Silo, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 74 °F (high). Annual precipitation averages 43.8 Inches. Silo is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.0 °F | 52.8 °F | 2.36 in. |
| February | 34.5 °F | 56.6 °F | 2.5 in. |
| March | 42.3 °F | 65.2 °F | 3.73 in. |
| April | 50.1 °F | 73.1 °F | 3.99 in. |
| May | 59.9 °F | 80.5 °F | 5.93 in. |
| June | 68.5 °F | 89.0 °F | 4.62 in. |
| July | 72.1 °F | 94.1 °F | 3.12 in. |
| August | 71.4 °F | 94.4 °F | 2.75 in. |
| September | 64.3 °F | 87.1 °F | 3.94 in. |
| October | 52.6 °F | 76.3 °F | 4.3 in. |
| November | 41.9 °F | 64.6 °F | 3.27 in. |
| December | 33.1 °F | 54.4 °F | 3.24 in. |
| Annual | 51.8 °F | 74 °F | 43.75 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |