Last spring frost
Mar 18
Frost Dates for Apple Valley, CA
First fall frost
Nov 11
Growing season
233 days
Hardiness zone
8b
In an average year around Apple Valley, CA, the last spring frost (32°F) is about Mar 18 and the first fall frost is about Nov 11, giving roughly a 233-day growing season. To be safe most years, wait until Feb 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) | Apr 30 | Apr 11 | Mar 22 |
| Freeze (32°F) | Apr 12 | Mar 18 | Feb 23 |
| Hard (28°F) | Mar 19 | Feb 22 | Jan 27 |
| Severe (24°F) | Feb 25 | Jan 29 | Dec 24 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 30 | Apr 24 | Apr 20 | Apr 16 | Apr 11 | Apr 8 | Apr 4 | Mar 30 | Mar 22 |
| 32°F | Apr 12 | Apr 5 | Mar 31 | Mar 25 | Mar 18 | Mar 13 | Mar 7 | Mar 2 | Feb 23 |
| 28°F | Mar 19 | Mar 8 | Mar 2 | Feb 26 | Feb 22 | Feb 16 | Feb 11 | Feb 4 | Jan 27 |
| 24°F | Feb 25 | Feb 15 | Feb 9 | Feb 2 | Jan 29 | Jan 20 | Jan 10 | Jan 2 | Dec 24 |
| 20°F | Feb 7 | Jan 26 | Jan 17 | Jan 9 | Jan 3 | Dec 30 | Dec 25 | Dec 15 | Dec 8 |
| 16°F | Jan 17 | Jan 10 | Jan 5 | Jan 2 | Dec 31 | Dec 27 | Dec 21 | Dec 14 | Dec 8 |
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 16 | Nov 1 | Nov 14 |
| Freeze (32°F) | Oct 27 | Nov 11 | Nov 26 |
| Hard (28°F) | Nov 7 | Nov 24 | Dec 11 |
| Severe (24°F) | Nov 16 | Dec 7 | Jan 4 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 16 | Oct 22 | Oct 26 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 10 | Nov 14 |
| 32°F | Oct 27 | Nov 1 | Nov 5 | Nov 8 | Nov 11 | Nov 13 | Nov 17 | Nov 20 | Nov 26 |
| 28°F | Nov 7 | Nov 12 | Nov 16 | Nov 20 | Nov 24 | Nov 28 | Dec 1 | Dec 5 | Dec 11 |
| 24°F | Nov 16 | Nov 25 | Nov 30 | Dec 3 | Dec 7 | Dec 12 | Dec 18 | Dec 25 | Jan 4 |
| 20°F | Dec 1 | Dec 6 | Dec 11 | Dec 15 | Dec 21 | Dec 27 | Jan 1 | Jan 7 | Jan 19 |
| 16°F | Dec 6 | Dec 12 | Dec 18 | Dec 23 | Dec 28 | Dec 31 | Jan 3 | Jan 9 | Jan 16 |
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: Victorville, Ca, about 9.5 miles away@if(!empty($station['elevation_ft'])), at 2,880 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 Apple Valley, CA?
On average, the last spring frost (32°F) around Apple Valley, CA is about Mar 18. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 23.
When is the first frost in the fall?
The first fall frost around Apple Valley, CA typically arrives about Nov 11. 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 18 on average, or Feb 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 233 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 92307 Planting calendar → California frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026