Frost dates for 89438Valmy, NV
The average last spring frost in Valmy is May 9 and the average first fall frost is September 29, giving a typical growing season of about 141 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 9
- Average first fall frost
- Sep 29
- Growing season
- 141 days
Safer after May 31 (1-in-10 risk)
Possible by Sep 15 (1-in-10 risk)
Last frost typically in 195 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 10 · May 30 · Jun 15 | Sep 5 · Sep 19 · Oct 1 | 114 days | 100% |
| Frost / freeze (32°F) | Apr 23 · May 9 · May 31 | Sep 15 · Sep 29 · Oct 11 | 141 days | 100% |
| Hard freeze (28°F) | Apr 6 · Apr 23 · May 12 | Sep 26 · Oct 9 · Oct 24 | 168 days | 100% |
Planting calendar for Valmy
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 8 – Jun 14 |
| Tomatoes | Transplant outdoors | May 25 – Jun 9 |
| Peppers | Start seeds indoors | Apr 8 – May 9 |
| Peppers | Transplant outdoors | Jun 8 – Jul 9 |
| Eggplant | Start seeds indoors | Apr 25 – May 24 |
| Eggplant | Transplant outdoors | Jun 8 – Jul 9 |
| Cucumbers | Sow outdoors | Jun 8 – Jun 19 |
| Summer squash | Sow outdoors | May 25 – Jul 9 |
| Winter squash & pumpkins | Sow outdoors | Jun 8 – Jul 9 |
| Snap beans | Sow outdoors | May 25 – Jul 12 |
| Sweet corn | Sow outdoors | May 25 – Jun 9 |
| Watermelon & cantaloupe | Sow outdoors | Jun 8 – Jul 9 |
| Okra | Sow outdoors | Jun 1 – Jun 24 |
| Peas | Sow outdoors (spring) | Apr 8 – May 24 |
| Potatoes | Plant outdoors (spring) | Apr 8 – Jun 8 |
| Onions | Start seeds indoors (spring) | Feb 25 – Mar 24 |
| Onions | Transplant outdoors (spring) | Apr 25 – May 24 |
| Broccoli | Start seeds indoors (spring) | Mar 21 – Apr 24 |
| Broccoli | Transplant outdoors (spring) | Apr 25 – May 24 |
| Broccoli | Start seeds indoors (fall) | May 30 – Jun 9 |
| Broccoli | Transplant outdoors (fall) | Jun 29 – Jul 10 |
| Cabbage | Start seeds indoors (spring) | Mar 11 – Apr 8 |
| Cabbage | Transplant outdoors (spring) | Apr 8 – May 9 |
| Cabbage | Start seeds indoors (fall) | May 20 – Jun 19 |
| Cabbage | Transplant outdoors (fall) | Jun 19 – Jul 20 |
| Leaf lettuce | Sow outdoors (spring) | Apr 8 – Jun 24 |
| Leaf lettuce | Sow outdoors (fall) | Jun 19 – Aug 5 |
| Spinach | Sow outdoors (spring) | Apr 1 – May 15 |
| Spinach | Sow outdoors (fall) | Jul 6 – Aug 10 |
| Radishes | Sow outdoors (spring) | Apr 8 – May 29 |
| Radishes | Sow outdoors (fall) | Jun 19 – Aug 20 |
| Kale | Sow outdoors (spring) | Apr 25 – May 15 |
| Kale | Sow outdoors (fall) | Jun 12 – Jul 20 |
| Carrots | Sow outdoors (spring) | May 9 – Jun 24 |
| Carrots | Sow outdoors (fall) | May 20 – Jul 5 |
| Garlic | Plant outdoors (fall) | Sep 19 – Oct 20 |
Where these dates come from
ZIP code 89438 is matched to the NOAA station Battle Mountain 4Se, NV, 28.2 km away, at 4,505 ft elevation (6 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Battle Mountain 4Se, NV (used) | 4,505 ft | May 9 | Sep 29 |
| Golconda, NV | 4,394 ft | May 16 | Oct 1 |
| Winnemucca 3Ssw, NV | 4,355 ft | May 23 | Sep 29 |
| Winnemucca Muni Ap, NV | 4,296 ft | May 31 | Sep 17 |
Frost dates near Valmy
- Battle Mountain, NV 89820 · last May 9, first Sep 29
- Golconda, NV 89414 · last May 16, first Oct 1
- Winnemucca, NV 89445 · last May 23, first Sep 29
- Crescent Valley, NV 89821 · last Jun 2, first Sep 17
- Imlay, NV 89418 · last May 17, first Sep 27
- Carlin, NV 89822 · last May 29, first Sep 18
- Paradise Valley, NV 89426 · last Jun 5, first Sep 13
- Tuscarora, NV 89834 · last Jun 4, first Sep 24
Frequently asked questions
- When is the last frost in Valmy, NV?
- For ZIP code 89438, the average last spring frost (32°F) is May 9, based on NOAA 1991-2020 climate normals for the Battle Mountain 4Se, NV weather station. There is a 1-in-10 chance of a frost after May 31.
- When is the first frost in Valmy, NV?
- The average first fall frost (32°F) is September 29. There is a 1-in-10 chance of frost by September 15, so tender plants are at risk from that point on.
- How long is the growing season in 89438?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 141 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.