Whittemore, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1 °C (low) to 13.1 °C (high). Annual precipitation averages 813.3 Millimeters. Whittemore is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.8 °C | -2.1 °C | 45.97 mm |
| February | -11.8 °C | -0.5 °C | 39.37 mm |
| March | -7.4 °C | 5.1 °C | 45.21 mm |
| April | -1.1 °C | 12.2 °C | 80.01 mm |
| May | 5.4 °C | 19.3 °C | 85.6 mm |
| June | 10.8 °C | 24.8 °C | 88.65 mm |
| July | 13.6 °C | 27 °C | 79.5 mm |
| August | 12.8 °C | 26.1 °C | 84.58 mm |
| September | 9 °C | 22.3 °C | 69.09 mm |
| October | 2.9 °C | 14.7 °C | 86.61 mm |
| November | -2.6 °C | 7.1 °C | 60.2 mm |
| December | -7.4 °C | 0.9 °C | 48.51 mm |
| Annual | 1 °C | 13.1 °C | 813.3 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |