Saranap, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 48.2 °F (low) to 71.8 °F (high). Annual precipitation averages 25.7 Inches. Saranap is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 11 - Jan. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 40.2 °F | 56.9 °F | 5.25 in. |
| February | 41.7 °F | 60.9 °F | 5.21 in. |
| March | 43.9 °F | 65.2 °F | 3.73 in. |
| April | 46.3 °F | 69.6 °F | 1.68 in. |
| May | 50.3 °F | 74.1 °F | 0.82 in. |
| June | 53.8 °F | 81.1 °F | 0.11 in. |
| July | 56.1 °F | 85.5 °F | 0.01 in. |
| August | 56.3 °F | 85.6 °F | 0.04 in. |
| September | 54.9 °F | 84.4 °F | 0.08 in. |
| October | 50.7 °F | 75.9 °F | 1.19 in. |
| November | 43.8 °F | 64.9 °F | 2.51 in. |
| December | 39.8 °F | 57.0 °F | 5.04 in. |
| Annual | 48.2 °F | 71.8 °F | 25.67 in. |
| Average First Frost Date | Jan. 11 - Jan. 20 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |