Sioux City Weather in August

Sioux City in August sees high daytime temperatures of 29°C (84°F) and nighttime lows of 16°C (61°F). Rainfall is fairly high this month at around 104 mm (4.1 in), so pack a rain jacket to stay dry.

Rainfall in Sioux City in August

Based on our climate data of the past 30 years, about 11 days of rain are anticipated, with 104 mm (4.1 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Sioux City in August

August in Sioux City brings high temperatures, with highs of 29°C (84°F) and nights around 16°C (61°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 16°C (61°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

If you prefer enjoying temperate temperatures and rain-free days, September typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.