Saint-Louis

What is the climate like in Saint-Louis?

The best time to visit Saint-Louis is typically July – August, with trip comfort peaking in July (6.6/10). Saint-Louis is warmest in July, when daily highs average 78°F (25°C), and coolest in January, when lows fall to about 30°F (-1°C). The wettest month is typically June and the driest is February; the year sees roughly 49 in (1240 mm) of precipitation.

• Best time to visitJuly – August — comfort peaks in July (6.6/10)
• Warmest monthJuly — average high 78°F (25°C)
• Coolest monthJanuary — average low 30°F (-1°C)
• Wettest monthJune (5.3 in (134 mm))
• Driest monthFebruary (3.0 in (76 mm))
• Annual precipitation49 in (1240 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromBasel Binningen, 7 km away (1901-2026)