Stevinson, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 8.7 °C (low) to 24.1 °C (high). Annual precipitation averages 297.7 Millimeters. Stevinson is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3 °C | 13.1 °C | 65.79 mm |
| February | 4.3 °C | 16.4 °C | 56.39 mm |
| March | 6 °C | 19.5 °C | 44.7 mm |
| April | 7.5 °C | 22.7 °C | 21.59 mm |
| May | 10.4 °C | 27.4 °C | 12.7 mm |
| June | 13.2 °C | 31.6 °C | 2.79 mm |
| July | 15.4 °C | 34.6 °C | 0 mm |
| August | 14.8 °C | 33.9 °C | 0 mm |
| September | 13.1 °C | 31.7 °C | 1.27 mm |
| October | 9.6 °C | 26.3 °C | 14.99 mm |
| November | 5.1 °C | 18.7 °C | 25.15 mm |
| December | 2.4 °C | 13.3 °C | 52.32 mm |
| Annual | 8.7 °C | 24.1 °C | 297.69 mm |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |