ZIP 23434 Zone 8a
Virginia · USDA zone 8a, average annual extreme minimum 10°F to 15°F.
Nearest qualified station: SUFFOLK LAKE KILBY, VA US (USC00448192), 1.9 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 10 | Earlier date. A last 32°F on or after this day is common. |
| 50% | March 27 | 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% | November 2 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | November 15 | Median. |
| 90% | December 1 | 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% | 255 |
| 50% | 233 |
| 90% | 214 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 30 | March 15 | February 24 |
| First, on or before | November 11 | December 1 | December 22 |
| Season at least | 288 days | 259 days | 235 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 20 | April 6 | March 23 |
| First, on or before | October 23 | November 3 | November 16 |
| Season at least | 228 days | 210 days | 193 days |
Station SUFFOLK LAKE KILBY, VA US (USC00448192). 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 6.7 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.