Union Park, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 63.1 °F (low) to 82.4 °F (high). Annual precipitation averages 55.5 Inches. Union Park is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 49.3 °F | 70.7 °F | 2.86 in. |
| February | 51.9 °F | 73.5 °F | 2.37 in. |
| March | 55.9 °F | 77.8 °F | 3.55 in. |
| April | 61.2 °F | 82.7 °F | 2.87 in. |
| May | 67.0 °F | 87.5 °F | 3.99 in. |
| June | 72.3 °F | 90.1 °F | 8.34 in. |
| July | 74.0 °F | 91.5 °F | 7.67 in. |
| August | 74.4 °F | 91.3 °F | 8.31 in. |
| September | 73.0 °F | 89.1 °F | 6.92 in. |
| October | 66.8 °F | 84.4 °F | 3.84 in. |
| November | 58.4 °F | 77.7 °F | 2.1 in. |
| December | 52.6 °F | 72.9 °F | 2.68 in. |
| Annual | 63.1 °F | 82.4 °F | 55.5 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |