Onaping, Ontario climate data is summarized below. Average annual temperatures range from 29.1 °F (low) to 48.7 °F (high). Annual precipitation averages 23.2 Inches. Onaping is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -27.4 °F | -21.7 °F | 0 in. |
| February | -27.5 °F | -21.4 °F | 0 in. |
| March | -23.7 °F | -17.4 °F | 203.2 in. |
| April | -19.3 °F | -13.1 °F | 1422.4 in. |
| May | -15.2 °F | -8 °F | 1803.4 in. |
| June | -12.2 °F | -5.4 °F | 1778 in. |
| July | -11.2 °F | -4.3 °F | 1879.6 in. |
| August | -11.5 °F | -5 °F | 2159 in. |
| September | -14.1 °F | -7.6 °F | 2032 in. |
| October | -17 °F | -11.8 °F | 2463.8 in. |
| November | -20.4 °F | -15.8 °F | 1193.8 in. |
| December | -24.7 °F | -20.1 °F | 0 in. |
| Annual | 29.1 °F | 48.7 °F | 23.15 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |