Last updated: June 24, 2025
In April, the average temperature in Rapids City, United States hovers around 10°C (50°F). Expect a significant range, with minimum temperatures dipping to -9°C (17°F) and peaking at 28°C (84°F). Additionally, this month brings about 109 mm (4.3 in) of precipitation over approximately 12 days, contributing to a notably high average humidity of 82%. Stay prepared for a mix of weather conditions!
In April in Rapids City, the average temperature is 10°C (50°F). Maximum temperatures can reach 28°C (84°F), while minimums can drop as low as -9°C (17°F). Be prepared for a wide range of temperatures when traveling during this month.
In Rapids City in April, the total precipitation amount is 109 mm (4.3 in) during a span of 12 days.
In Rapids City in April, humidity is 82%. With an average temperature of 10°C (50°F), this humidity feels like a dense, heavy blanket wrapping around you, making every step feel sluggish and the air thick, which can make traveling quite uncomfortable.
In Rapids City in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Rapids City.
UV Risk Categories
Weather in Rapids City varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Rapids City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (24°F) | 55 mm (2.2 inches) | 81% | moderate |
| February Weather | -3°C (27°F) | 59 mm (2.3 inches) | 81% | moderate |
| March Weather | 5°C (40°F) | 93 mm (3.6 inches) | 81% | high |
| April Weather | 10°C (50°F) | 109 mm (4.3 inches) | 82% | very high |
| May Weather | 17°C (63°F) | 149 mm (5.9 inches) | 78% | very high |
| June Weather | 23°C (74°F) | 137 mm (5.4 inches) | 81% | extreme |
| July Weather | 25°C (77°F) | 88 mm (3.5 inches) | 79% | very high |
| August Weather | 23°C (74°F) | 73 mm (2.9 inches) | 77% | very high |
| September Weather | 20°C (69°F) | 107 mm (4.2 inches) | 78% | very high |
| October Weather | 12°C (55°F) | 120 mm (4.7 inches) | 78% | high |
| November Weather | 4°C (39°F) | 50 mm (2.0 inches) | 87% | moderate |
| December Weather | 0°C (33°F) | 49 mm (1.9 inches) | 84% | low |