Lyons, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.7 °F (low) to 57.3 °F (high). Annual precipitation averages 37 Inches. Lyons 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 | 13.0 °F | 28.7 °F | 1.86 in. |
| February | 15.8 °F | 32.6 °F | 1.81 in. |
| March | 25.0 °F | 43.7 °F | 2.16 in. |
| April | 35.5 °F | 56.8 °F | 3.72 in. |
| May | 46.4 °F | 68.4 °F | 4.2 in. |
| June | 56.4 °F | 78.4 °F | 4.85 in. |
| July | 60.9 °F | 82.3 °F | 3.68 in. |
| August | 59.1 °F | 80.8 °F | 3.77 in. |
| September | 51.3 °F | 74.3 °F | 3.53 in. |
| October | 40.0 °F | 60.8 °F | 2.95 in. |
| November | 29.4 °F | 46.4 °F | 2.44 in. |
| December | 19.3 °F | 34.0 °F | 2.06 in. |
| Annual | 37.7 °F | 57.3 °F | 37.03 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |