Magnolia, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.5 °C (low) to 13 °C (high). Annual precipitation averages 756.7 Millimeters. Magnolia 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 | -14.3 °C | -4.4 °C | 19.3 mm |
| February | -12.1 °C | -1.9 °C | 23.88 mm |
| March | -5.6 °C | 4.9 °C | 38.86 mm |
| April | 0.8 °C | 13.4 °C | 72.39 mm |
| May | 7.8 °C | 20.2 °C | 98.81 mm |
| June | 14.2 °C | 25.9 °C | 120.9 mm |
| July | 16.2 °C | 28 °C | 89.15 mm |
| August | 14.6 °C | 26.8 °C | 83.06 mm |
| September | 9.7 °C | 23.2 °C | 82.04 mm |
| October | 2.3 °C | 15.2 °C | 62.99 mm |
| November | -4.9 °C | 5.9 °C | 36.58 mm |
| December | -11.2 °C | -1.8 °C | 28.7 mm |
| Annual | 1.5 °C | 13 °C | 756.66 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 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |