Windfall Lake, IL 14 Day Weather
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Windfall Lake, IL Weather Forecast


Windfall Lake, IL Weather Forecast Dated: 446 AM Tue Sep 08 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.
Tuesday, September 8, 2026
Mid-Morning
73°F 23°C
Overcast
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
78°F 26°C
Cloudy
Warm and summery near 83°F 28°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and steady pressure.
Wednesday, September 9, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
83°F 28°C
Cloudy
Early-Evening
78°F 25°C
Partly Cloudy
Quite warm reaching 83°F 28°C, feeling like 87°F 31°C during peak afternoon, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with increasing humidity and steady pressure. Winds turning from the SSW to the W at 4 mph 7 km/h.
Thursday, September 10, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
76°F 24°C
Light Showers
Early-Evening
72°F 22°C
Light Showers
Enjoyable around 76°F 24°C, dry early, with showers continuing through afternoon and evening, with steady humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
81°F 27°C
Overcast
Early-Evening
76°F 25°C
Sunny
Warm temperatures up to 81°F 27°C, sunny in the morning, overcast in the afternoon, and sunny this evening, with steady humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
72°F 22°C
Overcast
Mid-Afternoon
85°F 30°C
Sunny
Early-Evening
81°F 27°C
Sunny
Quite warm reaching 85°F 30°C, feeling like 90°F 32°C during peak afternoon, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the SSW to the E at 6 mph 10 km/h.
Sunday, September 13, 2026
Mid-Morning
74°F 23°C
Overcast
Mid-Afternoon
90°F 32°C
Cloudy
Early-Evening
85°F 29°C
Cloudy
Very hot with a high of 90°F 32°C, feeling closer to 97°F 36°C in the humidity, overcast in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds moving from the S to the SSE at 10 mph 16 km/h. Gusts up to 21 mph 34 km/h.
Monday, September 14, 2026
Mid-Morning
80°F 27°C
Sunny
Mid-Afternoon
91°F 33°C
Sunny
Early-Evening
81°F 28°C
Sunny
Sizzling hot near 91°F 33°C with a heat index reaching 98°F 37°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds out of the SSW at 11 mph 18 km/h. Gusts up to 24 mph 39 km/h.
Tuesday, September 15, 2026
Mid-Morning
60°F 16°C
Light Showers
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
58°F 15°C
Sunny
Cool with a high near 63°F 17°C, scattered morning showers before drying out later, with lower humidity and steady pressure. Winds shifting from the NW to the NNW at 12 mph 18 km/h. Gusts up to 22 mph 35 km/h.
Wednesday, September 16, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
62°F 17°C
Cloudy
Early-Evening
57°F 14°C
Sunny
Refreshing around 62°F 17°C, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds turning from the NNW to the SE at 8 mph 12 km/h.
Thursday, September 17, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
61°F 16°C
Sunny
Mildly cool near 66°F 19°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling.
Friday, September 18, 2026
Mid-Morning
63°F 17°C
Overcast
Mid-Afternoon
74°F 23°C
Overcast
Early-Evening
70°F 21°C
Overcast
Pleasant near 74°F 23°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds switching from the S to the ENE at 5 mph 7 km/h.
Saturday, September 19, 2026
Mid-Morning
57°F 14°C
Light Showers
Mid-Afternoon
59°F 15°C
Scattered Showers
Early-Evening
56°F 13°C
Scattered Showers
Cool with a high near 59°F 15°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds moving from the NNW to the NNE at 12 mph 19 km/h. Gusts up to 22 mph 35 km/h.
Sunday, September 20, 2026
Mid-Morning
51°F 10°C
Sunny
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
56°F 13°C
Sunny
Refreshing around 61°F 16°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds ENE at 7 mph 12 km/h.
Monday, September 21, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
60°F 16°C
Sunny
Mildly cool near 65°F 19°C, sunny throughout the day, with steady humidity and steady pressure.
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