Last spring frost
Mar 4
Frost Dates for Montgomery, AL
First fall frost
Nov 18
Growing season
262 days
In an average year around Montgomery, AL, the last spring frost (32°F) is about Mar 4 and the first fall frost is about Nov 18, giving roughly a 262-day growing season. To be safe most years, wait until Feb 9 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 7 | Mar 17 | Feb 25 |
| Freeze (32°F) | Mar 23 | Mar 4 | Feb 9 |
| Hard (28°F) | Mar 14 | Feb 17 | Jan 24 |
| Severe (24°F) | Feb 27 | Jan 31 | Jan 3 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 7 | Apr 1 | Mar 27 | Mar 22 | Mar 17 | Mar 14 | Mar 9 | Mar 3 | Feb 25 |
| 32°F | Mar 23 | Mar 17 | Mar 13 | Mar 9 | Mar 4 | Feb 28 | Feb 24 | Feb 19 | Feb 9 |
| 28°F | Mar 14 | Mar 5 | Feb 28 | Feb 23 | Feb 17 | Feb 12 | Feb 6 | Feb 1 | Jan 24 |
| 24°F | Feb 27 | Feb 17 | Feb 8 | Feb 3 | Jan 31 | Jan 27 | Jan 20 | Jan 13 | Jan 3 |
| 20°F | Feb 9 | Feb 2 | Jan 28 | Jan 23 | Jan 17 | Jan 13 | Jan 7 | Jan 1 | Dec 21 |
| 16°F | Feb 4 | Jan 30 | Jan 23 | Jan 17 | Jan 14 | Jan 10 | Jan 6 | Jan 1 | Dec 22 |
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 6 | Nov 27 |
| Freeze (32°F) | Nov 1 | Nov 18 | Dec 10 |
| Hard (28°F) | Nov 10 | Dec 4 | Jan 4 |
| Severe (24°F) | Nov 24 | Dec 27 | Jan 28 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 22 | Oct 27 | Nov 1 | Nov 3 | Nov 6 | Nov 9 | Nov 13 | Nov 18 | Nov 27 |
| 32°F | Nov 1 | Nov 6 | Nov 9 | Nov 14 | Nov 18 | Nov 23 | Nov 29 | Dec 3 | Dec 10 |
| 28°F | Nov 10 | Nov 18 | Nov 24 | Nov 30 | Dec 4 | Dec 8 | Dec 16 | Dec 27 | Jan 4 |
| 24°F | Nov 24 | Dec 2 | Dec 8 | Dec 17 | Dec 27 | Jan 1 | Jan 6 | Jan 15 | Jan 28 |
| 20°F | Dec 4 | Dec 15 | Dec 26 | Jan 1 | Jan 4 | Jan 9 | Jan 14 | Jan 20 | Jan 31 |
| 16°F | Dec 17 | Dec 31 | Jan 3 | Jan 6 | Jan 10 | Jan 15 | Jan 19 | Jan 25 | 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 6Sw, Al, about 10.1 miles away@if(!empty($station['elevation_ft'])), at 225 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 Montgomery, AL?
On average, the last spring frost (32°F) around Montgomery, AL is about Mar 4. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 9.
When is the first frost in the fall?
The first fall frost around Montgomery, AL typically arrives about Nov 18. 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 4 on average, or Feb 9 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 262 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 36114 Planting calendar → Alabama frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026