Paramount, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 13 °C (low) to 23.6 °C (high). Annual precipitation averages 335 Millimeters. Paramount is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.4 °C | 19.6 °C | 79.25 mm |
| February | 9.2 °C | 19.4 °C | 86.61 mm |
| March | 10.5 °C | 20.1 °C | 52.32 mm |
| April | 11.7 °C | 22.2 °C | 17.53 mm |
| May | 14 °C | 23.3 °C | 5.59 mm |
| June | 15.9 °C | 25.2 °C | 1.78 mm |
| July | 17.7 °C | 28 °C | 1.27 mm |
| August | 18.1 °C | 28.9 °C | 0.25 mm |
| September | 17.2 °C | 28.5 °C | 2.79 mm |
| October | 14.7 °C | 26.1 °C | 12.19 mm |
| November | 10.9 °C | 22.3 °C | 20.07 mm |
| December | 8.1 °C | 19.4 °C | 55.37 mm |
| Annual | 13 °C | 23.6 °C | 335.02 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 1.7°C to 4.4°C |
| Plant Hardiness Zone - 2012 | Zone 10b : 1.7°C to 4.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |