Glen Flora, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31.3 °F (low) to 52.6 °F (high). Annual precipitation averages 32.6 Inches. Glen Flora is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.2 °F | 22.0 °F | 1.09 in. |
| February | 4.5 °F | 27.0 °F | 1.01 in. |
| March | 17.1 °F | 39.0 °F | 1.59 in. |
| April | 30.4 °F | 52.8 °F | 2.92 in. |
| May | 42.6 °F | 66.2 °F | 3.76 in. |
| June | 52.6 °F | 75.2 °F | 4.68 in. |
| July | 56.7 °F | 79.2 °F | 3.79 in. |
| August | 54.2 °F | 77.2 °F | 3.82 in. |
| September | 46.5 °F | 69.7 °F | 3.44 in. |
| October | 34.8 °F | 55.5 °F | 3.26 in. |
| November | 23.2 °F | 39.7 °F | 1.86 in. |
| December | 10.5 °F | 27.2 °F | 1.33 in. |
| Annual | 31.3 °F | 52.6 °F | 32.55 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |