Frost dates / Alabama / Dothan
Frost dates in Dothan, AL
The station on this page is DOTHAN RGNL AP, AL US (USW00013839), 6.6 miles from the city point. Population in the Census 2024 estimate is 71,650.
Zone 9aUSDA average annual extreme minimum 20°F to 25°F, from ZIP 36303 (2.4 miles from the city point used on this page).
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Last 32°F in spring
NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.
| Probability | Date | How to read it |
|---|---|---|
| 90% | February 3 | Earlier date. A last 32°F on or after this day is common. |
| 50% | March 1 | Median. |
| 10% | March 21 | Later date. A last 32°F on or after this day is uncommon. |
First 32°F in fall
NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.
| Probability | Date | How to read it |
|---|---|---|
| 10% | November 7 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | November 24 | Median. |
| 90% | December 24 | Later date. A first 32°F on or before this day is common. |
32°F growing-season length
Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.
| Probability the season is at least this long | Days |
|---|---|
| 10% | 303 |
| 50% | 270 |
| 90% | 240 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 11 | February 12 | January 14 |
| First, on or before | November 17 | December 16 | January 17 |
| Season at least | 339 days | 304 days | 267 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 1 | March 15 | February 23 |
| First, on or before | October 30 | November 12 | December 1 |
| Season at least | 269 days | 242 days | 219 days |
Station DOTHAN RGNL AP, AL US (USW00013839). Completeness flag R, 17 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 99.9%. Freeze dates are conditional on that threshold occurring. Elevation 112.8 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.
Check a crop against this station
Dothan, AL
Zone 9aAverage annual extreme minimum 20°F to 25°F
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Alabama. Nearest qualified station: DOTHAN RGNL AP, AL US (USW00013839), 6.6 miles. Median last 32°F March 1. Median first 32°F November 24. The 50% growing-season length is 270 days.
32°F probabilities at this station
| 10% | 50% | 90% | |
|---|---|---|---|
| Last 32°F on or after | March 21 | March 1 | February 3 |
| First 32°F on or before | November 7 | November 24 | December 24 |
Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.
Planting calendar
Frost dates for Alabama are above. Planting windows appear for states with a cited extension guide. The fall and seed tools use the numbers you enter and the station dates.
Date checks use your device’s calendar and appear after the page loads.