Viking, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2 °C (low) to 9.4 °C (high). Annual precipitation averages 614.7 Millimeters. Viking is located in USDA Plant Hardiness Zone 3b. 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 | -20.3 °C | -10.1 °C | 18.29 mm |
| February | -18.7 °C | -7.4 °C | 16.51 mm |
| March | -10.5 °C | 0.3 °C | 20.57 mm |
| April | -1.8 °C | 10.2 °C | 31.75 mm |
| May | 5.4 °C | 18.3 °C | 81.79 mm |
| June | 11.9 °C | 23.6 °C | 102.87 mm |
| July | 13.6 °C | 25.9 °C | 92.71 mm |
| August | 12.1 °C | 25.6 °C | 75.44 mm |
| September | 7.1 °C | 20.4 °C | 72.14 mm |
| October | 0.5 °C | 11.5 °C | 52.32 mm |
| November | -7.6 °C | 1.4 °C | 25.4 mm |
| December | -15.4 °C | -6.6 °C | 24.89 mm |
| Annual | -2 °C | 9.4 °C | 614.68 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 3b : -37.2°C to -34.4°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 |