Aurelia, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.7 °C (low) to 14 °C (high). Annual precipitation averages 806.7 Millimeters. Aurelia is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.1 °C | -3.2 °C | 17.78 mm |
| February | -10.8 °C | -0.8 °C | 22.1 mm |
| March | -4.2 °C | 6.7 °C | 43.69 mm |
| April | 2 °C | 14.6 °C | 85.09 mm |
| May | 9.1 °C | 21.1 °C | 109.98 mm |
| June | 15.2 °C | 26.7 °C | 132.33 mm |
| July | 17.1 °C | 28.3 °C | 88.39 mm |
| August | 15.6 °C | 27 °C | 107.44 mm |
| September | 10.7 °C | 23.8 °C | 79.5 mm |
| October | 3.6 °C | 16.4 °C | 57.91 mm |
| November | -3.7 °C | 7.2 °C | 37.08 mm |
| December | -9.7 °C | -0.4 °C | 25.4 mm |
| Annual | 2.7 °C | 14 °C | 806.69 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |