Anderson, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.2 °C (low) to 20.7 °C (high). Annual precipitation averages 1177.3 Millimeters. Anderson 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 °C | 8.1 °C | 64.77 mm |
| February | -2.2 °C | 10.7 °C | 58.67 mm |
| March | 2.6 °C | 15.8 °C | 92.71 mm |
| April | 7.6 °C | 21.1 °C | 126.24 mm |
| May | 13.1 °C | 24.8 °C | 167.64 mm |
| June | 18.1 °C | 29.3 °C | 116.59 mm |
| July | 20.3 °C | 32.2 °C | 95 mm |
| August | 19.4 °C | 32 °C | 82.3 mm |
| September | 14.8 °C | 27.8 °C | 106.43 mm |
| October | 8.2 °C | 21.9 °C | 100.58 mm |
| November | 2.4 °C | 15.4 °C | 92.96 mm |
| December | -2.2 °C | 9.7 °C | 73.41 mm |
| Annual | 8.2 °C | 20.7 °C | 1177.3 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Cfa - Humid Subtropical Climate |