Alex, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.7 °F (low) to 73.7 °F (high). Annual precipitation averages 35 Inches. Alex 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 | 26.5 °F | 51.6 °F | 1.41 in. |
| February | 30.3 °F | 55.8 °F | 1.61 in. |
| March | 39.0 °F | 65.0 °F | 2.6 in. |
| April | 47.2 °F | 73.2 °F | 3.52 in. |
| May | 57.9 °F | 80.7 °F | 5.08 in. |
| June | 66.8 °F | 89.4 °F | 4.26 in. |
| July | 70.6 °F | 94.8 °F | 2.74 in. |
| August | 69.2 °F | 95.0 °F | 2.9 in. |
| September | 61.2 °F | 86.6 °F | 3.53 in. |
| October | 49.0 °F | 75.5 °F | 3.32 in. |
| November | 37.7 °F | 63.3 °F | 2.05 in. |
| December | 29.0 °F | 52.9 °F | 1.93 in. |
| Annual | 48.7 °F | 73.7 °F | 34.95 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 |