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Red Bud, IL Weather Forecast


Red Bud, IL Weather Forecast Dated: 1227 AM Wed Sep 16 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate. Isolated storms at times.
Wednesday, September 16, 2026
Mid-Morning
79°F 26°C
Sunny
Mid-Afternoon
98°F 37°C
Cloudy
Early-Evening
89°F 32°C
Sunny
Sizzling hot near 98°F 37°C with a heat index reaching 102°F 39°C, sunny in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
85°F 29°C
Sunny
Mid-Afternoon
100°F 38°C
Partly Cloudy
Early-Evening
91°F 32°C
Partly Cloudy
Sweltering temperatures near 100°F 38°C with a heat index of 103°F 39°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the W to the WNW at 8 mph 13 km/h.
Friday, September 18, 2026
Mid-Morning
80°F 27°C
Light Showers
Mid-Afternoon
100°F 38°C
Overcast
Early-Evening
85°F 30°C
Scattered Showers
Dangerously hot with a high of 100°F 38°C (heat index near 103°F 40°C), locally heavy downpours at times, with steady humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
84°F 29°C
Overcast
Mid-Afternoon
101°F 38°C
Overcast
Early-Evening
94°F 35°C
Overcast
Dangerously hot with a high of 101°F 38°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds switching from the WSW to the SSW at 8 mph 13 km/h.
Sunday, September 20, 2026
Mid-Morning
86°F 30°C
Cloudy
Mid-Afternoon
100°F 38°C
Sunny
Early-Evening
95°F 35°C
Sunny
Scorching hot near 100°F 38°C, partly cloudy in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds moving from the W to the SSW at 6 mph 10 km/h.
Monday, September 21, 2026
Mid-Morning
78°F 26°C
Overcast
Mid-Afternoon
92°F 34°C
Cloudy
Early-Evening
86°F 30°C
Overcast
Very hot with temperatures reaching 92°F 34°C, overcast through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds swinging from the SW to the ESE at 9 mph 14 km/h.
Tuesday, September 22, 2026
Mid-Morning
73°F 23°C
Overcast
Mid-Afternoon
91°F 33°C
Overcast
Early-Evening
85°F 29°C
Overcast
Hot and sweltering around 91°F 33°C, overcast throughout the day, with lower humidity and steady pressure. Winds shifting from the ENE to the ESE at 8 mph 13 km/h.
Wednesday, September 23, 2026
Mid-Morning
80°F 27°C
Cloudy
Mid-Afternoon
89°F 32°C
Cloudy
Early-Evening
81°F 27°C
Light Showers
Quite warm reaching 89°F 32°C, feeling like 92°F 33°C during peak afternoon, mainly dry until evening showers arrive, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds turning from the SSE to the SE at 5 mph 9 km/h.
Thursday, September 24, 2026
Mid-Morning
73°F 23°C
Light Showers
Mid-Afternoon
74°F 23°C
Scattered Showers
Early-Evening
68°F 20°C
Scattered Showers
Mild temperatures up to 74°F 23°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds switching from the SW to the W at 10 mph 16 km/h.
Friday, September 25, 2026
Mid-Morning
62°F 17°C
Light Fog
Mid-Afternoon
75°F 24°C
Partly Cloudy
Early-Evening
70°F 21°C
Scattered Showers
Mild with a high of 75°F 24°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the WNW to the SW at 9 mph 14 km/h.
Saturday, September 26, 2026
Mid-Morning
67°F 20°C
Light Fog
Mid-Afternoon
80°F 27°C
Sunny
Early-Evening
72°F 22°C
Sunny
Warm and summery near 80°F 27°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds swinging from the NNW to the NNE at 10 mph 16 km/h. Gusts up to 20 mph 32 km/h.
Sunday, September 27, 2026
Mid-Morning
60°F 16°C
Partly Cloudy
Mid-Afternoon
67°F 20°C
Partly Cloudy
Early-Evening
62°F 17°C
Scattered Showers
Cool with a high near 67°F 20°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds shifting from the NNW to the NE at 7 mph 11 km/h.
Monday, September 28, 2026
Mid-Morning
56°F 14°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
61°F 16°C
Sunny
Enjoyable around 69°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the NE to the ENE at 6 mph 10 km/h.
Tuesday, September 29, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
70°F 21°C
Overcast
Early-Evening
63°F 17°C
Overcast
Mild temperatures up to 70°F 21°C, cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds switching from the SE to the NE at 7 mph 11 km/h.
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