New Bedford, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.9 °F (low) to 59.7 °F (high). Annual precipitation averages 38 Inches. New Bedford is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.9 °F | 30.1 °F | 1.73 in. |
| February | 17.7 °F | 34.7 °F | 1.74 in. |
| March | 27.8 °F | 47.2 °F | 2.39 in. |
| April | 38.6 °F | 60.9 °F | 3.61 in. |
| May | 50.4 °F | 72.0 °F | 4.83 in. |
| June | 60.2 °F | 81.0 °F | 5.0 in. |
| July | 63.5 °F | 83.9 °F | 4.01 in. |
| August | 61.4 °F | 82.2 °F | 4.0 in. |
| September | 53.1 °F | 76.5 °F | 3.45 in. |
| October | 41.5 °F | 63.9 °F | 2.99 in. |
| November | 30.2 °F | 48.5 °F | 2.35 in. |
| December | 20.1 °F | 35.7 °F | 1.92 in. |
| Annual | 39.9 °F | 59.7 °F | 38.02 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |