Guadalupe, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 48.5 °F (low) to 66.2 °F (high). Annual precipitation averages 14.6 Inches. Guadalupe is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 43.2 °F | 63.9 °F | 2.97 in. |
| February | 44.2 °F | 63.8 °F | 3.34 in. |
| March | 45.6 °F | 64.8 °F | 2.73 in. |
| April | 46.3 °F | 64.4 °F | 0.84 in. |
| May | 49.1 °F | 64.8 °F | 0.35 in. |
| June | 51.7 °F | 66.2 °F | 0.06 in. |
| July | 54.9 °F | 67.0 °F | 0.05 in. |
| August | 54.9 °F | 68.1 °F | 0.02 in. |
| September | 53.5 °F | 69.7 °F | 0.07 in. |
| October | 50.3 °F | 70.2 °F | 0.69 in. |
| November | 46.3 °F | 68.2 °F | 1.25 in. |
| December | 42.0 °F | 63.4 °F | 2.25 in. |
| Annual | 48.5 °F | 66.2 °F | 14.62 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |