Strasburg, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.8 °F (low) to 64.1 °F (high). Annual precipitation averages 41.9 Inches. Strasburg is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.4 °F | 36.4 °F | 2.61 in. |
| February | 23.5 °F | 41.3 °F | 2.23 in. |
| March | 32.5 °F | 52.3 °F | 3.05 in. |
| April | 42.9 °F | 65.1 °F | 4.66 in. |
| May | 54.1 °F | 75.1 °F | 4.65 in. |
| June | 62.9 °F | 83.9 °F | 4.8 in. |
| July | 65.8 °F | 86.9 °F | 4.12 in. |
| August | 63.5 °F | 85.7 °F | 3.0 in. |
| September | 55.5 °F | 80.5 °F | 3.04 in. |
| October | 44.4 °F | 68.2 °F | 3.41 in. |
| November | 33.9 °F | 53.0 °F | 3.59 in. |
| December | 25.8 °F | 41.2 °F | 2.69 in. |
| Annual | 43.8 °F | 64.1 °F | 41.85 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |