Monthey

What is the climate like in Monthey?

The best time to visit Monthey is typically July, the year's most comfortable month (5.9/10). Monthey is warmest in July, when daily highs average 69°F (20°C), and coolest in January, when lows fall to about 15°F (-9°C). The wettest month is typically July and the driest is February; the year sees roughly 76 in (1932 mm) of precipitation.

• Best time to visitJuly — the year's comfort peak (5.9/10)
• Warmest monthJuly — average high 69°F (20°C)
• Coolest monthJanuary — average low 15°F (-9°C)
• Wettest monthJuly (8.4 in (213 mm))
• Driest monthFebruary (4.3 in (110 mm))
• Annual precipitation76 in (1932 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSion 2, 30 km away (1955-2026)