August in South Hill averages a daily high of 24.3°C with nights around 11.6°C. Expect roughly 4.7 wet days totalling 21.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit South Hill is July–September.
Based on MCMILLIN RESERVOIR, WA US (1.2km), 1995–2024. 15 years of August data.