Frost dates for 89020Amargosa Valley, NV
The average last spring frost in Amargosa Valley is March 15 and the average first fall frost is November 13, giving a typical growing season of about 237 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 15
- Average first fall frost
- Nov 13
- Growing season
- 237 days
Safer after Apr 9 (1-in-10 risk)
Possible by Oct 29 (1-in-10 risk)
First frost typically in 18 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 17 · Apr 8 · Apr 24 | Oct 21 · Nov 3 · Nov 16 | 209 days | 100% |
| Frost / freeze (32°F) | Feb 21 · Mar 15 · Apr 9 | Oct 29 · Nov 13 · Nov 26 | 237 days | 100% |
| Hard freeze (28°F) | Jan 30 · Feb 23 · Mar 15 | Nov 8 · Nov 24 · Dec 10 | 272 days | 100% |
Planting calendar for Amargosa Valley
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 12 – Apr 20 |
| Tomatoes | Transplant outdoors | Mar 31 – Jul 24 |
| Peppers | Start seeds indoors | Feb 12 – Mar 15 |
| Peppers | Transplant outdoors | Apr 14 – May 15 |
| Eggplant | Start seeds indoors | Mar 1 – Mar 30 |
| Eggplant | Transplant outdoors | Apr 14 – May 15 |
| Cucumbers | Sow outdoors | Apr 14 – Aug 3 |
| Summer squash | Sow outdoors | Mar 31 – May 15 |
| Winter squash & pumpkins | Sow outdoors | Apr 14 – May 15 |
| Snap beans | Sow outdoors | Mar 31 – Aug 26 |
| Sweet corn | Sow outdoors | Mar 31 – Jul 24 |
| Watermelon & cantaloupe | Sow outdoors | Apr 14 – May 15 |
| Okra | Sow outdoors | Apr 7 – Apr 30 |
| Peas | Sow outdoors (spring) | Feb 12 – Mar 30 |
| Potatoes | Plant outdoors (spring) | Feb 12 – Apr 14 |
| Onions | Start seeds indoors (spring) | Jan 1 – Jan 28 |
| Onions | Transplant outdoors (spring) | Mar 1 – Mar 30 |
| Broccoli | Start seeds indoors (spring) | Jan 25 – Feb 28 |
| Broccoli | Transplant outdoors (spring) | Mar 1 – Mar 30 |
| Broccoli | Start seeds indoors (fall) | Jul 14 – Jul 24 |
| Broccoli | Transplant outdoors (fall) | Aug 13 – Aug 24 |
| Cabbage | Start seeds indoors (spring) | Jan 15 – Feb 12 |
| Cabbage | Transplant outdoors (spring) | Feb 12 – Mar 15 |
| Cabbage | Start seeds indoors (fall) | Jul 4 – Aug 3 |
| Cabbage | Transplant outdoors (fall) | Aug 3 – Sep 3 |
| Leaf lettuce | Sow outdoors (spring) | Feb 12 – Apr 30 |
| Leaf lettuce | Sow outdoors (fall) | Aug 3 – Sep 19 |
| Spinach | Sow outdoors (spring) | Feb 5 – Mar 21 |
| Spinach | Sow outdoors (fall) | Aug 20 – Sep 24 |
| Radishes | Sow outdoors (spring) | Feb 12 – Apr 4 |
| Radishes | Sow outdoors (fall) | Aug 3 – Oct 4 |
| Kale | Sow outdoors (spring) | Mar 1 – Mar 21 |
| Kale | Sow outdoors (fall) | Jul 27 – Sep 3 |
| Carrots | Sow outdoors (spring) | Mar 15 – Apr 30 |
| Carrots | Sow outdoors (fall) | Jul 4 – Aug 19 |
| Garlic | Plant outdoors (fall) | Nov 3 – Dec 4 |
Where these dates come from
ZIP code 89020 is matched to the NOAA station Amargosa Farms-Garey, NV, 8.6 km away, at 2,450 ft elevation (121 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Amargosa Farms-Garey, NV (used) | 2,450 ft | Mar 15 | Nov 13 |
| Death Valley Np, CA | -194 ft | Jan 1 | Dec 19 |
| Mercury Desert Rock Ap, NV | 3,230 ft | Mar 16 | Nov 17 |
| Mercury 3 Ssw, NV | 3,284 ft | Mar 10 | Nov 19 |
Frost dates near Amargosa Valley
- Beatty, NV 89003 · last Apr 12, first Nov 3
- Death Valley, CA 92328 · last Jan 1, first Dec 19
- Mercury, NV 89023 · last Mar 10, first Nov 19
- Pahrump, NV 89060 · last Mar 29, first Nov 3
- Shoshone, CA 92384 · last Mar 29, first Nov 3
- Indian Springs, NV 89018 · last Mar 16, first Nov 17
- Tecopa, CA 92389 · last Mar 29, first Nov 3
- Las Vegas, NV 89124 · last Mar 13, first Nov 15
Frequently asked questions
- When is the last frost in Amargosa Valley, NV?
- For ZIP code 89020, the average last spring frost (32°F) is March 15, based on NOAA 1991-2020 climate normals for the Amargosa Farms-Garey, NV weather station. There is a 1-in-10 chance of a frost after April 9.
- When is the first frost in Amargosa Valley, NV?
- The average first fall frost (32°F) is November 13. There is a 1-in-10 chance of frost by October 29, so tender plants are at risk from that point on.
- How long is the growing season in 89020?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 237 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.