Los Banos, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 48.7 °F (low) to 75.5 °F (high). Annual precipitation averages 9.4 Inches. Los Banos is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.0 °F | 55.8 °F | 2.02 in. |
| February | 40.6 °F | 61.8 °F | 1.83 in. |
| March | 43.8 °F | 67.3 °F | 1.33 in. |
| April | 46.4 °F | 73.0 °F | 0.65 in. |
| May | 51.8 °F | 81.2 °F | 0.47 in. |
| June | 56.7 °F | 88.8 °F | 0.08 in. |
| July | 60.7 °F | 94.2 °F | 0.01 in. |
| August | 59.8 °F | 93.3 °F | 0.01 in. |
| September | 56.9 °F | 89.2 °F | 0.05 in. |
| October | 50.3 °F | 79.2 °F | 0.47 in. |
| November | 42.0 °F | 65.9 °F | 0.84 in. |
| December | 36.8 °F | 56.1 °F | 1.62 in. |
| Annual | 48.7 °F | 75.5 °F | 9.38 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |