River Pines, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 7.9 °C (low) to 21.1 °C (high). Annual precipitation averages 899.7 Millimeters. 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 | 2.3 °C | 12.3 °C | 161.8 mm |
| February | 3.1 °C | 13.6 °C | 153.92 mm |
| March | 4.2 °C | 15.8 °C | 138.94 mm |
| April | 5.3 °C | 17.6 °C | 86.11 mm |
| May | 8.4 °C | 22.4 °C | 52.07 mm |
| June | 11.8 °C | 27.8 °C | 8.64 mm |
| July | 15.1 °C | 31.9 °C | 0 mm |
| August | 15.1 °C | 31.6 °C | 1.02 mm |
| September | 13.1 °C | 28.7 °C | 6.86 mm |
| October | 9.1 °C | 23.2 °C | 47.5 mm |
| November | 4.7 °C | 16.6 °C | 88.9 mm |
| December | 2.2 °C | 11.7 °C | 153.92 mm |
| Annual | 7.9 °C | 21.1 °C | 899.68 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |