Matthews, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.9 °F (low) to 68.7 °F (high). Annual precipitation averages 50.6 Inches. Matthews is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.7 °F | 43.6 °F | 3.65 in. |
| February | 30.5 °F | 48.5 °F | 3.9 in. |
| March | 38.6 °F | 58.4 °F | 4.72 in. |
| April | 48.4 °F | 69.6 °F | 5.39 in. |
| May | 59.0 °F | 78.8 °F | 5.46 in. |
| June | 67.1 °F | 87.2 °F | 3.92 in. |
| July | 70.4 °F | 89.8 °F | 4.06 in. |
| August | 68.1 °F | 89.0 °F | 3.01 in. |
| September | 60.1 °F | 83.0 °F | 3.54 in. |
| October | 48.1 °F | 71.8 °F | 3.96 in. |
| November | 38.2 °F | 57.9 °F | 4.44 in. |
| December | 30.7 °F | 46.9 °F | 4.54 in. |
| Annual | 48.9 °F | 68.7 °F | 50.59 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |