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


Bluff Lake, IL Weather Forecast Dated: 237 AM Mon Sep 14 2026
Expect a very warm period with plenty of sunshine and mostly dry weather over the coming period. moderate humidity and a stable pattern will dominate.
Monday, September 14, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
81°F 27°C
Cloudy
Warm and summery near 87°F 31°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the ENE to the E at 9 mph 14 km/h.
Tuesday, September 15, 2026
Mid-Morning
81°F 27°C
Sunny
Mid-Afternoon
100°F 38°C
Sunny
Early-Evening
92°F 33°C
Sunny
Sweltering heat reaching 100°F 38°C, sunny throughout the day, with lower humidity and steady pressure. Winds switching from the SSW to the SSE at 8 mph 12 km/h.
Wednesday, September 16, 2026
Mid-Morning
83°F 29°C
Sunny
Mid-Afternoon
101°F 38°C
Cloudy
Early-Evening
90°F 32°C
Partly Cloudy
Dangerously hot temperatures around 101°F 38°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the SSW to the N at 11 mph 19 km/h. Gusts up to 20 mph 31 km/h.
Thursday, September 17, 2026
Mid-Morning
78°F 25°C
Sunny
Mid-Afternoon
91°F 33°C
Partly Cloudy
Early-Evening
84°F 29°C
Cloudy
Sizzling hot near 91°F 33°C with a heat index reaching 94°F 35°C, sunny in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the N to the WNW at 7 mph 11 km/h.
Friday, September 18, 2026
Mid-Morning
80°F 27°C
Sunny
Mid-Afternoon
88°F 31°C
Partly Cloudy
Early-Evening
82°F 28°C
Sunny
Very warm with a high of 88°F 31°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds shifting from the E to the ENE at 8 mph 12 km/h.
Saturday, September 19, 2026
Mid-Morning
78°F 25°C
Sunny
Mid-Afternoon
96°F 35°C
Sunny
Early-Evening
80°F 27°C
Overcast
Very hot with temperatures reaching 96°F 35°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds increasing from the S at 7 mph 12 km/h to NW at 15 mph 24 km/h. Gusts up to 26 mph 42 km/h.
Sunday, September 20, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
67°F 19°C
Overcast
Early-Evening
65°F 18°C
Scattered Showers
Comfortable at 67°F 19°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure rising. Winds switching from the WNW to the NNE at 14 mph 23 km/h. Gusts up to 26 mph 41 km/h.
Monday, September 21, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
65°F 19°C
Sunny
Enjoyable around 74°F 23°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the NNE to the NE at 8 mph 13 km/h.
Tuesday, September 22, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
67°F 20°C
Sunny
Mild temperatures up to 77°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds swinging from the NNE to the NE at 6 mph 10 km/h.
Wednesday, September 23, 2026
Mid-Morning
61°F 16°C
Cloudy
Mid-Afternoon
77°F 25°C
Overcast
Early-Evening
69°F 20°C
Overcast
Mild with a high of 77°F 25°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds shifting from the NNE to the NE at 7 mph 10 km/h.
Thursday, September 24, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
69°F 21°C
Sunny
Pleasant near 79°F 26°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the ENE to the E at 7 mph 11 km/h.
Friday, September 25, 2026
Mid-Morning
65°F 18°C
Overcast
Mid-Afternoon
78°F 26°C
Overcast
Early-Evening
70°F 21°C
Cloudy
Comfortable with temperatures reaching 78°F 26°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
76°F 25°C
Sunny
Quite warm around 86°F 30°C, sunny throughout the day, with lower humidity and steady pressure.
Sunday, September 27, 2026
Mid-Morning
74°F 24°C
Sunny
Mid-Afternoon
92°F 33°C
Sunny
Early-Evening
81°F 28°C
Sunny
Hot temperatures near 92°F 33°C, sunny throughout the day, with steady humidity and steady pressure.
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