Roseville, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.6 °C (low) to 13.6 °C (high). Annual precipitation averages 950.7 Millimeters. Roseville 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 | -13.2 °C | -3.8 °C | 25.4 mm |
| February | -10.9 °C | -1.4 °C | 28.7 mm |
| March | -4.3 °C | 5.8 °C | 48.51 mm |
| April | 2.2 °C | 14.4 °C | 98.81 mm |
| May | 9 °C | 21.1 °C | 132.59 mm |
| June | 14.9 °C | 26.3 °C | 154.69 mm |
| July | 16.7 °C | 28 °C | 113.28 mm |
| August | 15.3 °C | 26.8 °C | 110.49 mm |
| September | 10.5 °C | 23.6 °C | 88.9 mm |
| October | 3.6 °C | 16.1 °C | 69.85 mm |
| November | -3.2 °C | 6.8 °C | 44.45 mm |
| December | -9.4 °C | -0.7 °C | 35.05 mm |
| Annual | 2.6 °C | 13.6 °C | 950.72 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |