Dickson, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.6 °C (low) to 23.2 °C (high). Annual precipitation averages 1003.3 Millimeters. Dickson is located in USDA Plant Hardiness Zone 8a. 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 | -1.2 °C | 11.4 °C | 49.53 mm |
| February | 0.8 °C | 13.8 °C | 57.15 mm |
| March | 5.4 °C | 18.4 °C | 79.25 mm |
| April | 9.8 °C | 22.9 °C | 89.15 mm |
| May | 15.3 °C | 26.8 °C | 144.02 mm |
| June | 20.2 °C | 31.4 °C | 113.03 mm |
| July | 22.4 °C | 34.3 °C | 68.83 mm |
| August | 21.8 °C | 34.6 °C | 68.07 mm |
| September | 17.4 °C | 30.4 °C | 101.09 mm |
| October | 10.8 °C | 24.4 °C | 102.62 mm |
| November | 4.9 °C | 18.1 °C | 63.75 mm |
| December | 0 °C | 12.4 °C | 66.8 mm |
| Annual | 10.6 °C | 23.2 °C | 1003.29 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |