Three Oaks, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5 °C (low) to 14.6 °C (high). Annual precipitation averages 1017.5 Millimeters. Three Oaks is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.6 °C | -0.2 °C | 69.09 mm |
| February | -6.5 °C | 1.6 °C | 56.64 mm |
| March | -2.2 °C | 7.4 °C | 60.2 mm |
| April | 3.6 °C | 14.2 °C | 89.66 mm |
| May | 9.6 °C | 20.4 °C | 98.81 mm |
| June | 14.6 °C | 25.7 °C | 108.46 mm |
| July | 17.2 °C | 27.8 °C | 102.11 mm |
| August | 16.4 °C | 26.8 °C | 107.19 mm |
| September | 12.3 °C | 23.6 °C | 86.87 mm |
| October | 6.2 °C | 16.7 °C | 102.36 mm |
| November | 0.7 °C | 9 °C | 73.41 mm |
| December | -4.2 °C | 2.7 °C | 62.74 mm |
| Annual | 5 °C | 14.6 °C | 1017.54 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |