Lookout, California has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 33.5 °F (low) to 63.4 °F (high). Annual precipitation averages 20.6 Inches. Lookout is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.6 °F | 44.1 °F | 3.32 in. |
| February | 24.3 °F | 47.6 °F | 2.47 in. |
| March | 27.7 °F | 52.9 °F | 2.29 in. |
| April | 31.3 °F | 58.2 °F | 1.94 in. |
| May | 37.5 °F | 67.5 °F | 1.89 in. |
| June | 43.1 °F | 77.1 °F | 0.69 in. |
| July | 48.7 °F | 87.0 °F | 0.24 in. |
| August | 46.4 °F | 85.9 °F | 0.17 in. |
| September | 40.1 °F | 79.7 °F | 0.52 in. |
| October | 32.4 °F | 66.4 °F | 1.23 in. |
| November | 26.2 °F | 52.0 °F | 2.25 in. |
| December | 21.6 °F | 42.5 °F | 3.58 in. |
| Annual | 33.5 °F | 63.4 °F | 20.59 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |