Smith Lake, IL 14 Day Weather
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Smith Lake, IL Weather Forecast


Smith Lake, IL Weather Forecast Dated: 1254 AM Fri Sep 11 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Friday, September 11, 2026
Mid-Morning
68°F 20°C
Partly Cloudy
Mid-Afternoon
81°F 27°C
Partly Cloudy
Early-Evening
76°F 25°C
Partly Cloudy
Warm and summery near 81°F 27°C, partly cloudy throughout the day, with lower humidity and barometric pressure falling.
Saturday, September 12, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
89°F 32°C
Partly Cloudy
Early-Evening
81°F 27°C
Overcast
Balmy with temperatures reaching 89°F 32°C, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds turning from the SW to the SE at 8 mph 13 km/h.
Sunday, September 13, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
85°F 29°C
Overcast
Early-Evening
76°F 25°C
Overcast
Very warm near 85°F 29°C, though humidity makes it feel like 88°F 31°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds blowing from the N at 11 mph 18 km/h. Gusts up to 20 mph 32 km/h.
Monday, September 14, 2026
Mid-Morning
78°F 25°C
Sunny
Mid-Afternoon
95°F 35°C
Sunny
Early-Evening
91°F 33°C
Overcast
Sizzling hot near 95°F 35°C with a heat index reaching 98°F 36°C, sunny through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds SSW at 14 mph 22 km/h. Gusts up to 24 mph 38 km/h.
Tuesday, September 15, 2026
Mid-Morning
81°F 27°C
Cloudy
Mid-Afternoon
84°F 29°C
Overcast
Early-Evening
78°F 25°C
Scattered Showers
Quite warm reaching 84°F 29°C, feeling like 88°F 31°C during peak afternoon, scattered downpours possible, with increasing humidity and barometric pressure rising. Winds swinging from the SW to the NNE at 11 mph 18 km/h. Gusts up to 20 mph 32 km/h.
Wednesday, September 16, 2026
Mid-Morning
70°F 21°C
Light Showers
Mid-Afternoon
71°F 22°C
Light Showers
Early-Evening
68°F 20°C
Scattered Showers
Pleasant near 71°F 22°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds blowing from the NE at 9 mph 14 km/h.
Thursday, September 17, 2026
Mid-Morning
62°F 17°C
Overcast
Mid-Afternoon
74°F 23°C
Overcast
Early-Evening
66°F 19°C
Sunny
Comfortable with temperatures reaching 74°F 23°C, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds turning from the NE to the ENE at 9 mph 14 km/h.
Friday, September 18, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
68°F 20°C
Overcast
Enjoyable around 75°F 24°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds out of the ENE at 7 mph 12 km/h.
Saturday, September 19, 2026
Mid-Morning
63°F 17°C
Overcast
Mid-Afternoon
77°F 25°C
Overcast
Early-Evening
70°F 21°C
Overcast
Mild temperatures up to 77°F 25°C, overcast throughout the day, with steady humidity and steady pressure.
Sunday, September 20, 2026
Mid-Morning
65°F 18°C
Overcast
Mid-Afternoon
77°F 25°C
Overcast
Early-Evening
70°F 21°C
Overcast
Mild with a high of 77°F 25°C, overcast throughout the day, with steady humidity and steady pressure. Winds moving from the ENE to the E at 8 mph 14 km/h.
Monday, September 21, 2026
Mid-Morning
68°F 20°C
Scattered Showers
Mid-Afternoon
70°F 21°C
Scattered Showers
Early-Evening
67°F 20°C
Light Showers
Pleasant near 70°F 21°C, scattered downpours possible, with increasing humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
66°F 19°C
Fog
Mid-Afternoon
82°F 28°C
Partly Cloudy
Early-Evening
71°F 22°C
Sunny
Balmy with temperatures reaching 82°F 28°C, partly cloudy through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds swinging from the SW to the WNW at 9 mph 14 km/h.
Wednesday, September 23, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
61°F 16°C
Overcast
Refreshing around 64°F 18°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds shifting from the NNW to the NNE at 11 mph 17 km/h.
Thursday, September 24, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
59°F 15°C
Sunny
Mild temperatures up to 69°F 21°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the NNE to the NE at 9 mph 14 km/h.
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