Last spring frost
Mar 13
Frost Dates for Blue Diamond, NV
First fall frost
Nov 15
Growing season
244 days
Hardiness zone
8b
In an average year around Blue Diamond, NV, the last spring frost (32°F) is about Mar 13 and the first fall frost is about Nov 15, giving roughly a 244-day growing season. To be safe most years, wait until Feb 20 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) | Apr 25 | Apr 6 | Mar 11 |
| Freeze (32°F) | Apr 11 | Mar 13 | Feb 20 |
| Hard (28°F) | Mar 19 | Feb 21 | Jan 29 |
| Severe (24°F) | Feb 26 | Feb 1 | Dec 28 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 25 | Apr 20 | Apr 14 | Apr 10 | Apr 6 | Apr 1 | Mar 28 | Mar 20 | Mar 11 |
| 32°F | Apr 11 | Apr 4 | Mar 29 | Mar 21 | Mar 13 | Mar 7 | Mar 2 | Feb 27 | Feb 20 |
| 28°F | Mar 19 | Mar 8 | Mar 1 | Feb 26 | Feb 21 | Feb 17 | Feb 11 | Feb 5 | Jan 29 |
| 24°F | Feb 26 | Feb 17 | Feb 10 | Feb 5 | Feb 1 | Jan 26 | Jan 17 | Jan 9 | Dec 28 |
| 20°F | Feb 9 | Feb 2 | Jan 28 | Jan 18 | Jan 12 | Jan 4 | Dec 30 | Dec 18 | Dec 8 |
| 16°F | Jan 30 | Jan 22 | Jan 17 | Jan 13 | Jan 9 | Jan 3 | Dec 29 | Dec 18 | Dec 10 |
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) | Oct 22 | Nov 5 | Nov 19 |
| Freeze (32°F) | Oct 31 | Nov 15 | Nov 30 |
| Hard (28°F) | Nov 9 | Nov 27 | Dec 15 |
| Severe (24°F) | Nov 22 | Dec 11 | Jan 10 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 22 | Oct 27 | Oct 30 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 14 | Nov 19 |
| 32°F | Oct 31 | Nov 5 | Nov 9 | Nov 12 | Nov 15 | Nov 18 | Nov 21 | Nov 25 | Nov 30 |
| 28°F | Nov 9 | Nov 16 | Nov 19 | Nov 23 | Nov 27 | Dec 1 | Dec 5 | Dec 9 | Dec 15 |
| 24°F | Nov 22 | Nov 28 | Dec 2 | Dec 7 | Dec 11 | Dec 16 | Dec 23 | Dec 30 | Jan 10 |
| 20°F | Dec 1 | Dec 7 | Dec 13 | Dec 20 | Dec 27 | Jan 1 | Jan 6 | Jan 17 | Jan 31 |
| 16°F | Dec 8 | Dec 14 | Dec 21 | Dec 31 | Jan 3 | Jan 8 | Jan 13 | Jan 21 | Jan 28 |
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: Red Rock Canyon - Spg Mt Rch S, Nv, about 3.2 miles away@if(!empty($station['elevation_ft'])), at 3,780 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 Blue Diamond, NV?
On average, the last spring frost (32°F) around Blue Diamond, NV is about Mar 13. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 20.
When is the first frost in the fall?
The first fall frost around Blue Diamond, NV typically arrives about Nov 15. 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 Mar 13 on average, or Feb 20 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 244 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 89004 Planting calendar → Nevada frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026