Clifton Hill, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.5 °C (low) to 17.9 °C (high). Annual precipitation averages 1038.9 Millimeters. Clifton Hill is located in USDA Plant Hardiness Zone 6a. 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 | -7.3 °C | 2.7 °C | 40.13 mm |
| February | -5.2 °C | 5.7 °C | 49.53 mm |
| March | 0.3 °C | 12 °C | 72.14 mm |
| April | 6.1 °C | 18.3 °C | 107.19 mm |
| May | 12.2 °C | 23.5 °C | 134.37 mm |
| June | 17.5 °C | 28.6 °C | 130.56 mm |
| July | 19.6 °C | 30.7 °C | 118.11 mm |
| August | 18.3 °C | 30.1 °C | 94.49 mm |
| September | 13.4 °C | 26.2 °C | 96.52 mm |
| October | 6.9 °C | 19.7 °C | 83.57 mm |
| November | 0.8 °C | 11.9 °C | 64.77 mm |
| December | -4.5 °C | 5.2 °C | 47.5 mm |
| Annual | 6.5 °C | 17.9 °C | 1038.88 mm |
| 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |