Hat Creek, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 34.3 °F (low) to 65.9 °F (high). Annual precipitation averages 24.5 Inches. Hat Creek is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.4 °F | 45.9 °F | 3.82 in. |
| February | 25.4 °F | 49.8 °F | 3.57 in. |
| March | 28.7 °F | 55.5 °F | 3.11 in. |
| April | 32.1 °F | 61.3 °F | 2.24 in. |
| May | 38.7 °F | 70.7 °F | 1.94 in. |
| June | 44.5 °F | 80.2 °F | 0.78 in. |
| July | 49.4 °F | 89.5 °F | 0.17 in. |
| August | 46.1 °F | 88.5 °F | 0.19 in. |
| September | 40.5 °F | 82.3 °F | 0.44 in. |
| October | 32.4 °F | 69.0 °F | 1.45 in. |
| November | 27.1 °F | 53.5 °F | 2.69 in. |
| December | 23.2 °F | 44.2 °F | 4.06 in. |
| Annual | 34.3 °F | 65.9 °F | 24.46 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |