ZIP 40505 Zone 7a
Kentucky · USDA zone 7a, average annual extreme minimum 0°F to 5°F.
Nearest qualified station: LEXINGTON BLUEGRASS AP, KY US (USW00093820), 8.2 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% | March 30 | Earlier date. A last 32°F on or after this day is common. |
| 50% | April 13 | Median. |
| 10% | May 1 | 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 16 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | October 28 | Median. |
| 90% | November 8 | 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% | 217 |
| 50% | 196 |
| 90% | 175 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 16 | March 31 | March 15 |
| First, on or before | October 25 | November 6 | November 22 |
| Season at least | 241 days | 220 days | 199 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | May 11 | April 24 | April 10 |
| First, on or before | October 6 | October 19 | October 30 |
| Season at least | 195 days | 177 days | 156 days |
Station LEXINGTON BLUEGRASS AP, KY US (USW00093820). Completeness flag S, 30 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 298.7 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.