Frost dates for 89143Las Vegas, NV
The average last spring frost in Las Vegas is March 22 and the average first fall frost is November 7, giving a typical growing season of about 229 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 22
- Average first fall frost
- Nov 7
- Growing season
- 229 days
Safer after Apr 13 (1-in-10 risk)
Possible by Oct 21 (1-in-10 risk)
First frost typically in 21 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Mar 21 · Apr 10 · May 2 | Oct 13 · Oct 28 · Nov 11 | 201 days | 100% |
| Frost / freeze (32°F) | Feb 28 · Mar 22 · Apr 13 | Oct 21 · Nov 7 · Nov 22 | 229 days | 100% |
| Hard freeze (28°F) | Feb 7 · Mar 1 · Mar 25 | Nov 3 · Nov 19 · Dec 6 | 264 days | 100% |
Planting calendar for Las Vegas
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Feb 19 – Apr 27 |
| Tomatoes | Transplant outdoors | Apr 7 – Jul 18 |
| Peppers | Start seeds indoors | Feb 19 – Mar 22 |
| Peppers | Transplant outdoors | Apr 21 – May 22 |
| Eggplant | Start seeds indoors | Mar 8 – Apr 6 |
| Eggplant | Transplant outdoors | Apr 21 – May 22 |
| Cucumbers | Sow outdoors | Apr 21 – Jul 28 |
| Summer squash | Sow outdoors | Apr 7 – May 22 |
| Winter squash & pumpkins | Sow outdoors | Apr 21 – May 22 |
| Snap beans | Sow outdoors | Apr 7 – Aug 20 |
| Sweet corn | Sow outdoors | Apr 7 – Jul 18 |
| Watermelon & cantaloupe | Sow outdoors | Apr 21 – May 22 |
| Okra | Sow outdoors | Apr 14 – May 7 |
| Peas | Sow outdoors (spring) | Feb 19 – Apr 6 |
| Potatoes | Plant outdoors (spring) | Feb 19 – Apr 21 |
| Onions | Start seeds indoors (spring) | Jan 8 – Feb 4 |
| Onions | Transplant outdoors (spring) | Mar 8 – Apr 6 |
| Broccoli | Start seeds indoors (spring) | Feb 1 – Mar 7 |
| Broccoli | Transplant outdoors (spring) | Mar 8 – Apr 6 |
| Broccoli | Start seeds indoors (fall) | Jul 8 – Jul 18 |
| Broccoli | Transplant outdoors (fall) | Aug 7 – Aug 18 |
| Cabbage | Start seeds indoors (spring) | Jan 22 – Feb 19 |
| Cabbage | Transplant outdoors (spring) | Feb 19 – Mar 22 |
| Cabbage | Start seeds indoors (fall) | Jun 28 – Jul 28 |
| Cabbage | Transplant outdoors (fall) | Jul 28 – Aug 28 |
| Leaf lettuce | Sow outdoors (spring) | Feb 19 – May 7 |
| Leaf lettuce | Sow outdoors (fall) | Jul 28 – Sep 13 |
| Spinach | Sow outdoors (spring) | Feb 12 – Mar 28 |
| Spinach | Sow outdoors (fall) | Aug 14 – Sep 18 |
| Radishes | Sow outdoors (spring) | Feb 19 – Apr 11 |
| Radishes | Sow outdoors (fall) | Jul 28 – Sep 28 |
| Kale | Sow outdoors (spring) | Mar 8 – Mar 28 |
| Kale | Sow outdoors (fall) | Jul 21 – Aug 28 |
| Carrots | Sow outdoors (spring) | Mar 22 – May 7 |
| Carrots | Sow outdoors (fall) | Jun 28 – Aug 13 |
| Garlic | Plant outdoors (fall) | Oct 28 – Nov 28 |
Where these dates come from
ZIP code 89143 is matched to the NOAA station Desert Nwr, NV, 14.2 km away, at 2,914 ft elevation (276 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Desert Nwr, NV (used) | 2,914 ft | Mar 22 | Nov 7 |
| Las Vegas Air Terminal, NV | 2,203 ft | Jan 24 | Dec 10 |
| N Las Vegas, NV | 1,898 ft | Feb 1 | Dec 8 |
| Las Vegas Mccarran Ap, NV | 2,131 ft | Jan 20 | Dec 15 |
Frost dates near Las Vegas
- Las Vegas, NV 89165 · last Mar 22, first Nov 7
- North Las Vegas, NV 89085 · last Jan 24, first Dec 10
- The Lakes, NV 89163 · last Feb 1, first Dec 8
- Nellis Afb, NV 89191 · last Feb 1, first Dec 8
- Blue Diamond, NV 89004 · last Mar 13, first Nov 15
- Henderson, NV 89014 · last Jan 20, first Dec 15
- Coyote Springs, NV 89037 · last Feb 1, first Dec 8
- Indian Springs, NV 89018 · last Mar 16, first Nov 17
Frequently asked questions
- When is the last frost in Las Vegas, NV?
- For ZIP code 89143, the average last spring frost (32°F) is March 22, based on NOAA 1991-2020 climate normals for the Desert Nwr, NV weather station. There is a 1-in-10 chance of a frost after April 13.
- When is the first frost in Las Vegas, NV?
- The average first fall frost (32°F) is November 7. There is a 1-in-10 chance of frost by October 21, so tender plants are at risk from that point on.
- How long is the growing season in 89143?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 229 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.