Manchester, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.6 °C (low) to 19.2 °C (high). Annual precipitation averages 1126.5 Millimeters. Manchester 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.4 °C | 4.7 °C | 71.37 mm |
| February | -2.7 °C | 7.7 °C | 62.23 mm |
| March | 2.2 °C | 13.4 °C | 92.2 mm |
| April | 8.1 °C | 19.8 °C | 120.4 mm |
| May | 14 °C | 24.8 °C | 136.4 mm |
| June | 19.1 °C | 29.5 °C | 117.86 mm |
| July | 21.2 °C | 31.4 °C | 103.38 mm |
| August | 20.1 °C | 30.8 °C | 89.92 mm |
| September | 15.7 °C | 27.1 °C | 84.58 mm |
| October | 8.9 °C | 20.7 °C | 85.34 mm |
| November | 2.9 °C | 12.9 °C | 92.71 mm |
| December | -1.8 °C | 7.1 °C | 70.1 mm |
| Annual | 8.6 °C | 19.2 °C | 1126.49 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |