Chanhassen, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.3 °C (low) to 12.6 °C (high). Annual precipitation averages 819.9 Millimeters. Chanhassen is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.4 °C | -5.1 °C | 22.86 mm |
| February | -12.6 °C | -2.5 °C | 22.86 mm |
| March | -5.7 °C | 4.6 °C | 41.15 mm |
| April | 1.8 °C | 13.1 °C | 73.15 mm |
| May | 8.9 °C | 20.2 °C | 107.95 mm |
| June | 14.7 °C | 25.5 °C | 118.62 mm |
| July | 17.2 °C | 28.1 °C | 105.16 mm |
| August | 15.9 °C | 26.8 °C | 112.78 mm |
| September | 11.3 °C | 22.8 °C | 82.04 mm |
| October | 3.9 °C | 14.6 °C | 62.48 mm |
| November | -3.2 °C | 5.6 °C | 39.12 mm |
| December | -10.6 °C | -2.3 °C | 31.75 mm |
| Annual | 2.3 °C | 12.6 °C | 819.92 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |