Park City, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.7 °C (low) to 16.1 °C (high). Annual precipitation averages 322.1 Millimeters. Park City is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.4 °C | 3.1 °C | 11.68 mm |
| February | -8.4 °C | 5.1 °C | 11.68 mm |
| March | -4.3 °C | 10.7 °C | 18.29 mm |
| April | -0.3 °C | 15 °C | 43.94 mm |
| May | 4.8 °C | 20.1 °C | 67.82 mm |
| June | 9.4 °C | 25.4 °C | 45.72 mm |
| July | 12.7 °C | 31.1 °C | 27.43 mm |
| August | 11.3 °C | 30.4 °C | 14.73 mm |
| September | 6.4 °C | 24.5 °C | 24.64 mm |
| October | 0.4 °C | 16.2 °C | 29.72 mm |
| November | -4.7 °C | 8.7 °C | 13.46 mm |
| December | -9.7 °C | 3.2 °C | 12.95 mm |
| Annual | 0.7 °C | 16.1 °C | 322.06 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |