Rodman, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2 °C (low) to 12.5 °C (high). Annual precipitation averages 1222.3 Millimeters. Rodman is located in USDA Plant Hardiness Zone 5a. 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 | -12.1 °C | -2.2 °C | 107.19 mm |
| February | -11.6 °C | -1.1 °C | 80.77 mm |
| March | -6.6 °C | 3.7 °C | 82.55 mm |
| April | 0.4 °C | 11.4 °C | 95 mm |
| May | 7.2 °C | 18.8 °C | 95 mm |
| June | 12.2 °C | 23.2 °C | 95.25 mm |
| July | 15 °C | 25.7 °C | 92.46 mm |
| August | 14.2 °C | 25.6 °C | 100.58 mm |
| September | 9.8 °C | 21.6 °C | 105.16 mm |
| October | 4 °C | 14.4 °C | 135.38 mm |
| November | -1.6 °C | 7.3 °C | 116.84 mm |
| December | -7.5 °C | 1.1 °C | 116.08 mm |
| Annual | 2 °C | 12.5 °C | 1222.26 mm |
| 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |