Bay Shore, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.9 °F (low) to 52.5 °F (high). Annual precipitation averages 34.1 Inches. Bay Shore is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.4 °F | 27.4 °F | 2.38 in. |
| February | 14.1 °F | 28.7 °F | 1.56 in. |
| March | 20.4 °F | 37.7 °F | 1.83 in. |
| April | 31.7 °F | 49.4 °F | 2.84 in. |
| May | 42.8 °F | 62.7 °F | 3.02 in. |
| June | 52.8 °F | 70.7 °F | 2.94 in. |
| July | 59.2 °F | 75.8 °F | 2.67 in. |
| August | 58.9 °F | 75.6 °F | 3.17 in. |
| September | 52.1 °F | 69.4 °F | 3.63 in. |
| October | 40.8 °F | 56.0 °F | 4.32 in. |
| November | 31.7 °F | 43.7 °F | 3.05 in. |
| December | 23.0 °F | 33.4 °F | 2.66 in. |
| Annual | 36.9 °F | 52.5 °F | 34.07 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |