Regal, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.2 °F (low) to 52.9 °F (high). Annual precipitation averages 29.3 Inches. Regal is located in USDA Plant Hardiness Zone 4b. 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 | 2.6 °F | 20.5 °F | 0.75 in. |
| February | 5.9 °F | 25.3 °F | 0.8 in. |
| March | 18.9 °F | 37.7 °F | 1.51 in. |
| April | 32.5 °F | 53.6 °F | 2.54 in. |
| May | 45.5 °F | 67.0 °F | 3.37 in. |
| June | 56.3 °F | 76.8 °F | 4.55 in. |
| July | 60.8 °F | 81.2 °F | 4.27 in. |
| August | 57.9 °F | 78.9 °F | 3.88 in. |
| September | 49.2 °F | 71.4 °F | 2.87 in. |
| October | 36.2 °F | 56.5 °F | 2.5 in. |
| November | 23.0 °F | 39.5 °F | 1.33 in. |
| December | 10.1 °F | 25.9 °F | 0.94 in. |
| Annual | 33.2 °F | 52.9 °F | 29.31 in. |
| 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |