Lamont, California has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 10.3 °C (low) to 25.2 °C (high). Annual precipitation averages 179.6 Millimeters. Lamont 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. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.4 °C | 14.3 °C | 33.78 mm |
| February | 4.8 °C | 17.7 °C | 32.26 mm |
| March | 7.2 °C | 20.9 °C | 32.77 mm |
| April | 8.7 °C | 23.7 °C | 15.75 mm |
| May | 12.3 °C | 27.8 °C | 7.87 mm |
| June | 15.7 °C | 32.7 °C | 0.76 mm |
| July | 19.2 °C | 36.1 °C | 1.02 mm |
| August | 18.3 °C | 35.6 °C | 0 mm |
| September | 15.6 °C | 32.8 °C | 1.52 mm |
| October | 10.5 °C | 26.9 °C | 7.11 mm |
| November | 5.6 °C | 19.4 °C | 15.75 mm |
| December | 2.5 °C | 14.5 °C | 30.99 mm |
| Annual | 10.3 °C | 25.2 °C | 179.58 mm |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 20-30 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 | BSh - Hot Semi-Arid Climate |