ZIP 48312 Zone 6b
Michigan · USDA zone 6b, average annual extreme minimum -5°F to 0°F.
Nearest qualified station: MT CLEMENS ANG BASE, MI US (USW00014804), 10.3 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% | April 16 | Earlier date. A last 32°F on or after this day is common. |
| 50% | April 30 | Median. |
| 10% | May 15 | 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 7 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | October 24 | Median. |
| 90% | November 3 | 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% | 192 |
| 50% | 174 |
| 90% | 153 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | May 3 | April 18 | April 3 |
| First, on or before | October 20 | November 3 | November 15 |
| Season at least | 216 days | 196 days | 177 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | May 28 | May 11 | April 28 |
| First, on or before | September 26 | October 9 | October 24 |
| Season at least | 169 days | 150 days | 129 days |
Station MT CLEMENS ANG BASE, MI US (USW00014804). Completeness flag S, 24 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 176.8 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.