Lookout, California has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 0.8 °C (low) to 17.5 °C (high). Annual precipitation averages 523 Millimeters. 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 | -5.2 °C | 6.7 °C | 84.33 mm |
| February | -4.3 °C | 8.7 °C | 62.74 mm |
| March | -2.4 °C | 11.6 °C | 58.17 mm |
| April | -0.4 °C | 14.6 °C | 49.28 mm |
| May | 3.1 °C | 19.7 °C | 48.01 mm |
| June | 6.2 °C | 25.1 °C | 17.53 mm |
| July | 9.3 °C | 30.6 °C | 6.1 mm |
| August | 8 °C | 29.9 °C | 4.32 mm |
| September | 4.5 °C | 26.5 °C | 13.21 mm |
| October | 0.2 °C | 19.1 °C | 31.24 mm |
| November | -3.2 °C | 11.1 °C | 57.15 mm |
| December | -5.8 °C | 5.8 °C | 90.93 mm |
| Annual | 0.8 °C | 17.5 °C | 523.01 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |