Pocatello, Idaho has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.9 °C (low) to 15.8 °C (high). Annual precipitation averages 325.9 Millimeters. Pocatello is located in USDA Plant Hardiness Zone 6a. 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 | -8.4 °C | 0.8 °C | 26.16 mm |
| February | -6.8 °C | 3.6 °C | 24.13 mm |
| March | -2.7 °C | 9.8 °C | 33.78 mm |
| April | 0.2 °C | 14.9 °C | 33.27 mm |
| May | 4.4 °C | 20.3 °C | 38.1 mm |
| June | 7.9 °C | 25.7 °C | 27.94 mm |
| July | 11.6 °C | 31.6 °C | 14.73 mm |
| August | 10.7 °C | 30.9 °C | 18.29 mm |
| September | 6.2 °C | 25.3 °C | 26.42 mm |
| October | 0.7 °C | 17 °C | 27.94 mm |
| November | -4.3 °C | 7.8 °C | 23.11 mm |
| December | -8.2 °C | 1.3 °C | 32 mm |
| Annual | 0.9 °C | 15.8 °C | 325.87 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |