Fowler, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 10 °C (low) to 24.9 °C (high). Annual precipitation averages 302 Millimeters. 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 | 3.4 °C | 13.5 °C | 64.01 mm |
| February | 4.9 °C | 16.7 °C | 55.12 mm |
| March | 6.7 °C | 20.2 °C | 51.05 mm |
| April | 8.4 °C | 23.4 °C | 25.65 mm |
| May | 12.1 °C | 28.2 °C | 12.19 mm |
| June | 15.2 °C | 32.8 °C | 4.06 mm |
| July | 18.2 °C | 36.2 °C | 1.02 mm |
| August | 17.4 °C | 35.8 °C | 0.25 mm |
| September | 14.9 °C | 32.8 °C | 2.54 mm |
| October | 10.6 °C | 26.7 °C | 12.45 mm |
| November | 5.7 °C | 19.1 °C | 24.89 mm |
| December | 2.8 °C | 13.6 °C | 48.77 mm |
| Annual | 10 °C | 24.9 °C | 302 mm |
| 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 : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |