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Hourly Forecast
Daylight Hours
06:52
Sunrise
19:06
Sunset
Moon
Waxing Crescent
13:00
Moonrise
21:00
Moonset
Daily Forecast
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Air Quality Data Available
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UV Index
Humidity
Weather in Onalaska today, September 16, 2026
Cloud cover dominates in Onalaska on September 16, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. Cloud leads the morning, peaking close to 100% near 02:00. Sunshine has little room until later in the day.
Temperatures climb from an overnight low near 11°C toward a daytime high of about 22°C. The air stays humid, with relative humidity between 57% and 95% and the peak around 03:00. Winds stay light, near 3.3 km/h by 03:00, so the day feels still more than breezy.
Afternoon skies stay clogged, peaking close to 100% near 16:00. The grey theme continues rather than clearing out. Visibility holds near 15.8 km, though it can fall to 14.4 km. Sunrise is at 06:52 and sunset at 19:06, giving 12 hours 13 minutes of sunlight today.
Overall, Onalaska on September 16, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 22°C.
Frequently asked questions about weather in Onalaska
How warm does it get in Onalaska?
The warmest month in Onalaska is July, with average high temperatures of 28°C. The average temperature during this period is around 23°C.
How cold does it get in Onalaska?
The coldest month in Onalaska is January, with average low temperatures of -10°C. The average temperature during this period is around -7°C.
What is the wettest time of year in Onalaska?
The wettest month in Onalaska is June, with an average of 131mm of precipitation.
What is the driest time of year in Onalaska?
The driest month in Onalaska is January, with an average of 36mm of precipitation.
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