ZIP 35244 Zone 8a
Alabama · USDA zone 8a, average annual extreme minimum 10°F to 15°F.
Nearest qualified station: HELENA, AL US (USC00013781), 5.6 miles from the Census ZCTA internal point for this ZIP.
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 26 | Earlier date. A last 32°F on or after this day is common. |
| 50% | March 19 | Median. |
| 10% | April 9 | 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% | October 26 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | November 8 | Median. |
| 90% | November 29 | 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% | 261 |
| 50% | 236 |
| 90% | 210 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 25 | March 4 | February 8 |
| First, on or before | November 3 | November 22 | December 13 |
| Season at least | 292 days | 262 days | 235 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 21 | April 3 | March 15 |
| First, on or before | October 17 | October 30 | November 13 |
| Season at least | 235 days | 210 days | 189 days |
Station HELENA, AL US (USC00013781). 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 100%. Freeze dates are conditional on that threshold occurring. Elevation 146.3 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.