Rattan, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.6 °F (low) to 74.6 °F (high). Annual precipitation averages 49.3 Inches. Rattan 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 | 30.0 °F | 53.5 °F | 3.08 in. |
| February | 34.3 °F | 58.3 °F | 3.17 in. |
| March | 41.4 °F | 65.9 °F | 4.31 in. |
| April | 49.2 °F | 73.9 °F | 4.49 in. |
| May | 59.2 °F | 81.1 °F | 6.13 in. |
| June | 67.7 °F | 88.8 °F | 4.28 in. |
| July | 70.7 °F | 93.7 °F | 3.37 in. |
| August | 69.3 °F | 94.3 °F | 3.16 in. |
| September | 62.4 °F | 87.8 °F | 4.21 in. |
| October | 50.5 °F | 76.8 °F | 4.7 in. |
| November | 40.3 °F | 65.1 °F | 4.07 in. |
| December | 32.5 °F | 55.6 °F | 4.32 in. |
| Annual | 50.6 °F | 74.6 °F | 49.29 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 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |