Rolling Meadows, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.5 °F (low) to 58.8 °F (high). Annual precipitation averages 38 Inches. Rolling Meadows is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.7 °F | 30.9 °F | 2.01 in. |
| February | 18.4 °F | 34.7 °F | 1.96 in. |
| March | 27.9 °F | 45.8 °F | 2.26 in. |
| April | 38.0 °F | 58.1 °F | 3.75 in. |
| May | 48.9 °F | 69.4 °F | 4.61 in. |
| June | 58.9 °F | 79.6 °F | 4.47 in. |
| July | 64.2 °F | 84.0 °F | 3.7 in. |
| August | 62.8 °F | 81.8 °F | 4.09 in. |
| September | 54.7 °F | 75.1 °F | 3.3 in. |
| October | 42.8 °F | 62.2 °F | 3.23 in. |
| November | 31.6 °F | 48.0 °F | 2.43 in. |
| December | 21.7 °F | 36.2 °F | 2.15 in. |
| Annual | 40.5 °F | 58.8 °F | 37.96 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |