Templeton, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 42.8 °F (low) to 75.6 °F (high). Annual precipitation averages 17.6 Inches. Templeton 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 Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.0 °F | 61.7 °F | 4.08 in. |
| February | 36.8 °F | 63.5 °F | 3.77 in. |
| March | 39.2 °F | 67.1 °F | 3.11 in. |
| April | 40.6 °F | 72.6 °F | 1.0 in. |
| May | 44.8 °F | 77.6 °F | 0.42 in. |
| June | 48.9 °F | 85.3 °F | 0.07 in. |
| July | 52.5 °F | 88.9 °F | 0.06 in. |
| August | 51.8 °F | 90.7 °F | 0.02 in. |
| September | 49.1 °F | 88.2 °F | 0.09 in. |
| October | 43.6 °F | 80.7 °F | 0.7 in. |
| November | 37.4 °F | 69.2 °F | 1.34 in. |
| December | 33.7 °F | 61.2 °F | 2.96 in. |
| Annual | 42.8 °F | 75.6 °F | 17.62 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 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 | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |