Running Springs, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 40.2 °F (low) to 62.1 °F (high). Annual precipitation averages 34.4 Inches. Running Springs is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.7 °F | 49.3 °F | 6.6 in. |
| February | 29.0 °F | 48.7 °F | 8.04 in. |
| March | 30.8 °F | 53.3 °F | 6.07 in. |
| April | 34.0 °F | 56.9 °F | 2.52 in. |
| May | 41.4 °F | 64.2 °F | 1.1 in. |
| June | 47.9 °F | 73.1 °F | 0.13 in. |
| July | 55.7 °F | 78.4 °F | 0.28 in. |
| August | 57.8 °F | 78.9 °F | 0.34 in. |
| September | 50.7 °F | 74.3 °F | 0.45 in. |
| October | 42.2 °F | 63.6 °F | 1.63 in. |
| November | 34.2 °F | 55.9 °F | 2.43 in. |
| December | 28.9 °F | 48.7 °F | 4.76 in. |
| Annual | 40.2 °F | 62.1 °F | 34.35 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |