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Bonus, IL Weather Forecast


Bonus, IL Weather Forecast Dated: 445 PM Tue Sep 08 2026
Expect a mild stretch 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.
Tuesday, September 8, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
85°F 29°C
Overcast
Early-Evening
78°F 26°C
Overcast
Warm and summery near 85°F 29°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds out of the S at 13 mph 21 km/h. Gusts up to 20 mph 33 km/h.
Wednesday, September 9, 2026
Mid-Morning
69°F 20°C
Light Showers
Mid-Afternoon
77°F 25°C
Overcast
Early-Evening
75°F 24°C
Scattered Showers
Comfortable with temperatures reaching 77°F 25°C, scattered downpours possible, with steady humidity and steady pressure. Winds switching from the S to the WSW at 6 mph 10 km/h.
Thursday, September 10, 2026
Mid-Morning
62°F 17°C
Overcast
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
67°F 20°C
Sunny
Enjoyable around 73°F 23°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
78°F 26°C
Sunny
Early-Evening
72°F 22°C
Light Showers
Mild temperatures up to 78°F 26°C, drier conditions through late afternoon before showers move in, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds moving from the S to the SSE at 8 mph 12 km/h.
Saturday, September 12, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
74°F 24°C
Scattered Showers
Mild with a high of 72°F 22°C, scattered downpours possible, with increasing humidity and steady pressure. Winds swinging from the NNW to the S at 5 mph 8 km/h.
Sunday, September 13, 2026
Mid-Morning
69°F 20°C
Partly Cloudy
Mid-Afternoon
74°F 23°C
Overcast
Early-Evening
67°F 19°C
Scattered Showers
Pleasant near 74°F 23°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds blowing from the NE at 9 mph 14 km/h. Gusts up to 20 mph 32 km/h.
Monday, September 14, 2026
Mid-Morning
66°F 19°C
Overcast
Mid-Afternoon
72°F 22°C
Scattered Showers
Early-Evening
73°F 23°C
Overcast
Comfortable with temperatures reaching 72°F 22°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds turning from the ESE to the SSE at 12 mph 19 km/h. Gusts up to 28 mph 45 km/h.
Tuesday, September 15, 2026
Mid-Morning
73°F 23°C
Light Showers
Mid-Afternoon
78°F 26°C
Scattered Showers
Early-Evening
70°F 21°C
Sunny
Enjoyable around 78°F 26°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds switching from the W to the NW at 8 mph 12 km/h.
Wednesday, September 16, 2026
Mid-Morning
58°F 14°C
Overcast
Mid-Afternoon
61°F 16°C
Light Showers
Early-Evening
63°F 17°C
Sunny
Refreshing around 61°F 16°C, dry early, with showers developing in the afternoon, with steady humidity and steady pressure. Winds moving from the NE to the E at 9 mph 15 km/h.
Thursday, September 17, 2026
Mid-Morning
76°F 24°C
Sunny
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
83°F 28°C
Sunny
Warm and summery around 88°F 31°C (feels like 94°F 35°C), sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the S to the SSW at 9 mph 15 km/h.
Friday, September 18, 2026
Mid-Morning
64°F 18°C
Overcast
Mid-Afternoon
57°F 14°C
Light Showers
Early-Evening
57°F 14°C
Light Showers
Chilly near 57°F 14°C, clouds and showers taking over for the afternoon and evening, with steady humidity and steady pressure. Winds shifting from the SW to the WSW at 13 mph 20 km/h. Gusts up to 33 mph 53 km/h.
Saturday, September 19, 2026
Mid-Morning
47°F 9°C
Overcast
Mid-Afternoon
54°F 12°C
Overcast
Early-Evening
50°F 10°C
Overcast
Crisp with a high near 54°F 12°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds turning from the ESE to the NE at 8 mph 13 km/h.
Sunday, September 20, 2026
Mid-Morning
49°F 9°C
Sunny
Mid-Afternoon
58°F 15°C
Sunny
Early-Evening
53°F 12°C
Sunny
Refreshing around 58°F 15°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling.
Monday, September 21, 2026
Mid-Morning
52°F 11°C
Sunny
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
59°F 15°C
Sunny
Mildly cool near 64°F 18°C, sunny throughout the day, with steady humidity and steady pressure.
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