| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 50ac - Onaway Moraines |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49709 - Atlanta, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 7 | 7 | 16 | 29 | 40 | 49 | 54 | 52 | 44 | 35 | 26 | 15 | 31 |
| Avg Max Temp (°F) | 26 | 29 | 39 | 53 | 67 | 76 | 81 | 78 | 69 | 57 | 43 | 31 | 54 |
| Avg Precip (In.) | 1.88 | 1.32 | 1.69 | 2.17 | 2.61 | 2.67 | 3.22 | 3.61 | 3.19 | 2.49 | 2.07 | 1.91 | 28.83 |