Litchfield, California has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 2 °C (low) to 18.5 °C (high). Annual precipitation averages 264.4 Millimeters. Litchfield is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.4 °C | 6.4 °C | 41.91 mm |
| February | -3.6 °C | 9 °C | 34.54 mm |
| March | -1.2 °C | 12.6 °C | 27.43 mm |
| April | 0.6 °C | 16.4 °C | 14.22 mm |
| May | 4.5 °C | 21.6 °C | 24.89 mm |
| June | 7.6 °C | 27.1 °C | 18.29 mm |
| July | 11.2 °C | 32.1 °C | 8.89 mm |
| August | 10.3 °C | 31.6 °C | 3.56 mm |
| September | 6.4 °C | 27.6 °C | 5.08 mm |
| October | 1.8 °C | 19.9 °C | 17.27 mm |
| November | -3 °C | 11.5 °C | 24.64 mm |
| December | -5.8 °C | 5.9 °C | 43.69 mm |
| Annual | 2 °C | 18.5 °C | 264.41 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |