Onalaska

What is the climate like in Onalaska?

The best time to visit Onalaska is typically September, the year's most comfortable month (6.6/10). Onalaska is warmest in July, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 13°F (-10°C). The wettest month is typically June and the driest is January; the year sees roughly 40 in (1012 mm) of precipitation.

• Best time to visitSeptember — the year's comfort peak (6.6/10)
• Warmest monthJuly — average high 83°F (28°C)
• Coolest monthJanuary — average low 13°F (-10°C)
• Wettest monthJune (5.2 in (132 mm))
• Driest monthJanuary (1.5 in (38 mm))
• Annual precipitation40 in (1012 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromLa Crosse Muni AP, 2 km away (1938-2026)