Fowler, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 50.1 °F (low) to 76.8 °F (high). Annual precipitation averages 11.9 Inches. Fowler is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.2 °F | 56.3 °F | 2.52 in. |
| February | 40.8 °F | 62.1 °F | 2.17 in. |
| March | 44.0 °F | 68.3 °F | 2.01 in. |
| April | 47.1 °F | 74.2 °F | 1.01 in. |
| May | 53.7 °F | 82.7 °F | 0.48 in. |
| June | 59.4 °F | 91.0 °F | 0.16 in. |
| July | 64.8 °F | 97.1 °F | 0.04 in. |
| August | 63.4 °F | 96.4 °F | 0.01 in. |
| September | 58.9 °F | 91.0 °F | 0.1 in. |
| October | 51.1 °F | 80.1 °F | 0.49 in. |
| November | 42.3 °F | 66.3 °F | 0.98 in. |
| December | 37.0 °F | 56.4 °F | 1.92 in. |
| Annual | 50.1 °F | 76.8 °F | 11.89 in. |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |