Madison, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 49 °F (low) to 75.7 °F (high). Annual precipitation averages 22.1 Inches. Madison is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.1 °F | 56.5 °F | 4.72 in. |
| February | 41.4 °F | 61.3 °F | 4.62 in. |
| March | 44.1 °F | 66.4 °F | 3.03 in. |
| April | 46.9 °F | 72.9 °F | 1.33 in. |
| May | 52.2 °F | 81.2 °F | 0.77 in. |
| June | 57.2 °F | 89.2 °F | 0.17 in. |
| July | 59.5 °F | 94.6 °F | 0.0 in. |
| August | 58.5 °F | 93.9 °F | 0.03 in. |
| September | 56.6 °F | 90.3 °F | 0.09 in. |
| October | 50.8 °F | 79.7 °F | 0.85 in. |
| November | 43.2 °F | 65.6 °F | 2.06 in. |
| December | 38.8 °F | 56.6 °F | 4.44 in. |
| Annual | 49 °F | 75.7 °F | 22.11 in. |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |