Typical Weather in Sioux City, IA in August

83° F Avg High

61° F Avg Low

7 Rainy Days

☀️ Temperature Summary

August is a popular time to visit, with an inviting climate featuring warm temperatures. August is one of the warmer months of the year for Sioux City, with highs averaging around 83°F. Overnight lows will be around 61°F on average.

August is a great time to visit Sioux City, with mild temperatures and sunny days being very common.

High Temps Throughout the Year

☔ Rain Summary

In August you can expect close to a 22% chance of rain for any given day. It rains more than usual in August, with total rainfall for the month typically near 4 inches.

Rainfall Throughout the Year

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📍 Nearby Cities in August

94°F / 70°F
90°F / 65°F
82°F / 60°F
79°F / 60°F
79°F / 58°F
85°F / 62°F

📅 Year Round Weather in Sioux City

31°F / 10°F
32°F / 10°F
49°F / 25°F
60°F / 35°F
71°F / 48°F
84°F / 60°F
87°F / 64°F
83°F / 61°F
78°F / 53°F
63°F / 38°F
49°F / 25°F
36°F / 16°F
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