McLouth, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.6 °F (low) to 64.9 °F (high). Annual precipitation averages 38.6 Inches. McLouth is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.7 °F | 38.2 °F | 1.05 in. |
| February | 23.8 °F | 43.6 °F | 1.37 in. |
| March | 33.4 °F | 55.2 °F | 2.39 in. |
| April | 43.9 °F | 65.4 °F | 3.75 in. |
| May | 53.9 °F | 74.4 °F | 5.36 in. |
| June | 63.6 °F | 83.6 °F | 5.3 in. |
| July | 68.3 °F | 88.3 °F | 4.44 in. |
| August | 66.1 °F | 87.6 °F | 4.47 in. |
| September | 57.6 °F | 79.3 °F | 3.87 in. |
| October | 46.4 °F | 67.7 °F | 3.11 in. |
| November | 34.2 °F | 53.7 °F | 1.99 in. |
| December | 24.0 °F | 41.6 °F | 1.52 in. |
| Annual | 44.6 °F | 64.9 °F | 38.62 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |