Butterfield, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.4 °F (low) to 55.1 °F (high). Annual precipitation averages 30.5 Inches. Butterfield is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.1 °F | 23.4 °F | 0.73 in. |
| February | 10.1 °F | 27.7 °F | 0.84 in. |
| March | 22.3 °F | 40.1 °F | 1.62 in. |
| April | 34.5 °F | 55.9 °F | 3.03 in. |
| May | 47.5 °F | 68.8 °F | 4.21 in. |
| June | 58.4 °F | 78.6 °F | 4.76 in. |
| July | 61.9 °F | 82.1 °F | 3.7 in. |
| August | 59.0 °F | 79.6 °F | 3.78 in. |
| September | 50.3 °F | 73.9 °F | 3.17 in. |
| October | 37.6 °F | 59.4 °F | 2.42 in. |
| November | 24.4 °F | 42.6 °F | 1.3 in. |
| December | 12.6 °F | 28.6 °F | 0.98 in. |
| Annual | 35.4 °F | 55.1 °F | 30.54 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |