Bright, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.9 °F (low) to 63.5 °F (high). Annual precipitation averages 45.8 Inches. Bright is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.9 °F | 38.1 °F | 3.42 in. |
| February | 23.9 °F | 42.2 °F | 2.81 in. |
| March | 32.4 °F | 52.1 °F | 3.96 in. |
| April | 42.9 °F | 64.8 °F | 4.75 in. |
| May | 53.0 °F | 73.7 °F | 5.06 in. |
| June | 61.7 °F | 81.8 °F | 4.74 in. |
| July | 65.0 °F | 85.0 °F | 4.07 in. |
| August | 63.5 °F | 84.3 °F | 3.36 in. |
| September | 56.3 °F | 78.4 °F | 3.19 in. |
| October | 44.5 °F | 66.6 °F | 3.32 in. |
| November | 34.4 °F | 53.0 °F | 3.37 in. |
| December | 26.7 °F | 42.3 °F | 3.7 in. |
| Annual | 43.9 °F | 63.5 °F | 45.75 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |