Richland, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.4 °F (low) to 56.5 °F (high). Annual precipitation averages 48.8 Inches. Richland is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.8 °F | 31.3 °F | 4.92 in. |
| February | 15.7 °F | 33.0 °F | 3.62 in. |
| March | 23.4 °F | 41.1 °F | 3.18 in. |
| April | 34.4 °F | 55.0 °F | 3.58 in. |
| May | 45.8 °F | 67.7 °F | 3.63 in. |
| June | 55.2 °F | 75.7 °F | 3.76 in. |
| July | 61.1 °F | 79.8 °F | 3.49 in. |
| August | 59.9 °F | 78.7 °F | 3.9 in. |
| September | 52.8 °F | 72.3 °F | 4.17 in. |
| October | 42.5 °F | 59.7 °F | 5.08 in. |
| November | 32.6 °F | 47.5 °F | 4.52 in. |
| December | 22.8 °F | 36.5 °F | 4.95 in. |
| Annual | 38.4 °F | 56.5 °F | 48.8 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |