Sun Prairie, WI 14 Day Weather - 53559 WeatherWorld.com
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Sun Prairie, WI Weather Forecast


Sun Prairie, WI Weather Forecast Dated: 153 PM Thu Sep 10 2026
Expect a cool pattern with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.
Thursday, September 10, 2026
Mid-Morning
67°F 20°C
Overcast
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
68°F 20°C
Sunny
Warm and summery near 82°F 28°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
72°F 23°C
Overcast
Comfortable with temperatures reaching 77°F 25°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the SSW to the S at 12 mph 19 km/h. Gusts up to 25 mph 39 km/h.
Saturday, September 12, 2026
Mid-Morning
66°F 19°C
Overcast
Mid-Afternoon
78°F 25°C
Overcast
Early-Evening
72°F 23°C
Scattered Showers
Enjoyable around 78°F 25°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds switching from the SW to the WSW at 7 mph 11 km/h.
Sunday, September 13, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
62°F 17°C
Light Showers
Early-Evening
63°F 17°C
Scattered Showers
Cool with a high near 62°F 17°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the ENE to the E at 10 mph 16 km/h.
Monday, September 14, 2026
Mid-Morning
59°F 15°C
Light Showers
Mid-Afternoon
66°F 19°C
Scattered Showers
Early-Evening
77°F 25°C
Cloudy
Refreshing around 66°F 19°C, scattered downpours possible, with lower humidity and barometric pressure falling. A stray shower or storm late in the day. Winds swinging from the SE to the SW at 10 mph 16 km/h.
Tuesday, September 15, 2026
Mid-Morning
62°F 17°C
Overcast
Mid-Afternoon
66°F 19°C
Overcast
Early-Evening
65°F 18°C
Partly Cloudy
Mildly cool near 66°F 19°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure rising. Winds shifting from the NW to the SE at 6 mph 10 km/h.
Wednesday, September 16, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
52°F 11°C
Light Showers
Early-Evening
52°F 11°C
Light Showers
Chilly near 52°F 11°C, drier morning followed by showers lasting through evening, with increasing humidity and steady pressure. Winds turning from the NE to the NNE at 7 mph 11 km/h.
Thursday, September 17, 2026
Mid-Morning
66°F 19°C
Light Showers
Mid-Afternoon
66°F 19°C
Light Showers
Early-Evening
61°F 16°C
Sunny
Cool with a high near 66°F 19°C, showers lingering into the afternoon before clearing, with lower humidity and barometric pressure rising. Winds easing from SSW 14 mph 23 km/h to WSW 3 mph 5 km/h.
Friday, September 18, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
56°F 14°C
Sunny
Early-Evening
52°F 11°C
Sunny
Brisk around 56°F 14°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds blowing from the NW at 10 mph 17 km/h.
Saturday, September 19, 2026
Mid-Morning
50°F 10°C
Sunny
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
56°F 14°C
Sunny
Mildly cool near 62°F 17°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the WNW to the SSE at 4 mph 7 km/h.
Sunday, September 20, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
60°F 16°C
Sunny
Comfortable at 65°F 19°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds shifting from the SSW to the S at 10 mph 15 km/h.
Monday, September 21, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
65°F 18°C
Scattered Showers
Early-Evening
64°F 18°C
Overcast
Cool with a high near 65°F 18°C, locally heavy downpours at times, with increasing humidity and barometric pressure falling. Winds turning from the S to the SSW at 15 mph 25 km/h. Gusts up to 33 mph 53 km/h.
Tuesday, September 22, 2026
Mid-Morning
60°F 16°C
Light Fog
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
58°F 14°C
Overcast
Refreshing around 65°F 18°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds switching from the WSW to the NW at 14 mph 22 km/h. Gusts up to 22 mph 35 km/h.
Wednesday, September 23, 2026
Mid-Morning
50°F 10°C
Overcast
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
55°F 13°C
Overcast
Cool and brisk at 55°F 13°C, overcast throughout the day, with steady humidity and steady pressure. Winds moving from the WSW to the NE at 9 mph 13 km/h.
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