Story, Wyoming has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.1 °C (low) to 13.7 °C (high). Annual precipitation averages 647.7 Millimeters. Story is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.5 °C | 2.9 °C | 27.43 mm |
| February | -9.7 °C | 3.2 °C | 32.77 mm |
| March | -5.6 °C | 7.6 °C | 50.29 mm |
| April | -1.6 °C | 11.2 °C | 83.31 mm |
| May | 3.6 °C | 16.2 °C | 114.81 mm |
| June | 8.2 °C | 22.2 °C | 68.33 mm |
| July | 12.1 °C | 27.7 °C | 42.67 mm |
| August | 11 °C | 27.1 °C | 31.75 mm |
| September | 6.2 °C | 21.6 °C | 56.39 mm |
| October | 0.1 °C | 13.5 °C | 77.98 mm |
| November | -5.7 °C | 7.7 °C | 35.31 mm |
| December | -9.8 °C | 3 °C | 26.67 mm |
| Annual | -0.1 °C | 13.7 °C | 647.71 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |