Mount Horeb, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.9 °F (low) to 55.9 °F (high). Annual precipitation averages 39.2 Inches. Mount Horeb 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 | 10.9 °F | 26.1 °F | 1.53 in. |
| February | 14.7 °F | 30.6 °F | 1.55 in. |
| March | 25.2 °F | 42.5 °F | 2.1 in. |
| April | 36.2 °F | 56.3 °F | 3.95 in. |
| May | 48.2 °F | 68.1 °F | 4.58 in. |
| June | 57.8 °F | 77.5 °F | 5.88 in. |
| July | 62.3 °F | 81.2 °F | 4.5 in. |
| August | 60.8 °F | 79.6 °F | 4.46 in. |
| September | 52.1 °F | 72.5 °F | 3.69 in. |
| October | 40.4 °F | 59.9 °F | 2.92 in. |
| November | 28.9 °F | 44.7 °F | 2.28 in. |
| December | 17.8 °F | 31.8 °F | 1.76 in. |
| Annual | 37.9 °F | 55.9 °F | 39.2 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 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |