Weather WorldLake Onalaska, WI 14 Day Weather
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Lake Onalaska, WI Weather Forecast
Lake Onalaska, WI Weather Forecast Dated: 853 PM Thu Sep 10 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Thursday, September 10, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
70°F 22°C
Sunny
Pleasant near 79°F 26°C, sunny throughout the day, with lower humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
80°F 27°C
Overcast
Early-Evening
74°F 23°C
Overcast
Balmy with temperatures reaching 80°F 27°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds out of the S at 15 mph 24 km/h. Gusts up to 26 mph 41 km/h.
Saturday, September 12, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
78°F 26°C
Light Showers
Early-Evening
72°F 23°C
Scattered Showers
Enjoyable around 78°F 26°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds switching from the WNW to the NNW at 7 mph 12 km/h.
Sunday, September 13, 2026
Mid-Morning
58°F 14°C
Overcast
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
61°F 16°C
Overcast
Cool with a high near 65°F 18°C, overcast throughout the day, with steady humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
62°F 17°C
Overcast
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
62°F 17°C
Scattered Showers
Refreshing around 64°F 18°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the SSE to the ESE at 10 mph 15 km/h. Gusts up to 26 mph 42 km/h.
Tuesday, September 15, 2026
Mid-Morning
62°F 17°C
Light Fog
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
63°F 17°C
Overcast
Pleasant near 69°F 21°C, overcast throughout the day, with lower humidity and barometric pressure rising. Winds out of the NW at 11 mph 17 km/h.
Wednesday, September 16, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
60°F 16°C
Overcast
Comfortable at 65°F 18°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
63°F 17°C
Sunny
Enjoyable around 71°F 22°C, sunny throughout the day, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
58°F 14°C
Sunny
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
65°F 18°C
Sunny
Mild temperatures up to 72°F 22°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds blowing from the SW at 9 mph 14 km/h.
Saturday, September 19, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
78°F 26°C
Sunny
Early-Evening
69°F 21°C
Sunny
Mild with a high of 78°F 26°C, sunny throughout the day, with steady humidity and steady pressure.
Sunday, September 20, 2026
Mid-Morning
63°F 17°C
Fog
Mid-Afternoon
73°F 23°C
Partly Cloudy
Early-Evening
69°F 21°C
Overcast
Pleasant near 73°F 23°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
63°F 17°C
Overcast
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
66°F 19°C
Overcast
Comfortable with temperatures reaching 75°F 24°C, overcast in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and barometric pressure falling. Winds SSE at 9 mph 14 km/h.
Tuesday, September 22, 2026
Mid-Morning
60°F 16°C
Light Showers
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
62°F 17°C
Sunny
Enjoyable around 71°F 22°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure. Winds switching from the W to the WSW at 8 mph 13 km/h.
Wednesday, September 23, 2026
Mid-Morning
49°F 9°C
Overcast
Mid-Afternoon
56°F 13°C
Overcast
Early-Evening
53°F 12°C
Overcast
Cool and brisk at 56°F 13°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds moving from the NNW to the NNE at 6 mph 10 km/h.
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