August in Sandy averages a daily high of 31.9°C with nights around 19.1°C. Expect roughly 4.8 wet days totalling 25.7mm. 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. 30 years of August data.