Newport, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.2 °F (low) to 55 °F (high). Annual precipitation averages 34 Inches. Newport 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.6 °F | 23.7 °F | 1.03 in. |
| February | 10.9 °F | 28.6 °F | 0.95 in. |
| March | 22.8 °F | 40.8 °F | 1.73 in. |
| April | 36.2 °F | 55.6 °F | 3.02 in. |
| May | 48.8 °F | 68.1 °F | 4.24 in. |
| June | 59.3 °F | 78.1 °F | 5.06 in. |
| July | 64.2 °F | 82.8 °F | 4.26 in. |
| August | 61.6 °F | 80.2 °F | 4.43 in. |
| September | 53.0 °F | 72.6 °F | 3.34 in. |
| October | 39.9 °F | 58.3 °F | 2.92 in. |
| November | 27.1 °F | 42.6 °F | 1.7 in. |
| December | 14.8 °F | 29.0 °F | 1.36 in. |
| Annual | 37.2 °F | 55 °F | 34.04 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Dfb - Humid Continental Mild Summer, Wet All Year |