ZIP 70806 Zone 9a
Louisiana · USDA zone 9a, average annual extreme minimum 20°F to 25°F.
Nearest qualified station: BATON ROUGE RYAN AP, LA US (USW00013970), 6.2 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% | January 29 | Earlier date. A last 32°F on or after this day is common. |
| 50% | February 25 | Median. |
| 10% | March 19 | 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 26 | Median. |
| 90% | December 19 | 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% | 311 |
| 50% | 276 |
| 90% | 245 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 8 | February 6 | January 4 |
| First, on or before | November 19 | December 11 | January 18 |
| Season at least | 351 days | 311 days | 274 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 1 | March 13 | February 20 |
| First, on or before | October 30 | November 13 | December 1 |
| Season at least | 275 days | 247 days | 221 days |
Station BATON ROUGE RYAN AP, LA US (USW00013970). Completeness flag S, 29 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 19.5 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.