Aurora, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -3.2 °C (low) to 9.4 °C (high). Annual precipitation averages 710.2 Millimeters. Aurora is located in USDA Plant Hardiness Zone 3a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -20.7 °C | -8.3 °C | 23.88 mm |
| February | -19.3 °C | -5 °C | 19.56 mm |
| March | -11.7 °C | 2.1 °C | 27.43 mm |
| April | -3.8 °C | 9.6 °C | 49.02 mm |
| May | 3.1 °C | 17.1 °C | 77.98 mm |
| June | 8.9 °C | 22.4 °C | 103.38 mm |
| July | 11.4 °C | 25.2 °C | 103.63 mm |
| August | 10 °C | 24 °C | 83.57 mm |
| September | 6.1 °C | 19.2 °C | 84.58 mm |
| October | -0.1 °C | 10.8 °C | 71.63 mm |
| November | -7.5 °C | 1.6 °C | 37.59 mm |
| December | -15.3 °C | -5.4 °C | 27.94 mm |
| Annual | -3.2 °C | 9.4 °C | 710.19 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3a : -40°C to -37.2°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |