Last spring frost
May 9
Frost Dates for Valmy, NV
First fall frost
Sep 29
Growing season
141 days
Hardiness zone
6b
In an average year around Valmy, NV, the last spring frost (32°F) is about May 9 and the first fall frost is about Sep 29, giving roughly a 141-day growing season. To be safe most years, wait until Apr 23 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Jun 15 | May 30 | May 10 |
| Freeze (32°F) | May 31 | May 9 | Apr 23 |
| Hard (28°F) | May 12 | Apr 23 | Apr 6 |
| Severe (24°F) | Apr 28 | Apr 7 | Mar 15 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Jun 15 | Jun 9 | Jun 5 | Jun 2 | May 30 | May 25 | May 20 | May 15 | May 10 |
| 32°F | May 31 | May 23 | May 17 | May 12 | May 9 | May 6 | May 2 | Apr 28 | Apr 23 |
| 28°F | May 12 | May 5 | Apr 30 | Apr 26 | Apr 23 | Apr 20 | Apr 16 | Apr 12 | Apr 6 |
| 24°F | Apr 28 | Apr 21 | Apr 16 | Apr 11 | Apr 7 | Apr 3 | Mar 29 | Mar 24 | Mar 15 |
| 20°F | Apr 12 | Apr 3 | Mar 27 | Mar 19 | Mar 13 | Mar 7 | Mar 2 | Feb 25 | Feb 18 |
| 16°F | Mar 17 | Mar 7 | Feb 28 | Feb 25 | Feb 21 | Feb 17 | Feb 11 | Feb 7 | Feb 1 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Sep 5 | Sep 19 | Oct 1 |
| Freeze (32°F) | Sep 15 | Sep 29 | Oct 11 |
| Hard (28°F) | Sep 26 | Oct 9 | Oct 24 |
| Severe (24°F) | Oct 6 | Oct 20 | Nov 5 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 5 | Sep 10 | Sep 14 | Sep 17 | Sep 19 | Sep 22 | Sep 24 | Sep 27 | Oct 1 |
| 32°F | Sep 15 | Sep 19 | Sep 23 | Sep 26 | Sep 29 | Oct 1 | Oct 4 | Oct 7 | Oct 11 |
| 28°F | Sep 26 | Oct 1 | Oct 3 | Oct 6 | Oct 9 | Oct 12 | Oct 15 | Oct 19 | Oct 24 |
| 24°F | Oct 6 | Oct 11 | Oct 14 | Oct 17 | Oct 20 | Oct 24 | Oct 27 | Nov 1 | Nov 5 |
| 20°F | Oct 15 | Oct 20 | Oct 24 | Oct 29 | Nov 1 | Nov 4 | Nov 9 | Nov 13 | Nov 20 |
| 16°F | Oct 24 | Oct 31 | Nov 4 | Nov 9 | Nov 13 | Nov 17 | Nov 23 | Nov 29 | Dec 4 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Battle Mountain 4Se, Nv, about 18.1 miles away@if(!empty($station['elevation_ft'])), at 4,505 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Valmy, NV?
On average, the last spring frost (32°F) around Valmy, NV is about May 9. In cooler years it can run later, so for a safer bet many gardeners wait until Apr 23.
When is the first frost in the fall?
The first fall frost around Valmy, NV typically arrives about Sep 29. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around May 9 on average, or Apr 23 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 141 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 89438 Planting calendar → Nevada frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026