ZIP 86005 Zone 6a
Arizona · USDA zone 6a, average annual extreme minimum -10°F to -5°F.
Nearest qualified station: FLAGSTAFF PULLIAM AP, AZ US (USW00003103), 4.7 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% | May 21 | Earlier date. A last 32°F on or after this day is common. |
| 50% | June 4 | Median. |
| 10% | June 19 | 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% | September 16 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | September 28 | Median. |
| 90% | October 9 | 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% | 133 |
| 50% | 115 |
| 90% | 96 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | June 6 | May 20 | May 1 |
| First, on or before | September 28 | October 9 | October 22 |
| Season at least | 162 days | 139 days | 117 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | July 1 | June 16 | June 3 |
| First, on or before | September 6 | September 19 | September 28 |
| Season at least | 109 days | 92 days | 73 days |
Station FLAGSTAFF PULLIAM AP, AZ US (USW00003103). Completeness flag S, 26 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 2134.5 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.