Brandon, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33 °F (low) to 51.8 °F (high). Annual precipitation averages 26.4 Inches. Brandon 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 | 1.5 °F | 19.0 °F | 0.7 in. |
| February | 5.1 °F | 24.1 °F | 0.65 in. |
| March | 17.8 °F | 36.4 °F | 1.15 in. |
| April | 32.1 °F | 52.4 °F | 2.14 in. |
| May | 45.6 °F | 66.1 °F | 3.16 in. |
| June | 56.3 °F | 75.6 °F | 4.36 in. |
| July | 61.0 °F | 80.3 °F | 4.01 in. |
| August | 58.2 °F | 78.4 °F | 3.36 in. |
| September | 49.5 °F | 70.5 °F | 2.57 in. |
| October | 36.3 °F | 55.1 °F | 2.56 in. |
| November | 22.7 °F | 38.2 °F | 0.97 in. |
| December | 9.6 °F | 24.9 °F | 0.79 in. |
| Annual | 33 °F | 51.8 °F | 26.42 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 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |