August in Saint Paul averages a daily high of 27.3°C with nights around 16.7°C. Expect roughly 9.9 wet days totalling 108.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Saint Paul is May–June.
Based on ST. PAUL DOWNTOWN AIRPORT, MN US (3.2km), 1995–2024. 29 years of August data.