Lower Grand Lagoon, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 61.2 °F (low) to 75.9 °F (high). Annual precipitation averages 60.4 Inches. Lower Grand Lagoon is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 44.5 °F | 61.2 °F | 4.36 in. |
| February | 47.5 °F | 63.8 °F | 4.52 in. |
| March | 53.2 °F | 68.6 °F | 5.16 in. |
| April | 60.2 °F | 74.4 °F | 4.44 in. |
| May | 67.7 °F | 81.0 °F | 2.71 in. |
| June | 74.3 °F | 86.1 °F | 5.5 in. |
| July | 76.1 °F | 87.7 °F | 6.99 in. |
| August | 75.7 °F | 87.6 °F | 7.69 in. |
| September | 72.1 °F | 85.9 °F | 5.75 in. |
| October | 63.2 °F | 79.4 °F | 4.08 in. |
| November | 52.4 °F | 70.6 °F | 4.86 in. |
| December | 47.3 °F | 63.9 °F | 4.38 in. |
| Annual | 61.2 °F | 75.9 °F | 60.44 in. |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |