Paris, Idaho has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.5 °C (low) to 12.8 °C (high). Annual precipitation averages 391.7 Millimeters. Paris 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 Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.3 °C | -1.2 °C | 42.42 mm |
| February | -12.8 °C | 0.4 °C | 36.83 mm |
| March | -7.5 °C | 5.6 °C | 32 mm |
| April | -2.7 °C | 11.3 °C | 35.81 mm |
| May | 1.8 °C | 16.9 °C | 50.8 mm |
| June | 5.7 °C | 22.6 °C | 27.43 mm |
| July | 8.6 °C | 28 °C | 15.24 mm |
| August | 8.4 °C | 27.6 °C | 19.56 mm |
| September | 2.8 °C | 22.3 °C | 28.96 mm |
| October | -2.3 °C | 14.3 °C | 34.8 mm |
| November | -7.2 °C | 5.9 °C | 31.5 mm |
| December | -12 °C | -0.3 °C | 36.32 mm |
| Annual | -2.5 °C | 12.8 °C | 391.67 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |