ZIP 73034 Zone 7b
Oklahoma · USDA zone 7b, average annual extreme minimum 5°F to 10°F.
Nearest qualified station: GUTHRIE 5S, OK US (USC00343821), 8.1 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 24 | Earlier date. A last 32°F on or after this day is common. |
| 50% | April 10 | Median. |
| 10% | April 30 | 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 14 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | October 28 | Median. |
| 90% | November 10 | 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% | 222 |
| 50% | 199 |
| 90% | 178 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 17 | March 30 | March 11 |
| First, on or before | October 23 | November 5 | November 22 |
| Season at least | 243 days | 220 days | 197 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | May 7 | April 22 | April 6 |
| First, on or before | October 4 | October 19 | November 1 |
| Season at least | 199 days | 179 days | 159 days |
Station GUTHRIE 5S, OK US (USC00343821). Completeness flag R, 22 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 338.3 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.