Sandpoint, Idaho has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 1.9 °C (low) to 13.8 °C (high). Annual precipitation averages 825.2 Millimeters. Sandpoint is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.7 °C | 1.3 °C | 112.27 mm |
| February | -4.5 °C | 3.7 °C | 70.61 mm |
| March | -2.1 °C | 8.1 °C | 88.39 mm |
| April | 0.9 °C | 13.2 °C | 60.71 mm |
| May | 4.9 °C | 18.9 °C | 60.71 mm |
| June | 7.9 °C | 22.2 °C | 62.48 mm |
| July | 10.2 °C | 27.8 °C | 28.7 mm |
| August | 9.7 °C | 27.8 °C | 21.84 mm |
| September | 5.6 °C | 22 °C | 32.26 mm |
| October | 1.4 °C | 13.4 °C | 69.34 mm |
| November | -1.7 °C | 5.6 °C | 103.12 mm |
| December | -4.8 °C | 1.1 °C | 114.81 mm |
| Annual | 1.9 °C | 13.8 °C | 825.24 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |