Annapolis, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.3 °F (low) to 68 °F (high). Annual precipitation averages 47.7 Inches. Annapolis is located in USDA Plant Hardiness Zone 6b. 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 | 22.0 °F | 43.7 °F | 2.9 in. |
| February | 24.5 °F | 49.0 °F | 3.05 in. |
| March | 33.0 °F | 59.0 °F | 4.0 in. |
| April | 42.5 °F | 70.6 °F | 5.77 in. |
| May | 52.7 °F | 77.1 °F | 5.49 in. |
| June | 60.7 °F | 84.7 °F | 4.22 in. |
| July | 65.4 °F | 88.1 °F | 3.85 in. |
| August | 63.2 °F | 88.0 °F | 3.35 in. |
| September | 55.1 °F | 81.4 °F | 3.8 in. |
| October | 42.5 °F | 70.2 °F | 3.44 in. |
| November | 32.6 °F | 57.3 °F | 4.27 in. |
| December | 25.2 °F | 46.5 °F | 3.53 in. |
| Annual | 43.3 °F | 68 °F | 47.67 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |