Fredonia, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.6 °F (low) to 51.5 °F (high). Annual precipitation averages 21.8 Inches. Fredonia 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 | 1.3 °F | 19.1 °F | 0.49 in. |
| February | 5.4 °F | 23.8 °F | 0.53 in. |
| March | 16.5 °F | 36.0 °F | 0.88 in. |
| April | 29.2 °F | 52.3 °F | 1.47 in. |
| May | 42.0 °F | 64.8 °F | 3.3 in. |
| June | 53.1 °F | 74.2 °F | 3.99 in. |
| July | 57.8 °F | 80.4 °F | 3.21 in. |
| August | 55.4 °F | 79.5 °F | 2.57 in. |
| September | 46.2 °F | 70.7 °F | 2.34 in. |
| October | 33.2 °F | 54.8 °F | 1.76 in. |
| November | 19.0 °F | 38.2 °F | 0.61 in. |
| December | 8.1 °F | 24.6 °F | 0.6 in. |
| Annual | 30.6 °F | 51.5 °F | 21.75 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |