Altamonte Springs, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 62.5 °F (low) to 82.4 °F (high). Annual precipitation averages 56.1 Inches. Altamonte Springs is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 48.4 °F | 70.4 °F | 2.95 in. |
| February | 51.1 °F | 73.3 °F | 2.47 in. |
| March | 55.1 °F | 77.7 °F | 3.48 in. |
| April | 60.5 °F | 82.8 °F | 3.04 in. |
| May | 66.6 °F | 87.7 °F | 3.88 in. |
| June | 72.0 °F | 90.4 °F | 8.26 in. |
| July | 73.7 °F | 91.7 °F | 7.66 in. |
| August | 74.1 °F | 91.5 °F | 8.3 in. |
| September | 72.4 °F | 89.2 °F | 7.28 in. |
| October | 66.1 °F | 84.3 °F | 3.94 in. |
| November | 57.6 °F | 77.5 °F | 2.23 in. |
| December | 51.9 °F | 72.7 °F | 2.6 in. |
| Annual | 62.5 °F | 82.4 °F | 56.09 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 |