Overland, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 9.3 °C (low) to 19.2 °C (high). Annual precipitation averages 1097.8 Millimeters. Overland is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.9 °C | 4.6 °C | 67.82 mm |
| February | -2.2 °C | 7.7 °C | 56.13 mm |
| March | 2.7 °C | 13.5 °C | 88.9 mm |
| April | 8.8 °C | 19.8 °C | 120.9 mm |
| May | 14.8 °C | 24.8 °C | 129.54 mm |
| June | 19.9 °C | 29.7 °C | 116.84 mm |
| July | 22.1 °C | 31.6 °C | 100.58 mm |
| August | 21 °C | 30.9 °C | 91.69 mm |
| September | 16.4 °C | 27.1 °C | 82.04 mm |
| October | 9.9 °C | 20.7 °C | 84.07 mm |
| November | 3.4 °C | 12.8 °C | 89.41 mm |
| December | -1.3 °C | 7.1 °C | 69.85 mm |
| Annual | 9.3 °C | 19.2 °C | 1097.77 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |