around Dec 13 and transplant around Jan 31, 1 week after the median last frost. To cut the freeze risk to one year in ten, wait for Feb 19. First ripe fruit lands around Apr 16.
When should I plant peppers in Las Vegas, NV?
Sow jalapeño indoors on a heat mat around Nov 29; transplant no earlier than Jan 31, and wait past it until nights hold above 50 °F — that can run weeks later. First green pods around Apr 16.
Nearby in Nevada
- North Las Vegaslast frost Feb 1
- Hendersonlast frost Jan 20
- Carsonlast frost May 4
- Sparkslast frost May 1
- Renolast frost Apr 28
All Nevada frost dates → · How frost-date math drives a sowing calendar →