Pismo Beach, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 49.7 °F (low) to 68.3 °F (high). Annual precipitation averages 15.8 Inches. Pismo Beach is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 45.7 °F | 64.6 °F | 3.09 in. |
| February | 46.0 °F | 64.5 °F | 3.55 in. |
| March | 46.8 °F | 65.6 °F | 2.86 in. |
| April | 47.6 °F | 68.2 °F | 0.83 in. |
| May | 49.7 °F | 67.8 °F | 0.38 in. |
| June | 52.2 °F | 70.1 °F | 0.1 in. |
| July | 54.8 °F | 70.2 °F | 0.08 in. |
| August | 54.8 °F | 70.9 °F | 0.02 in. |
| September | 53.8 °F | 72.2 °F | 0.08 in. |
| October | 51.8 °F | 72.1 °F | 0.7 in. |
| November | 48.6 °F | 68.8 °F | 1.5 in. |
| December | 45.0 °F | 64.4 °F | 2.64 in. |
| Annual | 49.7 °F | 68.3 °F | 15.83 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |