Richville, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31.6 °F (low) to 51.2 °F (high). Annual precipitation averages 26.9 Inches. Richville is located in USDA Plant Hardiness Zone 4a. 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 | -0.3 °F | 18.3 °F | 0.66 in. |
| February | 2.8 °F | 23.1 °F | 0.62 in. |
| March | 16.6 °F | 36.2 °F | 1.13 in. |
| April | 30.8 °F | 52.3 °F | 2.08 in. |
| May | 44.1 °F | 65.8 °F | 3.45 in. |
| June | 55.1 °F | 75.2 °F | 4.51 in. |
| July | 59.6 °F | 79.7 °F | 4.11 in. |
| August | 57.0 °F | 78.0 °F | 3.06 in. |
| September | 48.7 °F | 70.0 °F | 2.86 in. |
| October | 35.5 °F | 54.8 °F | 2.67 in. |
| November | 21.5 °F | 37.4 °F | 0.96 in. |
| December | 7.8 °F | 24.0 °F | 0.78 in. |
| Annual | 31.6 °F | 51.2 °F | 26.89 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 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |