Frost dates for 89049Tonopah, NV
The average last spring frost in Tonopah is April 30 and the average first fall frost is October 22, giving a typical growing season of about 173 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 30
- Average first fall frost
- Oct 22
- Growing season
- 173 days
Safer after May 22 (1-in-10 risk)
Possible by Oct 5 (1-in-10 risk)
Last frost typically in 186 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) | Apr 27 · May 15 · Jun 2 | Sep 28 · Oct 12 · Oct 28 | 149 days | 100% |
| Frost / freeze (32°F) | Apr 14 · Apr 30 · May 22 | Oct 5 · Oct 22 · Nov 8 | 173 days | 100% |
| Hard freeze (28°F) | Mar 26 · Apr 16 · May 7 | Oct 16 · Nov 4 · Nov 19 | 201 days | 100% |
Planting calendar for Tonopah
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 | Mar 30 – Jun 5 |
| Tomatoes | Transplant outdoors | May 16 – Jul 2 |
| Peppers | Start seeds indoors | Mar 30 – Apr 30 |
| Peppers | Transplant outdoors | May 30 – Jun 30 |
| Eggplant | Start seeds indoors | Apr 16 – May 15 |
| Eggplant | Transplant outdoors | May 30 – Jun 30 |
| Cucumbers | Sow outdoors | May 30 – Jul 12 |
| Summer squash | Sow outdoors | May 16 – Jun 30 |
| Winter squash & pumpkins | Sow outdoors | May 30 – Jun 30 |
| Snap beans | Sow outdoors | May 16 – Aug 4 |
| Sweet corn | Sow outdoors | May 16 – Jul 2 |
| Watermelon & cantaloupe | Sow outdoors | May 30 – Jun 30 |
| Okra | Sow outdoors | May 23 – Jun 15 |
| Peas | Sow outdoors (spring) | Mar 30 – May 15 |
| Potatoes | Plant outdoors (spring) | Mar 30 – May 30 |
| Onions | Start seeds indoors (spring) | Feb 16 – Mar 15 |
| Onions | Transplant outdoors (spring) | Apr 16 – May 15 |
| Broccoli | Start seeds indoors (spring) | Mar 12 – Apr 15 |
| Broccoli | Transplant outdoors (spring) | Apr 16 – May 15 |
| Broccoli | Start seeds indoors (fall) | Jun 22 – Jul 2 |
| Broccoli | Transplant outdoors (fall) | Jul 22 – Aug 2 |
| Cabbage | Start seeds indoors (spring) | Mar 2 – Mar 30 |
| Cabbage | Transplant outdoors (spring) | Mar 30 – Apr 30 |
| Cabbage | Start seeds indoors (fall) | Jun 12 – Jul 12 |
| Cabbage | Transplant outdoors (fall) | Jul 12 – Aug 12 |
| Leaf lettuce | Sow outdoors (spring) | Mar 30 – Jun 15 |
| Leaf lettuce | Sow outdoors (fall) | Jul 12 – Aug 28 |
| Spinach | Sow outdoors (spring) | Mar 23 – May 6 |
| Spinach | Sow outdoors (fall) | Jul 29 – Sep 2 |
| Radishes | Sow outdoors (spring) | Mar 30 – May 20 |
| Radishes | Sow outdoors (fall) | Jul 12 – Sep 12 |
| Kale | Sow outdoors (spring) | Apr 16 – May 6 |
| Kale | Sow outdoors (fall) | Jul 5 – Aug 12 |
| Carrots | Sow outdoors (spring) | Apr 30 – Jun 15 |
| Carrots | Sow outdoors (fall) | Jun 12 – Jul 28 |
| Garlic | Plant outdoors (fall) | Oct 12 – Nov 12 |
Where these dates come from
ZIP code 89049 is matched to the NOAA station Tonopah, NV, 0.5 km away, at 6,010 ft elevation (33 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Tonopah, NV (used) | 6,010 ft | Apr 30 | Oct 22 |
| Tonopah, NV | 5,395 ft | Apr 30 | Oct 18 |
| Goldfield, NV | 5,690 ft | Apr 27 | Oct 22 |
| Silverpeak, NV | 4,274 ft | Apr 23 | Oct 16 |
Frost dates near Tonopah
- Goldfield, NV 89013 · last Apr 27, first Oct 22
- Manhattan, NV 89022 · last May 24, first Sep 28
- Silverpeak, NV 89047 · last Jun 10, first Sep 17
- Round Mountain, NV 89045 · last May 24, first Sep 28
- Dyer, NV 89010 · last May 9, first Oct 4
- Mina, NV 89422 · last Apr 14, first Oct 24
- Luning, NV 89420 · last Apr 14, first Oct 24
- Gabbs, NV 89409 · last May 1, first Oct 22
Frequently asked questions
- When is the last frost in Tonopah, NV?
- For ZIP code 89049, the average last spring frost (32°F) is April 30, based on NOAA 1991-2020 climate normals for the Tonopah, NV weather station. There is a 1-in-10 chance of a frost after May 22.
- When is the first frost in Tonopah, NV?
- The average first fall frost (32°F) is October 22. There is a 1-in-10 chance of frost by October 5, so tender plants are at risk from that point on.
- How long is the growing season in 89049?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 173 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.