Fairchild, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.3 °F (low) to 54.1 °F (high). Annual precipitation averages 35 Inches. Fairchild is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.7 °F | 23.1 °F | 1.26 in. |
| February | 7.7 °F | 28.0 °F | 1.03 in. |
| March | 19.8 °F | 40.5 °F | 1.8 in. |
| April | 32.6 °F | 54.7 °F | 3.24 in. |
| May | 44.6 °F | 67.5 °F | 4.16 in. |
| June | 54.6 °F | 76.6 °F | 5.02 in. |
| July | 58.5 °F | 80.8 °F | 3.87 in. |
| August | 56.2 °F | 78.9 °F | 4.28 in. |
| September | 47.8 °F | 71.2 °F | 4.03 in. |
| October | 36.1 °F | 57.3 °F | 2.93 in. |
| November | 24.6 °F | 41.7 °F | 1.89 in. |
| December | 12.4 °F | 28.5 °F | 1.46 in. |
| Annual | 33.3 °F | 54.1 °F | 34.97 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°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 |