Happy Camp, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 41 °F (low) to 70.9 °F (high). Annual precipitation averages 51.6 Inches. Happy Camp is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 32.7 °F | 49.2 °F | 9.77 in. |
| February | 33.6 °F | 55.2 °F | 7.44 in. |
| March | 35.3 °F | 61.2 °F | 6.58 in. |
| April | 38.4 °F | 67.4 °F | 3.63 in. |
| May | 43.7 °F | 77.0 °F | 1.77 in. |
| June | 47.8 °F | 85.1 °F | 0.78 in. |
| July | 53.1 °F | 95.4 °F | 0.26 in. |
| August | 51.6 °F | 94.8 °F | 0.28 in. |
| September | 46.5 °F | 88.1 °F | 0.62 in. |
| October | 40.0 °F | 73.1 °F | 2.75 in. |
| November | 36.6 °F | 56.1 °F | 6.75 in. |
| December | 33.0 °F | 47.9 °F | 11.0 in. |
| Annual | 41 °F | 70.9 °F | 51.63 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |