Fabius, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.8 °F (low) to 55.1 °F (high). Annual precipitation averages 43.9 Inches. Fabius is located in USDA Plant Hardiness Zone 5b. 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 | 12.7 °F | 29.9 °F | 2.83 in. |
| February | 13.8 °F | 31.9 °F | 2.32 in. |
| March | 21.2 °F | 39.9 °F | 3.22 in. |
| April | 33.1 °F | 53.4 °F | 3.62 in. |
| May | 44.0 °F | 66.2 °F | 3.73 in. |
| June | 53.4 °F | 74.2 °F | 4.63 in. |
| July | 57.6 °F | 78.7 °F | 4.3 in. |
| August | 56.2 °F | 77.4 °F | 4.13 in. |
| September | 49.1 °F | 70.8 °F | 4.12 in. |
| October | 38.9 °F | 58.1 °F | 4.38 in. |
| November | 29.6 °F | 45.9 °F | 3.37 in. |
| December | 20.3 °F | 35.1 °F | 3.21 in. |
| Annual | 35.8 °F | 55.1 °F | 43.86 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 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 |