Kathleen, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 62.7 °F (low) to 83.3 °F (high). Annual precipitation averages 54.7 Inches. Kathleen is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 49.2 °F | 71.9 °F | 3.0 in. |
| February | 51.9 °F | 75.1 °F | 2.36 in. |
| March | 55.4 °F | 79.1 °F | 2.86 in. |
| April | 60.9 °F | 83.8 °F | 2.89 in. |
| May | 66.8 °F | 88.5 °F | 3.5 in. |
| June | 72.0 °F | 90.8 °F | 8.75 in. |
| July | 73.7 °F | 91.5 °F | 8.46 in. |
| August | 73.8 °F | 91.6 °F | 8.37 in. |
| September | 72.4 °F | 90.0 °F | 7.13 in. |
| October | 66.2 °F | 85.1 °F | 2.83 in. |
| November | 57.4 °F | 78.6 °F | 1.89 in. |
| December | 52.2 °F | 74.0 °F | 2.64 in. |
| Annual | 62.7 °F | 83.3 °F | 54.68 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |