ZIP 97005 Zone 9a
Oregon · USDA zone 9a, average annual extreme minimum 20°F to 25°F.
Nearest qualified station: NATURE PARK-BEAVERTON, OR US (USC00355945), 1.8 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% | December 26 | Earlier date. A last 32°F on or after this day is common. |
| 50% | February 11 | Median. |
| 10% | March 5 | 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 11 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | December 5 | Median. |
| 90% | January 12 | 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% | 344 |
| 50% | 303 |
| 90% | 264 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | February 16 | January 6 | December 2 |
| First, on or before | November 24 | December 21 | February 5 |
| Season at least | 365 days | 357 days | 312 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 15 | March 23 | February 25 |
| First, on or before | October 26 | November 13 | December 4 |
| Season at least | 268 days | 235 days | 206 days |
Station NATURE PARK-BEAVERTON, OR US (USC00355945). Completeness flag R, 12 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 96.9%. Freeze dates are conditional on that threshold occurring. Elevation 56.4 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.