Rochester Hills, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.2 °C (low) to 14.6 °C (high). Annual precipitation averages 862.6 Millimeters. Rochester Hills 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 | -8.5 °C | -0.4 °C | 60.96 mm |
| February | -8 °C | 1.2 °C | 50.04 mm |
| March | -3.7 °C | 6.7 °C | 57.66 mm |
| April | 2.5 °C | 14.1 °C | 77.72 mm |
| May | 8.7 °C | 20.7 °C | 96.27 mm |
| June | 14.2 °C | 26.1 °C | 82.04 mm |
| July | 16.4 °C | 28.3 °C | 86.87 mm |
| August | 16 °C | 27.2 °C | 82.04 mm |
| September | 11.9 °C | 23.6 °C | 76.2 mm |
| October | 5.6 °C | 16.1 °C | 71.63 mm |
| November | 0.1 °C | 8.8 °C | 62.99 mm |
| December | -4.7 °C | 2.2 °C | 58.17 mm |
| Annual | 4.2 °C | 14.6 °C | 862.59 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 |