Grand Beach, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.8 °F (low) to 57.1 °F (high). Annual precipitation averages 38.3 Inches. Grand Beach is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.2 °F | 32.3 °F | 2.52 in. |
| February | 21.6 °F | 35.0 °F | 2.02 in. |
| March | 29.6 °F | 44.0 °F | 2.31 in. |
| April | 39.5 °F | 55.3 °F | 3.45 in. |
| May | 49.8 °F | 65.9 °F | 3.54 in. |
| June | 59.9 °F | 74.7 °F | 4.22 in. |
| July | 65.6 °F | 79.1 °F | 3.97 in. |
| August | 64.5 °F | 78.1 °F | 4.15 in. |
| September | 57.5 °F | 72.3 °F | 3.33 in. |
| October | 45.3 °F | 61.4 °F | 3.79 in. |
| November | 35.4 °F | 49.1 °F | 2.69 in. |
| December | 25.3 °F | 37.4 °F | 2.32 in. |
| Annual | 42.8 °F | 57.1 °F | 38.31 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |