Last spring frost
Mar 19
Frost Dates for Lookout Mountain, AL
First fall frost
Nov 13
Growing season
240 days
Hardiness zone
8a
In an average year around Lookout Mountain, AL, the last spring frost (32°F) is about Mar 19 and the first fall frost is about Nov 13, giving roughly a 240-day growing season. To be safe most years, wait until Feb 27 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 21 | Apr 1 | Mar 16 |
| Freeze (32°F) | Apr 7 | Mar 19 | Feb 27 |
| Hard (28°F) | Mar 24 | Mar 4 | Feb 11 |
| Severe (24°F) | Mar 15 | Feb 17 | Jan 21 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 21 | Apr 14 | Apr 9 | Apr 5 | Apr 1 | Mar 30 | Mar 26 | Mar 21 | Mar 16 |
| 32°F | Apr 7 | Mar 31 | Mar 27 | Mar 23 | Mar 19 | Mar 15 | Mar 11 | Mar 6 | Feb 27 |
| 28°F | Mar 24 | Mar 18 | Mar 13 | Mar 9 | Mar 4 | Mar 1 | Feb 25 | Feb 19 | Feb 11 |
| 24°F | Mar 15 | Mar 6 | Feb 28 | Feb 23 | Feb 17 | Feb 10 | Feb 4 | Jan 31 | Jan 21 |
| 20°F | Mar 2 | Feb 20 | Feb 11 | Feb 4 | Jan 31 | Jan 27 | Jan 21 | Jan 13 | Jan 4 |
| 16°F | Feb 14 | Feb 4 | Jan 31 | Jan 29 | Jan 23 | Jan 18 | Jan 13 | Jan 8 | Dec 31 |
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 3 | Nov 18 |
| Freeze (32°F) | Nov 1 | Nov 13 | Dec 1 |
| Hard (28°F) | Nov 9 | Nov 27 | Dec 23 |
| Severe (24°F) | Nov 18 | Dec 13 | Jan 11 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 22 | Oct 26 | Oct 30 | Nov 1 | Nov 3 | Nov 5 | Nov 8 | Nov 12 | Nov 18 |
| 32°F | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 16 | Nov 20 | Nov 25 | Dec 1 |
| 28°F | Nov 9 | Nov 14 | Nov 18 | Nov 23 | Nov 27 | Dec 1 | Dec 5 | Dec 9 | Dec 23 |
| 24°F | Nov 18 | Nov 27 | Dec 2 | Dec 7 | Dec 13 | Dec 22 | Dec 28 | Jan 3 | Jan 11 |
| 20°F | Dec 4 | Dec 12 | Dec 22 | Dec 28 | Jan 1 | Jan 6 | Jan 11 | Jan 16 | Jan 28 |
| 16°F | Dec 19 | Dec 28 | Jan 1 | Jan 6 | Jan 11 | Jan 15 | Jan 20 | Jan 26 | Feb 1 |
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: Gadsden, Al, about 3.4 miles away@if(!empty($station['elevation_ft'])), at 565 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 Lookout Mountain, AL?
On average, the last spring frost (32°F) around Lookout Mountain, AL is about Mar 19. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 27.
When is the first frost in the fall?
The first fall frost around Lookout Mountain, 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 19 on average, or Feb 27 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 240 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 35904 Planting calendar → Alabama frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026