Clymer, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.5 °F (low) to 56.6 °F (high). Annual precipitation averages 48.6 Inches. Clymer 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 | 15.4 °F | 31.3 °F | 3.84 in. |
| February | 15.9 °F | 33.8 °F | 2.78 in. |
| March | 23.1 °F | 43.0 °F | 3.31 in. |
| April | 33.4 °F | 56.3 °F | 3.94 in. |
| May | 44.3 °F | 67.9 °F | 4.21 in. |
| June | 52.9 °F | 75.6 °F | 4.64 in. |
| July | 56.7 °F | 79.4 °F | 4.91 in. |
| August | 55.7 °F | 78.0 °F | 3.97 in. |
| September | 49.2 °F | 71.6 °F | 4.35 in. |
| October | 39.0 °F | 59.4 °F | 4.7 in. |
| November | 30.1 °F | 46.7 °F | 3.79 in. |
| December | 22.8 °F | 36.1 °F | 4.15 in. |
| Annual | 36.5 °F | 56.6 °F | 48.59 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 |