Ada, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.5 °C (low) to 10.6 °C (high). Annual precipitation averages 610.4 Millimeters. Ada is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -18.6 °C | -8.9 °C | 19.05 mm |
| February | -16.5 °C | -6 °C | 16.76 mm |
| March | -8.8 °C | 1.2 °C | 24.13 mm |
| April | -0.4 °C | 11.3 °C | 35.56 mm |
| May | 6.7 °C | 19.3 °C | 76.2 mm |
| June | 13.1 °C | 24.6 °C | 108.97 mm |
| July | 15.1 °C | 26.9 °C | 84.33 mm |
| August | 13.3 °C | 26.4 °C | 74.42 mm |
| September | 8.6 °C | 21.7 °C | 71.63 mm |
| October | 1.7 °C | 12.9 °C | 54.61 mm |
| November | -6.3 °C | 2.9 °C | 22.35 mm |
| December | -13.9 °C | -5.3 °C | 22.35 mm |
| Annual | -0.5 °C | 10.6 °C | 610.36 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |