Rolling Hills, Wyoming has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.3 °C (low) to 15.3 °C (high). Annual precipitation averages 356.1 Millimeters. Rolling Hills is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.2 °C | 2.7 °C | 10.92 mm |
| February | -8.7 °C | 3.7 °C | 18.8 mm |
| March | -4.7 °C | 9.3 °C | 25.15 mm |
| April | -1.2 °C | 13.1 °C | 49.78 mm |
| May | 3.8 °C | 18.4 °C | 64.52 mm |
| June | 8.4 °C | 25.4 °C | 46.99 mm |
| July | 12.3 °C | 30.9 °C | 25.91 mm |
| August | 11.2 °C | 29.7 °C | 25.15 mm |
| September | 5.9 °C | 24 °C | 27.43 mm |
| October | -0.3 °C | 15.3 °C | 33.02 mm |
| November | -5.3 °C | 7.9 °C | 16.76 mm |
| December | -8.8 °C | 2.7 °C | 11.68 mm |
| Annual | 0.3 °C | 15.3 °C | 356.11 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |