Marshall, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.6 °C (low) to 12.8 °C (high). Annual precipitation averages 707.9 Millimeters. Marshall 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 | -14.7 °C | -4.8 °C | 17.27 mm |
| February | -12.6 °C | -2.4 °C | 20.07 mm |
| March | -5.9 °C | 4.2 °C | 37.08 mm |
| April | 0.9 °C | 12.9 °C | 68.83 mm |
| May | 8.2 °C | 20.2 °C | 91.69 mm |
| June | 14.4 °C | 25.9 °C | 107.44 mm |
| July | 16.4 °C | 28.2 °C | 92.2 mm |
| August | 14.9 °C | 26.8 °C | 86.61 mm |
| September | 10.1 °C | 23.2 °C | 79.5 mm |
| October | 2.8 °C | 15.1 °C | 54.1 mm |
| November | -4.4 °C | 5.7 °C | 30.73 mm |
| December | -11.1 °C | -2 °C | 22.35 mm |
| Annual | 1.6 °C | 12.8 °C | 707.87 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 |