Frost dates for 89001Alamo, NV
The average last spring frost in Alamo is May 4 and the average first fall frost is October 8, giving a typical growing season of about 156 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 4
- Average first fall frost
- Oct 8
- Growing season
- 156 days
Safer after May 27 (1-in-10 risk)
Possible by Sep 27 (1-in-10 risk)
Last frost typically in 184 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) | May 2 · May 22 · Jun 6 | Sep 18 · Oct 1 · Oct 11 | 131 days | 100% |
| Frost / freeze (32°F) | Apr 17 · May 4 · May 27 | Sep 27 · Oct 8 · Oct 19 | 156 days | 100% |
| Hard freeze (28°F) | Mar 31 · Apr 18 · May 7 | Oct 5 · Oct 17 · Oct 30 | 180 days | 100% |
Planting calendar for Alamo
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 | Apr 3 – Jun 9 |
| Tomatoes | Transplant outdoors | May 20 – Jun 18 |
| Peppers | Start seeds indoors | Apr 3 – May 4 |
| Peppers | Transplant outdoors | Jun 3 – Jul 4 |
| Eggplant | Start seeds indoors | Apr 20 – May 19 |
| Eggplant | Transplant outdoors | Jun 3 – Jul 4 |
| Cucumbers | Sow outdoors | Jun 3 – Jun 28 |
| Summer squash | Sow outdoors | May 20 – Jul 4 |
| Winter squash & pumpkins | Sow outdoors | Jun 3 – Jul 4 |
| Snap beans | Sow outdoors | May 20 – Jul 21 |
| Sweet corn | Sow outdoors | May 20 – Jun 18 |
| Watermelon & cantaloupe | Sow outdoors | Jun 3 – Jul 4 |
| Okra | Sow outdoors | May 27 – Jun 19 |
| Peas | Sow outdoors (spring) | Apr 3 – May 19 |
| Potatoes | Plant outdoors (spring) | Apr 3 – Jun 3 |
| Onions | Start seeds indoors (spring) | Feb 20 – Mar 19 |
| Onions | Transplant outdoors (spring) | Apr 20 – May 19 |
| Broccoli | Start seeds indoors (spring) | Mar 16 – Apr 19 |
| Broccoli | Transplant outdoors (spring) | Apr 20 – May 19 |
| Broccoli | Start seeds indoors (fall) | Jun 8 – Jun 18 |
| Broccoli | Transplant outdoors (fall) | Jul 8 – Jul 19 |
| Cabbage | Start seeds indoors (spring) | Mar 6 – Apr 3 |
| Cabbage | Transplant outdoors (spring) | Apr 3 – May 4 |
| Cabbage | Start seeds indoors (fall) | May 29 – Jun 28 |
| Cabbage | Transplant outdoors (fall) | Jun 28 – Jul 29 |
| Leaf lettuce | Sow outdoors (spring) | Apr 3 – Jun 19 |
| Leaf lettuce | Sow outdoors (fall) | Jun 28 – Aug 14 |
| Spinach | Sow outdoors (spring) | Mar 27 – May 10 |
| Spinach | Sow outdoors (fall) | Jul 15 – Aug 19 |
| Radishes | Sow outdoors (spring) | Apr 3 – May 24 |
| Radishes | Sow outdoors (fall) | Jun 28 – Aug 29 |
| Kale | Sow outdoors (spring) | Apr 20 – May 10 |
| Kale | Sow outdoors (fall) | Jun 21 – Jul 29 |
| Carrots | Sow outdoors (spring) | May 4 – Jun 19 |
| Carrots | Sow outdoors (fall) | May 29 – Jul 14 |
| Garlic | Plant outdoors (fall) | Sep 28 – Oct 29 |
Where these dates come from
ZIP code 89001 is matched to the NOAA station Rachel, NV, 52.6 km away, at 4,820 ft elevation (1,253 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Rachel, NV (used) | 4,820 ft | May 4 | Oct 8 |
| Pahranagat Wr, NV | 3,334 ft | Apr 3 | Oct 31 |
| Hiko, NV | 3,900 ft | Apr 20 | Oct 26 |
| Elgin, NV | 3,422 ft | Apr 11 | Nov 1 |
Frost dates near Alamo
- Hiko, NV 89017 · last Apr 20, first Oct 26
- Caliente, NV 89008 · last May 3, first Oct 9
- Indian Springs, NV 89018 · last Mar 16, first Nov 17
- Moapa, NV 89025 · last Jan 23, first Dec 13
- Mercury, NV 89023 · last Mar 10, first Nov 19
- Panaca, NV 89042 · last May 15, first Oct 4
- Las Vegas, NV 89124 · last Mar 13, first Nov 15
- Pioche, NV 89043 · last May 2, first Oct 17
Frequently asked questions
- When is the last frost in Alamo, NV?
- For ZIP code 89001, the average last spring frost (32°F) is May 4, based on NOAA 1991-2020 climate normals for the Rachel, NV weather station. There is a 1-in-10 chance of a frost after May 27.
- When is the first frost in Alamo, NV?
- The average first fall frost (32°F) is October 8. There is a 1-in-10 chance of frost by September 27, so tender plants are at risk from that point on.
- How long is the growing season in 89001?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 156 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.