Lynn Haven, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 58.8 °F (low) to 78 °F (high). Annual precipitation averages 59.8 Inches. Lynn Haven is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.2 °F | 62.7 °F | 4.8 in. |
| February | 45.1 °F | 65.9 °F | 4.83 in. |
| March | 50.9 °F | 71.6 °F | 5.1 in. |
| April | 57.1 °F | 77.3 °F | 4.09 in. |
| May | 65.0 °F | 84.3 °F | 3.15 in. |
| June | 72.1 °F | 88.5 °F | 5.49 in. |
| July | 74.2 °F | 89.9 °F | 7.0 in. |
| August | 73.9 °F | 89.6 °F | 7.9 in. |
| September | 70.2 °F | 87.8 °F | 5.54 in. |
| October | 60.5 °F | 81.1 °F | 3.6 in. |
| November | 49.7 °F | 72.0 °F | 4.03 in. |
| December | 44.9 °F | 65.1 °F | 4.28 in. |
| Annual | 58.8 °F | 78 °F | 59.81 in. |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |