Last spring frost
Mar 26
Frost Dates for Oneonta, AL
First fall frost
Nov 10
Growing season
230 days
Hardiness zone
8a
In an average year around Oneonta, AL, the last spring frost (32°F) is about Mar 26 and the first fall frost is about Nov 10, giving roughly a 230-day growing season. To be safe most years, wait until Mar 2 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 24 | Apr 6 | Mar 19 |
| Freeze (32°F) | Apr 12 | Mar 26 | Mar 2 |
| Hard (28°F) | Mar 29 | Mar 8 | Feb 16 |
| Severe (24°F) | Mar 17 | Feb 26 | Jan 31 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 24 | Apr 18 | Apr 14 | Apr 10 | Apr 6 | Apr 3 | Mar 30 | Mar 26 | Mar 19 |
| 32°F | Apr 12 | Apr 6 | Apr 2 | Mar 30 | Mar 26 | Mar 21 | Mar 17 | Mar 11 | Mar 2 |
| 28°F | Mar 29 | Mar 23 | Mar 17 | Mar 13 | Mar 8 | Mar 4 | Feb 28 | Feb 24 | Feb 16 |
| 24°F | Mar 17 | Mar 10 | Mar 5 | Feb 28 | Feb 26 | Feb 21 | Feb 14 | Feb 8 | Jan 31 |
| 20°F | Mar 6 | Feb 28 | Feb 21 | Feb 14 | Feb 9 | Feb 3 | Jan 31 | Jan 22 | Jan 9 |
| 16°F | Feb 28 | Feb 15 | Feb 9 | Feb 4 | Jan 31 | Jan 25 | Jan 18 | Jan 10 | Dec 30 |
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 30 | Nov 14 |
| Freeze (32°F) | Oct 26 | Nov 10 | Nov 30 |
| Hard (28°F) | Nov 5 | Nov 24 | Dec 15 |
| Severe (24°F) | Nov 15 | Dec 6 | Jan 7 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 17 | Oct 21 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 8 | Nov 14 |
| 32°F | Oct 26 | Oct 31 | Nov 3 | Nov 6 | Nov 10 | Nov 13 | Nov 17 | Nov 22 | Nov 30 |
| 28°F | Nov 5 | Nov 11 | Nov 15 | Nov 20 | Nov 24 | Nov 29 | Dec 2 | Dec 6 | Dec 15 |
| 24°F | Nov 15 | Nov 23 | Nov 29 | Dec 2 | Dec 6 | Dec 11 | Dec 21 | Dec 30 | Jan 7 |
| 20°F | Nov 27 | Dec 5 | Dec 11 | Dec 19 | Dec 28 | Jan 2 | Jan 7 | Jan 16 | Jan 30 |
| 16°F | Dec 7 | Dec 20 | Dec 29 | Jan 2 | Jan 7 | Jan 13 | Jan 19 | Jan 27 | Feb 5 |
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: Oneonta, Al, about 2 miles away@if(!empty($station['elevation_ft'])), at 1,100 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 Oneonta, AL?
On average, the last spring frost (32°F) around Oneonta, AL is about Mar 26. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 2.
When is the first frost in the fall?
The first fall frost around Oneonta, AL typically arrives about Nov 10. 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 26 on average, or Mar 2 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 230 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 35121 Planting calendar → Alabama frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026