Mercer, WI 14 Day Weather - 54547 WeatherWorld.com
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Mercer, WI Weather Forecast


Mercer, WI Weather Forecast Dated: 348 PM Thu Sep 17 2026
Expect a cool pattern with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Thursday, September 17, 2026
Mid-Morning
53°F 11°C
Partly Cloudy
Mid-Afternoon
66°F 19°C
Overcast
Early-Evening
60°F 16°C
Overcast
Refreshing around 66°F 19°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
50°F 10°C
Overcast
Mid-Afternoon
51°F 10°C
Light Rain
Early-Evening
49°F 10°C
Light Showers
Cool and brisk at 51°F 10°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and steady pressure.
Saturday, September 19, 2026
Mid-Morning
47°F 8°C
Scattered Showers
Mid-Afternoon
48°F 9°C
Fog
Early-Evening
48°F 9°C
Fog
Chilly near 48°F 9°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the E to the NE at 8 mph 12 km/h. Gusts up to 21 mph 33 km/h.
Sunday, September 20, 2026
Mid-Morning
48°F 9°C
Overcast
Mid-Afternoon
61°F 16°C
Overcast
Early-Evening
53°F 12°C
Overcast
Cool with a high near 61°F 16°C, overcast throughout the day, with lower humidity and steady pressure. Winds blowing from the ENE at 9 mph 14 km/h.
Monday, September 21, 2026
Mid-Morning
44°F 7°C
Overcast
Mid-Afternoon
46°F 8°C
Light Rain
Early-Evening
46°F 8°C
Light Showers
Brisk around 46°F 8°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and barometric pressure falling. Winds moving from the E to the NE at 10 mph 16 km/h. Gusts up to 25 mph 40 km/h.
Tuesday, September 22, 2026
Mid-Morning
44°F 7°C
Drizzle
Mid-Afternoon
50°F 10°C
Scattered Showers
Early-Evening
49°F 10°C
Scattered Showers
Cool and brisk at 50°F 10°C, locally heavy downpours at times, with steady humidity and steady pressure.
Wednesday, September 23, 2026
Mid-Morning
48°F 9°C
Fog
Mid-Afternoon
52°F 11°C
Light Rain
Early-Evening
47°F 8°C
Scattered Showers
Chilly near 52°F 11°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the WSW at 15 mph 23 km/h. Gusts up to 31 mph 49 km/h.
Thursday, September 24, 2026
Mid-Morning
43°F 6°C
Scattered Showers
Mid-Afternoon
49°F 9°C
Scattered Showers
Early-Evening
51°F 11°C
Scattered Showers
Crisp with a high near 49°F 9°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds shifting from the WNW to the NW at 11 mph 18 km/h. Gusts up to 27 mph 44 km/h.
Friday, September 25, 2026
Mid-Morning
44°F 7°C
Sunny
Mid-Afternoon
53°F 12°C
Sunny
Early-Evening
52°F 11°C
Sunny
Brisk around 53°F 12°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NW to the W at 5 mph 8 km/h.
Saturday, September 26, 2026
Mid-Morning
50°F 10°C
Sunny
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
62°F 16°C
Sunny
Mildly cool near 64°F 18°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds switching from the SW to the SSW at 9 mph 13 km/h. Gusts up to 24 mph 39 km/h.
Sunday, September 27, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
62°F 17°C
Overcast
Comfortable at 65°F 18°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the SSW at 15 mph 23 km/h. Gusts up to 35 mph 57 km/h.
Monday, September 28, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
67°F 20°C
Sunny
Comfortable with temperatures reaching 72°F 22°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds swinging from the WSW to the NNW at 6 mph 9 km/h.
Tuesday, September 29, 2026
Mid-Morning
51°F 10°C
Overcast
Mid-Afternoon
43°F 6°C
Scattered Showers
Early-Evening
46°F 8°C
Scattered Showers
Nippy around 43°F 6°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure rising. Winds shifting from the WSW to the NNW at 4 mph 6 km/h.
Wednesday, September 30, 2026
Mid-Morning
44°F 7°C
Sunny
Mid-Afternoon
52°F 11°C
Overcast
Early-Evening
49°F 9°C
Overcast
Cool and brisk at 52°F 11°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure.
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