Rosemount, 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 12.7 °C (high). Annual precipitation averages 885.9 Millimeters. Rosemount 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 °C | -4.8 °C | 25.65 mm |
| February | -12.2 °C | -2.2 °C | 25.91 mm |
| March | -5.4 °C | 4.8 °C | 46.23 mm |
| April | 2.1 °C | 13.2 °C | 80.52 mm |
| May | 8.9 °C | 20.3 °C | 111.25 mm |
| June | 14.7 °C | 25.6 °C | 130.3 mm |
| July | 17 °C | 27.8 °C | 113.03 mm |
| August | 15.6 °C | 26.7 °C | 115.82 mm |
| September | 10.9 °C | 22.7 °C | 87.63 mm |
| October | 3.7 °C | 14.8 °C | 71.37 mm |
| November | -3.5 °C | 5.6 °C | 44.7 mm |
| December | -10.4 °C | -1.9 °C | 33.53 mm |
| Annual | 2.3 °C | 12.7 °C | 885.94 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |