Last updated: June 24, 2025
In Castlewood, United States, the average temperature in April hovers around 5°C (41°F), showcasing the region's chilly charm. Expect temperatures to range from a brisk -18°C (-1°F) at their lowest to a pleasant 28°C (82°F) on warmer days. During this month, precipitation is around 68 mm (2.7 in), falling over approximately 10 days, while the air maintains an average humidity of 82%, adding to the overall atmosphere.
In April in Castlewood, the average temperature is 5°C (41°F). The maximum can reach 28°C (82°F) and the minimum can be as low as -18°C (-1°F). Be prepared for a wide range of temperatures while traveling, and pack accordingly!
In Castlewood in April, the precipitation amount is 68 mm (2.7 in) over a span of 10 days.
In Castlewood in April, humidity is 82%. With an average temperature of 5°C (41°F), this humidity feels like a chilly, damp blanket wrapping around you, making outdoor activities less enjoyable and making it essential to dress in layers to stay warm while navigating the wet conditions.
In Castlewood 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 Castlewood.
UV Risk Categories
Weather in Castlewood varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Castlewood, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (15°F) | 22 mm (0.9 inches) | 85% | moderate |
| February Weather | -10°C (15°F) | 18 mm (0.7 inches) | 89% | moderate |
| March Weather | -1°C (31°F) | 50 mm (2.0 inches) | 81% | high |
| April Weather | 5°C (41°F) | 68 mm (2.7 inches) | 82% | very high |
| May Weather | 13°C (56°F) | 89 mm (3.5 inches) | 76% | very high |
| June Weather | 21°C (70°F) | 79 mm (3.1 inches) | 81% | very high |
| July Weather | 23°C (73°F) | 83 mm (3.3 inches) | 82% | very high |
| August Weather | 21°C (70°F) | 109 mm (4.3 inches) | 83% | very high |
| September Weather | 17°C (63°F) | 88 mm (3.5 inches) | 82% | very high |
| October Weather | 7°C (46°F) | 77 mm (3.0 inches) | 82% | moderate |
| November Weather | 0°C (33°F) | 26 mm (1.0 inches) | 87% | moderate |
| December Weather | -5°C (24°F) | 31 mm (1.2 inches) | 84% | low |