Columbus, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.5 °F (low) to 57.5 °F (high). Annual precipitation averages 48.5 Inches. Columbus is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.4 °F | 32.2 °F | 3.9 in. |
| February | 17.0 °F | 34.6 °F | 2.84 in. |
| March | 24.2 °F | 44.1 °F | 3.51 in. |
| April | 34.3 °F | 57.6 °F | 4.02 in. |
| May | 45.3 °F | 68.9 °F | 4.04 in. |
| June | 54.0 °F | 76.5 °F | 4.59 in. |
| July | 57.8 °F | 80.2 °F | 4.95 in. |
| August | 56.7 °F | 78.9 °F | 3.85 in. |
| September | 50.3 °F | 72.6 °F | 4.21 in. |
| October | 40.1 °F | 60.4 °F | 4.47 in. |
| November | 30.8 °F | 47.5 °F | 3.77 in. |
| December | 23.6 °F | 36.8 °F | 4.34 in. |
| Annual | 37.5 °F | 57.5 °F | 48.49 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°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 |