Lake Elsinore, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 9.9 °C (low) to 26.8 °C (high). Annual precipitation averages 319 Millimeters. Lake Elsinore is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.8 °C | 19.4 °C | 83.82 mm |
| February | 5.1 °C | 19.6 °C | 78.23 mm |
| March | 6.6 °C | 21.6 °C | 43.69 mm |
| April | 8 °C | 24.4 °C | 13.97 mm |
| May | 11.1 °C | 27.6 °C | 5.84 mm |
| June | 13.2 °C | 31.8 °C | 0.51 mm |
| July | 16.3 °C | 35.6 °C | 2.29 mm |
| August | 16.6 °C | 36.4 °C | 1.27 mm |
| September | 14.8 °C | 34 °C | 2.79 mm |
| October | 10.9 °C | 28.6 °C | 13.46 mm |
| November | 6.7 °C | 23.6 °C | 16.51 mm |
| December | 4.1 °C | 19.1 °C | 56.64 mm |
| Annual | 9.9 °C | 26.8 °C | 319.02 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| 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 | BSk - Cold Semi-Arid Climate |