New Meadows, Idaho has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from -1 °C (low) to 14.3 °C (high). Annual precipitation averages 588.3 Millimeters. New Meadows is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 11 - Jun. 20 through the first frost around Aug. 11 - Aug. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.1 °C | 0.3 °C | 75.18 mm |
| February | -8.4 °C | 3.4 °C | 52.07 mm |
| March | -4.8 °C | 8.3 °C | 63.5 mm |
| April | -1.4 °C | 12.7 °C | 51.31 mm |
| May | 2.6 °C | 18.6 °C | 55.12 mm |
| June | 5.8 °C | 22.9 °C | 50.8 mm |
| July | 9.1 °C | 29.7 °C | 13.72 mm |
| August | 7.8 °C | 29.7 °C | 15.49 mm |
| September | 3.5 °C | 24 °C | 23.37 mm |
| October | -1.3 °C | 15.3 °C | 41.91 mm |
| November | -5.3 °C | 6.3 °C | 59.18 mm |
| December | -9.4 °C | 0.3 °C | 86.61 mm |
| Annual | -1 °C | 14.3 °C | 588.26 mm |
| Average First Frost Date | Aug. 11 - Aug. 20 |
| Average Last Frost Date | Jun. 11 - Jun. 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |