Onalaska Weather in August

Onalaska in August sees high daytime temperatures of 28°C (82°F) and nighttime lows of 17°C (63°F). Rainfall is fairly high this month at around 116 mm (4.6 in), so pack a rain jacket to stay dry.

Rainfall in Onalaska in August

Historically, the month has about 11 days of rain, averaging 116 mm (4.6 in) in total. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Onalaska in August

In August, Onalaska sees high temperatures, with highs of 28°C (82°F). Nights drop to around 17°C (63°F). During August, the summer season is in full swing. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Should you favor a climate that's both dry and comfortably warm, July and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.