Saint Louis

What is the climate like in Saint Louis?

The best time to visit Saint Louis is typically June – September, with trip comfort peaking in September (7.1/10). Saint Louis is warmest in July, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 19°F (-7°C). The wettest month is typically October and the driest is November; the year sees roughly 36 in (921 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in September (7.1/10)
• Warmest monthJuly — average high 84°F (29°C)
• Coolest monthJanuary — average low 19°F (-7°C)
• Wettest monthOctober (3.8 in (96 mm))
• Driest monthNovember (2.0 in (50 mm))
• Annual precipitation36 in (921 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromAlma, 4 km away (1887-2026)