Glenview, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.9 °F (low) to 58.8 °F (high). Annual precipitation averages 39.2 Inches. Glenview is located in USDA Plant Hardiness Zone 6a. 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 | 18.2 °F | 31.6 °F | 2.18 in. |
| February | 20.9 °F | 35.6 °F | 2.09 in. |
| March | 29.8 °F | 45.5 °F | 2.24 in. |
| April | 39.7 °F | 57.0 °F | 3.84 in. |
| May | 50.8 °F | 68.8 °F | 4.77 in. |
| June | 60.6 °F | 78.9 °F | 4.42 in. |
| July | 66.6 °F | 83.3 °F | 3.71 in. |
| August | 65.6 °F | 81.6 °F | 4.11 in. |
| September | 58.0 °F | 75.0 °F | 3.54 in. |
| October | 45.7 °F | 62.6 °F | 3.45 in. |
| November | 34.0 °F | 48.1 °F | 2.6 in. |
| December | 24.3 °F | 37.0 °F | 2.28 in. |
| Annual | 42.9 °F | 58.8 °F | 39.23 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |