Lynn Haven, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.9 °C (low) to 25.6 °C (high). Annual precipitation averages 1519.2 Millimeters. 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 | 5.7 °C | 17.1 °C | 121.92 mm |
| February | 7.3 °C | 18.8 °C | 122.68 mm |
| March | 10.5 °C | 22 °C | 129.54 mm |
| April | 13.9 °C | 25.2 °C | 103.89 mm |
| May | 18.3 °C | 29.1 °C | 80.01 mm |
| June | 22.3 °C | 31.4 °C | 139.45 mm |
| July | 23.4 °C | 32.2 °C | 177.8 mm |
| August | 23.3 °C | 32 °C | 200.66 mm |
| September | 21.2 °C | 31 °C | 140.72 mm |
| October | 15.8 °C | 27.3 °C | 91.44 mm |
| November | 9.8 °C | 22.2 °C | 102.36 mm |
| December | 7.2 °C | 18.4 °C | 108.71 mm |
| Annual | 14.9 °C | 25.6 °C | 1519.18 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |