| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 50z - Rudyard Clay Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49715 - Brimley, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 6 | 16 | 28 | 38 | 46 | 52 | 53 | 45 | 36 | 26 | 14 | 31 |
| Avg Max Temp (°F) | 22 | 26 | 35 | 48 | 63 | 70 | 75 | 74 | 65 | 53 | 39 | 28 | 50 |
| Avg Precip (In.) | 2.23 | 1.23 | 1.88 | 2.21 | 2.33 | 3.11 | 3 | 3.4 | 3.69 | 3.14 | 2.91 | 2.36 | 31.49 |