River Pines, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 46.1 °F (low) to 70 °F (high). Annual precipitation averages 35.4 Inches. River Pines is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.2 °F | 54.1 °F | 6.37 in. |
| February | 37.5 °F | 56.5 °F | 6.06 in. |
| March | 39.6 °F | 60.5 °F | 5.47 in. |
| April | 41.6 °F | 63.6 °F | 3.39 in. |
| May | 47.2 °F | 72.3 °F | 2.05 in. |
| June | 53.2 °F | 82.0 °F | 0.34 in. |
| July | 59.1 °F | 89.4 °F | 0.0 in. |
| August | 59.1 °F | 88.8 °F | 0.04 in. |
| September | 55.5 °F | 83.7 °F | 0.27 in. |
| October | 48.3 °F | 73.8 °F | 1.87 in. |
| November | 40.4 °F | 61.8 °F | 3.5 in. |
| December | 36.0 °F | 53.1 °F | 6.06 in. |
| Annual | 46.1 °F | 70 °F | 35.42 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |