La Porte, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 4.1 °C (low) to 16.7 °C (high). Annual precipitation averages 2218.7 Millimeters. La Porte is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.4 °C | 8.1 °C | 364.74 mm |
| February | -1.7 °C | 8.6 °C | 333.25 mm |
| March | -0.8 °C | 10.6 °C | 309.12 mm |
| April | 0.8 °C | 13.5 °C | 204.22 mm |
| May | 5.1 °C | 18.2 °C | 124.71 mm |
| June | 9.2 °C | 23.3 °C | 37.85 mm |
| July | 12.7 °C | 28.1 °C | 2.03 mm |
| August | 12.2 °C | 27.9 °C | 6.1 mm |
| September | 9.1 °C | 25.2 °C | 21.59 mm |
| October | 5.1 °C | 18.8 °C | 133.6 mm |
| November | 1 °C | 11.4 °C | 248.41 mm |
| December | -1.6 °C | 7.1 °C | 433.07 mm |
| Annual | 4.1 °C | 16.7 °C | 2218.69 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |