Dudley, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.2 °C (low) to 20.3 °C (high). Annual precipitation averages 1293.9 Millimeters. Dudley 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 | -2.9 °C | 6.3 °C | 91.44 mm |
| February | -1.2 °C | 9.2 °C | 95 mm |
| March | 3.3 °C | 14.6 °C | 118.87 mm |
| April | 8.8 °C | 20.9 °C | 145.29 mm |
| May | 14.6 °C | 25.9 °C | 131.57 mm |
| June | 19.4 °C | 30.6 °C | 92.71 mm |
| July | 21.4 °C | 32 °C | 114.05 mm |
| August | 20.2 °C | 31.5 °C | 80.01 mm |
| September | 15.8 °C | 28.2 °C | 87.88 mm |
| October | 9.1 °C | 22.2 °C | 102.87 mm |
| November | 3.2 °C | 14.3 °C | 118.62 mm |
| December | -1.1 °C | 8.1 °C | 115.57 mm |
| Annual | 9.2 °C | 20.3 °C | 1293.88 mm |
| 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 : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |