Last spring frost
Mar 13
Frost Dates for Coosada, AL
First fall frost
Nov 13
Growing season
244 days
Hardiness zone
8b
In an average year around Coosada, AL, the last spring frost (32°F) is about Mar 13 and the first fall frost is about Nov 13, 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 16 | Mar 29 | Mar 5 |
| Freeze (32°F) | Mar 31 | Mar 13 | Feb 20 |
| Hard (28°F) | Mar 19 | Feb 27 | Jan 30 |
| Severe (24°F) | Mar 7 | Feb 7 | Jan 9 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 16 | Apr 10 | Apr 5 | Apr 1 | Mar 29 | Mar 24 | Mar 19 | Mar 14 | Mar 5 |
| 32°F | Mar 31 | Mar 25 | Mar 20 | Mar 16 | Mar 13 | Mar 8 | Mar 4 | Feb 28 | Feb 20 |
| 28°F | Mar 19 | Mar 14 | Mar 8 | Mar 3 | Feb 27 | Feb 21 | Feb 15 | Feb 8 | Jan 30 |
| 24°F | Mar 7 | Feb 28 | Feb 21 | Feb 14 | Feb 7 | Feb 2 | Jan 28 | Jan 20 | Jan 9 |
| 20°F | Feb 23 | Feb 9 | Feb 3 | Jan 31 | Jan 26 | Jan 20 | Jan 13 | Jan 5 | Dec 28 |
| 16°F | Feb 8 | Feb 2 | Jan 29 | Jan 23 | Jan 18 | Jan 13 | Jan 8 | Jan 3 | Dec 25 |
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 21 | Nov 3 | Nov 18 |
| Freeze (32°F) | Oct 31 | Nov 13 | Dec 1 |
| Hard (28°F) | Nov 8 | Nov 25 | Dec 24 |
| Severe (24°F) | Nov 17 | Dec 14 | Jan 16 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 21 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 9 | Nov 12 | Nov 18 |
| 32°F | Oct 31 | Nov 3 | Nov 6 | Nov 10 | Nov 13 | Nov 16 | Nov 19 | Nov 23 | Dec 1 |
| 28°F | Nov 8 | Nov 14 | Nov 18 | Nov 22 | Nov 25 | Nov 29 | Dec 3 | Dec 10 | Dec 24 |
| 24°F | Nov 17 | Nov 25 | Dec 1 | Dec 6 | Dec 14 | Dec 24 | Jan 1 | Jan 6 | Jan 16 |
| 20°F | Dec 1 | Dec 9 | Dec 22 | Dec 30 | Jan 2 | Jan 6 | Jan 12 | Jan 20 | Feb 1 |
| 16°F | Dec 15 | Dec 29 | Jan 2 | Jan 6 | Jan 10 | Jan 14 | Jan 19 | Jan 26 | Feb 2 |
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: Montgomery Ap, Al, about 14.7 miles away@if(!empty($station['elevation_ft'])), at 202 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 Coosada, AL?
On average, the last spring frost (32°F) around Coosada, AL 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 Coosada, AL typically arrives about Nov 13. 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 36020 Planting calendar → Alabama frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026