Cedar Valley, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 22.2 °C (high). Annual precipitation averages 910.6 Millimeters. Cedar Valley 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 | -3.7 °C | 9.5 °C | 29.46 mm |
| February | -1.9 °C | 11.4 °C | 38.61 mm |
| March | 2.8 °C | 16.9 °C | 65.79 mm |
| April | 7.8 °C | 21.9 °C | 102.11 mm |
| May | 13.7 °C | 26.5 °C | 124.97 mm |
| June | 19.3 °C | 31.4 °C | 121.67 mm |
| July | 21.8 °C | 34.7 °C | 82.3 mm |
| August | 20.9 °C | 34.2 °C | 86.36 mm |
| September | 16.5 °C | 29.9 °C | 80.77 mm |
| October | 9.7 °C | 23.2 °C | 85.34 mm |
| November | 3 °C | 16.3 °C | 51.05 mm |
| December | -2.2 °C | 10.2 °C | 42.16 mm |
| Annual | 9 °C | 22.2 °C | 910.59 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |