Spring Grove, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2 °C (low) to 12.1 °C (high). Annual precipitation averages 928.9 Millimeters. Spring Grove 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 | -13.7 °C | -4.8 °C | 25.15 mm |
| February | -11.8 °C | -2.4 °C | 23.62 mm |
| March | -4.9 °C | 4.8 °C | 41.15 mm |
| April | 1.4 °C | 12.6 °C | 102.62 mm |
| May | 8.1 °C | 19.2 °C | 117.6 mm |
| June | 14.1 °C | 24.4 °C | 155.96 mm |
| July | 16.1 °C | 26.4 °C | 109.98 mm |
| August | 14.7 °C | 25.3 °C | 113.03 mm |
| September | 10.1 °C | 21.7 °C | 94.49 mm |
| October | 3.4 °C | 14.2 °C | 69.34 mm |
| November | -3.3 °C | 5.6 °C | 45.21 mm |
| December | -9.7 °C | -1.6 °C | 30.73 mm |
| Annual | 2 °C | 12.1 °C | 928.88 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 |