Rising Sun, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.6 °C (low) to 17.7 °C (high). Annual precipitation averages 1240.6 Millimeters. Rising Sun is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.8 °C | 4.5 °C | 88.14 mm |
| February | -4.6 °C | 5.8 °C | 74.17 mm |
| March | -0.4 °C | 10.6 °C | 110.24 mm |
| April | 5.3 °C | 17.4 °C | 94.49 mm |
| May | 10.6 °C | 22.9 °C | 96.27 mm |
| June | 15.8 °C | 27.4 °C | 117.09 mm |
| July | 18.6 °C | 29.9 °C | 116.59 mm |
| August | 17.7 °C | 29.3 °C | 111.51 mm |
| September | 13.8 °C | 25.5 °C | 122.43 mm |
| October | 7.2 °C | 19.3 °C | 113.03 mm |
| November | 1.9 °C | 12.4 °C | 85.85 mm |
| December | -2.2 °C | 6.8 °C | 110.74 mm |
| Annual | 6.6 °C | 17.7 °C | 1240.55 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |