Menlo, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.3 °F (low) to 65.8 °F (high). Annual precipitation averages 21 Inches. Menlo is located in USDA Plant Hardiness Zone 6a. 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 | 16.4 °F | 42.3 °F | 0.35 in. |
| February | 18.7 °F | 45.5 °F | 0.51 in. |
| March | 26.6 °F | 55.8 °F | 0.97 in. |
| April | 35.3 °F | 64.0 °F | 1.97 in. |
| May | 46.8 °F | 73.9 °F | 3.1 in. |
| June | 57.6 °F | 85.4 °F | 2.76 in. |
| July | 63.0 °F | 90.0 °F | 3.83 in. |
| August | 61.0 °F | 87.5 °F | 3.17 in. |
| September | 51.8 °F | 80.2 °F | 1.58 in. |
| October | 38.4 °F | 67.5 °F | 1.49 in. |
| November | 26.4 °F | 54.2 °F | 0.69 in. |
| December | 18.1 °F | 43.5 °F | 0.59 in. |
| Annual | 38.3 °F | 65.8 °F | 21.01 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |