April in Sandy averages a daily high of 16.3°C with nights around 4.3°C. Expect roughly 9.4 wet days totalling 81mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sandy is May–June.
Based on COTTONWOOD WEIR, UT US (9km), 1995–2024. 29 years of April data.