Lower Salem, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.5 °C (low) to 17.9 °C (high). Annual precipitation averages 1122.7 Millimeters. Lower Salem 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 | -6 °C | 4.1 °C | 84.33 mm |
| February | -5 °C | 6 °C | 74.93 mm |
| March | -1.2 °C | 11.3 °C | 99.06 mm |
| April | 4.4 °C | 18.9 °C | 96.77 mm |
| May | 10.1 °C | 23.5 °C | 112.52 mm |
| June | 15.1 °C | 27.8 °C | 119.38 mm |
| July | 17.4 °C | 29.6 °C | 118.11 mm |
| August | 16.4 °C | 29.2 °C | 93.73 mm |
| September | 12.3 °C | 25.8 °C | 88.14 mm |
| October | 5.6 °C | 19.3 °C | 74.42 mm |
| November | 0.1 °C | 12.3 °C | 76.45 mm |
| December | -3.2 °C | 6.4 °C | 84.84 mm |
| Annual | 5.5 °C | 17.9 °C | 1122.68 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |