Menlo, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.5 °C (low) to 18.8 °C (high). Annual precipitation averages 533.7 Millimeters. 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 | -8.7 °C | 5.7 °C | 8.89 mm |
| February | -7.4 °C | 7.5 °C | 12.95 mm |
| March | -3 °C | 13.2 °C | 24.64 mm |
| April | 1.8 °C | 17.8 °C | 50.04 mm |
| May | 8.2 °C | 23.3 °C | 78.74 mm |
| June | 14.2 °C | 29.7 °C | 70.1 mm |
| July | 17.2 °C | 32.2 °C | 97.28 mm |
| August | 16.1 °C | 30.8 °C | 80.52 mm |
| September | 11 °C | 26.8 °C | 40.13 mm |
| October | 3.6 °C | 19.7 °C | 37.85 mm |
| November | -3.1 °C | 12.3 °C | 17.53 mm |
| December | -7.7 °C | 6.4 °C | 14.99 mm |
| Annual | 3.5 °C | 18.8 °C | 533.66 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |