Junction City, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52 °F (low) to 75.5 °F (high). Annual precipitation averages 57 Inches. Junction City is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.2 °F | 55.6 °F | 5.33 in. |
| February | 36.2 °F | 59.8 °F | 4.89 in. |
| March | 43.4 °F | 68.0 °F | 5.66 in. |
| April | 51.0 °F | 75.8 °F | 5.8 in. |
| May | 60.5 °F | 82.8 °F | 4.89 in. |
| June | 67.9 °F | 89.5 °F | 4.4 in. |
| July | 71.2 °F | 92.7 °F | 4.01 in. |
| August | 69.9 °F | 92.9 °F | 3.58 in. |
| September | 63.2 °F | 87.7 °F | 3.7 in. |
| October | 51.1 °F | 77.5 °F | 4.7 in. |
| November | 41.2 °F | 66.0 °F | 4.4 in. |
| December | 35.4 °F | 57.7 °F | 5.65 in. |
| Annual | 52 °F | 75.5 °F | 57.01 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |