Croghan, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.4 °F (low) to 54 °F (high). Annual precipitation averages 41.1 Inches. Croghan is located in USDA Plant Hardiness Zone 4b. 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 | 8.0 °F | 27.4 °F | 3.34 in. |
| February | 9.0 °F | 29.5 °F | 2.46 in. |
| March | 18.7 °F | 38.1 °F | 2.49 in. |
| April | 32.0 °F | 52.3 °F | 3.19 in. |
| May | 44.1 °F | 65.9 °F | 3.48 in. |
| June | 53.7 °F | 74.1 °F | 3.83 in. |
| July | 58.7 °F | 78.3 °F | 3.62 in. |
| August | 57.1 °F | 77.4 °F | 3.51 in. |
| September | 49.0 °F | 70.3 °F | 3.72 in. |
| October | 38.0 °F | 57.3 °F | 4.51 in. |
| November | 27.8 °F | 44.7 °F | 3.59 in. |
| December | 17.1 °F | 33.1 °F | 3.35 in. |
| Annual | 34.4 °F | 54 °F | 41.09 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |