ZIP 97212 Zone 8b
Oregon · USDA zone 8b, average annual extreme minimum 15°F to 20°F.
Nearest qualified station: PORTLAND KGW-TV, OR US (USC00356749), 2.9 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% | January 24 | Earlier date. A last 32°F on or after this day is common. |
| 50% | February 25 | 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 10 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | December 1 | Median. |
| 90% | December 27 | 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% | 318 |
| 50% | 280 |
| 90% | 245 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | February 26 | January 31 | December 21 |
| First, on or before | November 25 | December 20 | January 30 |
| Season at least | 365 days | 329 days | 292 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 21 | March 29 | March 7 |
| First, on or before | October 28 | November 12 | December 1 |
| Season at least | 258 days | 227 days | 200 days |
Station PORTLAND KGW-TV, OR US (USC00356749). Completeness flag R, 24 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 99.7%. Freeze dates are conditional on that threshold occurring. Elevation 48.5 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.