Fairplay, Colorado has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from -4.4 °C (low) to 9.9 °C (high). Annual precipitation averages 402.8 Millimeters. Fairplay is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Aug. 21 - Aug. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.8 °C | -0.5 °C | 19.05 mm |
| February | -12.9 °C | -0.2 °C | 22.86 mm |
| March | -9.1 °C | 3.6 °C | 27.18 mm |
| April | -5.8 °C | 7.6 °C | 43.94 mm |
| May | -1.4 °C | 13.1 °C | 40.13 mm |
| June | 2.4 °C | 19.6 °C | 24.89 mm |
| July | 5.8 °C | 22.4 °C | 60.45 mm |
| August | 5 °C | 20.8 °C | 62.23 mm |
| September | 1.4 °C | 17.4 °C | 35.31 mm |
| October | -3.4 °C | 11.1 °C | 28.19 mm |
| November | -8.8 °C | 4.4 °C | 18.03 mm |
| December | -12.9 °C | -0.7 °C | 20.57 mm |
| Annual | -4.4 °C | 9.9 °C | 402.83 mm |
| Average First Frost Date | Aug. 21 - Aug. 31 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |