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Flag Center, IL Weather Forecast
Flag Center, IL Weather Forecast Dated: 332 PM Sat Sep 12 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.
Saturday, September 12, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
85°F 29°C
Partly Cloudy
Early-Evening
72°F 23°C
Sunny
Warm and summery around 85°F 29°C (feels like 89°F 32°C), sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds turning from the SW to the NW at 10 mph 16 km/h.
Sunday, September 13, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
70°F 21°C
Scattered Showers
Early-Evening
62°F 16°C
Partly Cloudy
Comfortable with temperatures reaching 70°F 21°C, scattered downpours possible, with increasing humidity and steady pressure. Winds switching from the N to the NNE at 7 mph 10 km/h.
Monday, September 14, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
65°F 19°C
Sunny
Comfortable at 64°F 18°C, sunny in the morning, overcast in the afternoon, and sunny this evening, with steady humidity and barometric pressure falling. Winds moving from the ESE to the SSE at 14 mph 23 km/h. Gusts up to 31 mph 50 km/h.
Tuesday, September 15, 2026
Mid-Morning
70°F 21°C
Light Showers
Mid-Afternoon
81°F 27°C
Overcast
Early-Evening
75°F 24°C
Overcast
Warm and summery around 81°F 27°C (feels like 85°F 29°C), early showers breaking for a drier afternoon, with steady humidity and steady pressure. Winds swinging from the SSW to the N at 3 mph 6 km/h.
Wednesday, September 16, 2026
Mid-Morning
67°F 19°C
Light Showers
Mid-Afternoon
62°F 17°C
Scattered Showers
Early-Evening
59°F 15°C
Light Showers
Refreshing around 62°F 17°C, scattered downpours possible, with steady humidity and steady pressure. Winds blowing from the ENE at 7 mph 12 km/h.
Thursday, September 17, 2026
Mid-Morning
61°F 16°C
Fog
Mid-Afternoon
64°F 18°C
Light Showers
Early-Evening
69°F 21°C
Light Showers
Mildly cool near 64°F 18°C, dry early, with showers continuing through afternoon and evening, with lower humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
73°F 23°C
Scattered Showers
Mid-Afternoon
78°F 26°C
Partly Cloudy
Early-Evening
67°F 20°C
Light Showers
Comfortable with temperatures reaching 78°F 26°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds turning from the WNW to the ENE at 10 mph 15 km/h.
Saturday, September 19, 2026
Mid-Morning
58°F 15°C
Light Showers
Mid-Afternoon
60°F 16°C
Scattered Showers
Early-Evening
59°F 15°C
Scattered Showers
Cool with a high near 60°F 16°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds switching from the N to the NNE at 12 mph 18 km/h. Gusts up to 26 mph 42 km/h.
Sunday, September 20, 2026
Mid-Morning
59°F 15°C
Light Fog
Mid-Afternoon
68°F 20°C
Scattered Showers
Early-Evening
62°F 17°C
Partly Cloudy
Mild temperatures up to 68°F 20°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the NE to the ENE at 8 mph 13 km/h.
Monday, September 21, 2026
Mid-Morning
58°F 14°C
Sunny
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
61°F 16°C
Sunny
Mildly cool near 67°F 19°C, sunny throughout the day, with steady humidity and barometric pressure falling.
Tuesday, September 22, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
65°F 19°C
Partly Cloudy
Pleasant near 70°F 21°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and barometric pressure falling. Winds SSW at 13 mph 21 km/h. Gusts up to 22 mph 36 km/h.
Wednesday, September 23, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
62°F 17°C
Sunny
Comfortable with temperatures reaching 69°F 21°C, sunny throughout the day, with steady humidity and steady pressure. Winds out of the WNW at 17 mph 27 km/h. Gusts up to 30 mph 48 km/h.
Thursday, September 24, 2026
Mid-Morning
48°F 9°C
Sunny
Mid-Afternoon
60°F 16°C
Partly Cloudy
Early-Evening
56°F 14°C
Cloudy
Refreshing around 60°F 16°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds turning from the NNW to the SE at 5 mph 8 km/h.
Friday, September 25, 2026
Mid-Morning
58°F 15°C
Scattered Showers
Mid-Afternoon
78°F 26°C
Overcast
Early-Evening
70°F 22°C
Overcast
Mild temperatures up to 78°F 26°C, scattered downpours possible, with increasing humidity and steady pressure. Winds switching from the S to the NW at 11 mph 17 km/h. Gusts up to 25 mph 39 km/h.
Flag Center, IL Weather Radar Map
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