Last spring frost
Apr 7
Frost Dates for Pine Flat, CA
First fall frost
Nov 11
Growing season
217 days
Hardiness zone
7b
In an average year around Pine Flat, CA, the last spring frost (32°F) is about Apr 7 and the first fall frost is about Nov 11, giving roughly a 217-day growing season. To be safe most years, wait until Mar 16 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) | May 16 | Apr 26 | Apr 8 |
| Freeze (32°F) | Apr 28 | Apr 7 | Mar 16 |
| Hard (28°F) | Apr 6 | Mar 10 | Feb 10 |
| Severe (24°F) | Mar 4 | Feb 3 | Dec 27 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 16 | May 9 | May 3 | Apr 30 | Apr 26 | Apr 23 | Apr 18 | Apr 14 | Apr 8 |
| 32°F | Apr 28 | Apr 19 | Apr 14 | Apr 10 | Apr 7 | Apr 4 | Apr 1 | Mar 25 | Mar 16 |
| 28°F | Apr 6 | Mar 30 | Mar 22 | Mar 16 | Mar 10 | Mar 5 | Feb 28 | Feb 22 | Feb 10 |
| 24°F | Mar 4 | Feb 26 | Feb 16 | Feb 9 | Feb 3 | Jan 29 | Jan 20 | Jan 6 | Dec 27 |
| 20°F | Feb 3 | Jan 27 | Jan 18 | Jan 11 | Jan 5 | Dec 31 | Dec 26 | Dec 20 | Dec 12 |
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 17 | Oct 31 | Nov 11 |
| Freeze (32°F) | Oct 30 | Nov 11 | Nov 26 |
| Hard (28°F) | Nov 10 | Nov 24 | Dec 12 |
| Severe (24°F) | Nov 22 | Dec 9 | Jan 11 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 17 | Oct 22 | Oct 25 | Oct 29 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 11 |
| 32°F | Oct 30 | Nov 2 | Nov 5 | Nov 9 | Nov 11 | Nov 14 | Nov 17 | Nov 20 | Nov 26 |
| 28°F | Nov 10 | Nov 14 | Nov 18 | Nov 21 | Nov 24 | Nov 28 | Dec 1 | Dec 5 | Dec 12 |
| 24°F | Nov 22 | Nov 27 | Dec 1 | Dec 5 | Dec 9 | Dec 13 | Dec 21 | Jan 1 | Jan 11 |
| 20°F | Dec 1 | Dec 9 | Dec 13 | Dec 21 | Dec 27 | Jan 1 | Jan 5 | Jan 14 | Jan 26 |
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: Kern River Ph 3, Ca, about 11.7 miles away@if(!empty($station['elevation_ft'])), at 2,703 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 Pine Flat, CA?
On average, the last spring frost (32°F) around Pine Flat, CA is about Apr 7. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 16.
When is the first frost in the fall?
The first fall frost around Pine Flat, 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 Apr 7 on average, or Mar 16 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 217 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 93207 Planting calendar → California frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026