Elburn, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.7 °F (low) to 58.5 °F (high). Annual precipitation averages 38.4 Inches. Elburn is located in USDA Plant Hardiness Zone 5b. 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 | 13.4 °F | 29.4 °F | 1.89 in. |
| February | 16.7 °F | 33.7 °F | 1.87 in. |
| March | 26.5 °F | 45.8 °F | 2.33 in. |
| April | 36.8 °F | 58.8 °F | 3.7 in. |
| May | 48.4 °F | 70.2 °F | 4.93 in. |
| June | 58.3 °F | 79.9 °F | 4.4 in. |
| July | 62.4 °F | 83.2 °F | 3.84 in. |
| August | 60.4 °F | 81.2 °F | 3.88 in. |
| September | 52.2 °F | 75.1 °F | 3.53 in. |
| October | 40.3 °F | 62.2 °F | 3.36 in. |
| November | 29.6 °F | 47.4 °F | 2.53 in. |
| December | 19.5 °F | 34.8 °F | 2.18 in. |
| Annual | 38.7 °F | 58.5 °F | 38.44 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 5b : -15°F to -10°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 |