Upper Bluff Lake, IL 14 Day Weather
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Upper Bluff Lake, IL Weather Forecast


Upper Bluff Lake, IL Weather Forecast Dated: 301 AM Sat Sep 19 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.
Saturday, September 19, 2026
Mid-Morning
81°F 27°C
Sunny
Mid-Afternoon
99°F 37°C
Cloudy
Early-Evening
91°F 33°C
Overcast
Very hot with temperatures reaching 99°F 37°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds turning from the WSW to the NNW at 4 mph 7 km/h.
Sunday, September 20, 2026
Mid-Morning
83°F 28°C
Cloudy
Mid-Afternoon
94°F 34°C
Overcast
Early-Evening
88°F 31°C
Overcast
Hot and sweltering around 94°F 34°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds switching from the WSW to the SSE at 3 mph 5 km/h.
Monday, September 21, 2026
Mid-Morning
74°F 24°C
Cloudy
Mid-Afternoon
91°F 33°C
Nearby Thunderstorms
Early-Evening
77°F 25°C
Light Showers
Sizzling hot with 91°F 33°C, heavy thunderstorms conditions at times, with steady humidity and steady pressure. Winds moving from the NNW to the NNE at 4 mph 7 km/h.
Tuesday, September 22, 2026
Mid-Morning
66°F 19°C
Cloudy
Mid-Afternoon
80°F 27°C
Sunny
Early-Evening
67°F 19°C
Sunny
Warm temperatures up to 80°F 27°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the NNW to the N at 12 mph 19 km/h.
Wednesday, September 23, 2026
Mid-Morning
61°F 16°C
Partly Cloudy
Mid-Afternoon
75°F 24°C
Partly Cloudy
Early-Evening
69°F 21°C
Cloudy
Mild with a high of 75°F 24°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds shifting from the N to the SE at 9 mph 15 km/h.
Thursday, September 24, 2026
Mid-Morning
61°F 16°C
Light Fog
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
66°F 19°C
Overcast
Pleasant near 72°F 22°C, overcast throughout the day, with lower humidity and steady pressure. Winds NNE at 11 mph 18 km/h.
Friday, September 25, 2026
Mid-Morning
62°F 16°C
Overcast
Mid-Afternoon
73°F 23°C
Overcast
Early-Evening
66°F 19°C
Overcast
Comfortable with temperatures reaching 73°F 23°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the NNE to the NE at 7 mph 12 km/h.
Saturday, September 26, 2026
Mid-Morning
63°F 17°C
Light Fog
Mid-Afternoon
78°F 26°C
Sunny
Early-Evening
71°F 21°C
Cloudy
Enjoyable around 78°F 26°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds moving from the NE to the ENE at 7 mph 11 km/h.
Sunday, September 27, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
74°F 24°C
Sunny
Warm temperatures up to 83°F 28°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling.
Monday, September 28, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
87°F 30°C
Sunny
Early-Evening
78°F 25°C
Sunny
Very warm with a high of 87°F 30°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling.
Tuesday, September 29, 2026
Mid-Morning
67°F 20°C
Overcast
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
64°F 18°C
Overcast
Pleasant near 72°F 22°C, overcast throughout the day, with increasing humidity and steady pressure.
Wednesday, September 30, 2026
Mid-Morning
61°F 16°C
Fog
Mid-Afternoon
68°F 20°C
Scattered Showers
Early-Evening
65°F 19°C
Overcast
Comfortable with temperatures reaching 68°F 20°C, locally heavy downpours at times, with lower humidity and steady pressure.
Thursday, October 1, 2026
Mid-Morning
64°F 18°C
Cloudy
Mid-Afternoon
74°F 23°C
Cloudy
Early-Evening
69°F 21°C
Overcast
Enjoyable around 74°F 23°C, overcast throughout the day, with lower humidity and steady pressure.
Friday, October 2, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
65°F 19°C
Cloudy
Mild temperatures up to 73°F 23°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the NNE to the SE at 9 mph 15 km/h.
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