Lower Lake, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 7 °C (low) to 22.3 °C (high). Annual precipitation averages 787.4 Millimeters. Lower Lake is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.8 °C | 13.4 °C | 168.4 mm |
| February | 2.3 °C | 14.9 °C | 160.78 mm |
| March | 3.6 °C | 17.1 °C | 104.65 mm |
| April | 5.1 °C | 19.4 °C | 48.26 mm |
| May | 8.1 °C | 23.7 °C | 30.48 mm |
| June | 11.6 °C | 28.8 °C | 5.59 mm |
| July | 14.2 °C | 33.2 °C | 0 mm |
| August | 13.5 °C | 32.7 °C | 0.51 mm |
| September | 11.1 °C | 30.1 °C | 2.79 mm |
| October | 7.4 °C | 24.2 °C | 33.02 mm |
| November | 3.4 °C | 17.3 °C | 72.14 mm |
| December | 1.6 °C | 13.2 °C | 160.78 mm |
| Annual | 7 °C | 22.3 °C | 787.4 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |