Fredonia, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.9 °F (low) to 54.6 °F (high). Annual precipitation averages 34.6 Inches. Fredonia is located in USDA Plant Hardiness Zone 5b. 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 | 12.3 °F | 27.2 °F | 1.71 in. |
| February | 14.5 °F | 30.5 °F | 1.53 in. |
| March | 23.9 °F | 41.1 °F | 2.03 in. |
| April | 34.2 °F | 52.5 °F | 3.84 in. |
| May | 44.8 °F | 64.4 °F | 3.95 in. |
| June | 54.8 °F | 74.4 °F | 3.9 in. |
| July | 60.2 °F | 79.8 °F | 3.84 in. |
| August | 58.9 °F | 77.9 °F | 3.84 in. |
| September | 51.1 °F | 70.8 °F | 3.07 in. |
| October | 40.0 °F | 58.4 °F | 2.88 in. |
| November | 28.8 °F | 44.9 °F | 2.06 in. |
| December | 18.8 °F | 33.0 °F | 1.96 in. |
| Annual | 36.9 °F | 54.6 °F | 34.61 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |