Big Rapids, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 13.4 °C (high). Annual precipitation averages 931.7 Millimeters. Big Rapids is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.2 °C | -1.8 °C | 61.21 mm |
| February | -10.4 °C | -0.2 °C | 47.24 mm |
| March | -6.2 °C | 5.6 °C | 60.96 mm |
| April | 0.2 °C | 13 °C | 96.01 mm |
| May | 6.6 °C | 19.8 °C | 98.04 mm |
| June | 11.9 °C | 25.1 °C | 86.11 mm |
| July | 13.9 °C | 27.3 °C | 85.09 mm |
| August | 13.1 °C | 26.3 °C | 97.79 mm |
| September | 8.9 °C | 22.3 °C | 76.45 mm |
| October | 3 °C | 14.9 °C | 91.69 mm |
| November | -2.1 °C | 7.3 °C | 75.44 mm |
| December | -6.5 °C | 1.1 °C | 55.63 mm |
| Annual | 1.9 °C | 13.4 °C | 931.66 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |