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Winnebago, IL Weather Forecast
Winnebago, IL Weather Forecast Dated: 316 AM Sun Sep 27 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Sunday, September 27, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
69°F 21°C
Partly Cloudy
Early-Evening
63°F 17°C
Sunny
Pleasant near 69°F 21°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure.
Monday, September 28, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
65°F 19°C
Sunny
Comfortable with temperatures reaching 71°F 22°C, sunny throughout the day, with steady humidity and steady pressure.
Tuesday, September 29, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
68°F 20°C
Scattered Showers
Early-Evening
58°F 14°C
Rain
Enjoyable around 68°F 20°C, locally heavy downpours at times, with increasing humidity and barometric pressure falling. Winds turning from the S to the SSW at 9 mph 15 km/h. Gusts up to 27 mph 43 km/h.
Wednesday, September 30, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
70°F 21°C
Scattered Showers
Early-Evening
66°F 19°C
Overcast
Mild temperatures up to 70°F 21°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Thursday, October 1, 2026
Mid-Morning
64°F 18°C
Fog
Mid-Afternoon
67°F 20°C
Overcast
Early-Evening
66°F 19°C
Light Showers
Refreshing around 67°F 20°C, mainly dry until evening showers arrive, with steady humidity and barometric pressure falling.
Friday, October 2, 2026
Mid-Morning
60°F 16°C
Light Showers
Mid-Afternoon
58°F 15°C
Light Showers
Early-Evening
57°F 14°C
Scattered Showers
Mildly cool near 58°F 15°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds blowing from the NE at 11 mph 18 km/h. Gusts up to 24 mph 38 km/h.
Saturday, October 3, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
60°F 16°C
Sunny
Comfortable at 65°F 18°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds moving from the ENE to the E at 9 mph 15 km/h. Gusts up to 20 mph 32 km/h.
Sunday, October 4, 2026
Mid-Morning
59°F 15°C
Light Fog
Mid-Afternoon
62°F 16°C
Scattered Showers
Early-Evening
57°F 14°C
Overcast
Cool with a high near 62°F 16°C, scattered downpours possible, with steady humidity and steady pressure. Winds picking up from ESE at 4 mph 7 km/h to NNW at 16 mph 25 km/h. Gusts up to 26 mph 42 km/h.
Monday, October 5, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
51°F 11°C
Sunny
Early-Evening
47°F 8°C
Sunny
Brisk around 51°F 11°C, sunny throughout the day, with steady humidity and steady pressure. Winds blowing from the NW at 14 mph 22 km/h.
Tuesday, October 6, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
56°F 14°C
Sunny
Early-Evening
51°F 11°C
Sunny
Cool and brisk at 56°F 14°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds turning from the SSW to the S at 10 mph 15 km/h. Gusts up to 22 mph 36 km/h.
Wednesday, October 7, 2026
Mid-Morning
51°F 11°C
Overcast
Mid-Afternoon
62°F 17°C
Partly Cloudy
Early-Evening
58°F 15°C
Overcast
Comfortable at 62°F 17°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds switching from the SSW to the WSW at 8 mph 12 km/h.
Thursday, October 8, 2026
Mid-Morning
49°F 10°C
Scattered Showers
Mid-Afternoon
49°F 10°C
Light Showers
Early-Evening
43°F 7°C
Scattered Showers
Crisp with a high near 49°F 10°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the NW to the NNW at 13 mph 21 km/h. Gusts up to 22 mph 35 km/h.
Friday, October 9, 2026
Mid-Morning
40°F 5°C
Overcast
Mid-Afternoon
47°F 9°C
Overcast
Early-Evening
43°F 6°C
Sunny
Brisk around 47°F 9°C, cloudy in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds swinging from the NNW to the W at 9 mph 15 km/h. Gusts up to 20 mph 32 km/h.
Saturday, October 10, 2026
Mid-Morning
43°F 6°C
Cloudy
Mid-Afternoon
55°F 13°C
Cloudy
Early-Evening
48°F 9°C
Partly Cloudy
Cool and brisk at 55°F 13°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds shifting from the WSW to the NW at 15 mph 24 km/h. Gusts up to 28 mph 45 km/h.
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