West Point, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.4 °F (low) to 62.5 °F (high). Annual precipitation averages 39.9 Inches. West Point is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.0 °F | 33.9 °F | 1.76 in. |
| February | 20.6 °F | 38.7 °F | 1.95 in. |
| March | 30.5 °F | 50.8 °F | 2.54 in. |
| April | 41.4 °F | 63.6 °F | 4.04 in. |
| May | 52.9 °F | 73.6 °F | 5.3 in. |
| June | 62.6 °F | 82.8 °F | 4.91 in. |
| July | 66.0 °F | 86.5 °F | 4.1 in. |
| August | 63.8 °F | 84.8 °F | 3.88 in. |
| September | 55.3 °F | 78.9 °F | 3.63 in. |
| October | 43.7 °F | 66.0 °F | 3.22 in. |
| November | 32.3 °F | 51.4 °F | 2.63 in. |
| December | 22.5 °F | 38.8 °F | 1.98 in. |
| Annual | 42.4 °F | 62.5 °F | 39.94 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |