Kansas City, Missouri weather in August

Averages from 2021–2025 (155 days of record).

Average high: 88°F
Average low: 70°F
Rainy days: ~9 per month
Total precipitation: 3.7 in
Warmest recorded: 102°F
Coldest recorded: 58°F

Expect August days in Kansas City, Missouri to top out around 88°F and cool to about 70°F overnight, with roughly 9 days of measurable rain across the month. In recent years August has ranged from 58°F to 102°F.

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Current Kansas City, Missouri forecast → · Historical data by Open-Meteo (ERA5).